baber/WOPTO huggingface dataset:
Patent GB-1489839-A (GB)
Title: Purification of 3alpha,7alpha-dihydroxy-5beta-cholanic acid
IPC: A61K31/575
Filed: 1975-05-07
Abstract: 1489839 Chenodeoxycholic acid INTELLECTUAL PROPERTY DEVELOPMENT CORP 7 May 1975 [7 May 1974] 19262/75 Heading C2U Chenodeoxycholic acid is treated to remove entrapped organic solvent of crystallization, e.g. by (i) dissolution in aqueous alkali and precipitation with acid; or (ii) dissolution in an alcohol and evaporation to dryness; or (iii) drying under vacuum at elevated temperature (e.g. 85-100‹ C./2 mm. Hg). The product has a m.p. of 142-145‹ C. The initial chenodeoxycholic acid is isolated from bile, purified and converted to solvates with ethyl acetate, hexane, heptane and C 5-7  cycloalkanes as described in Specifications 1,450,939 and 1,489,840. Oral compositions for dissolution of cholesterol gallstones comprise chenodeoxycholic acid treated as above and a carrier.
Patent GB-1084013-A (GB)
Title: Improvements relating to electric storage cells
Inventor: LUNN HAROLD BRITNOR
IPC: H01M10/34
Filed: 1964-05-08
Abstract: 1,084,013. Electric cells. CHLORIDE OVERSEAS Ltd. May 7, 1965 [May 8, 1964], No. 19296/64. Heading H1B. An alkaline button cell has a vent 17 sealed by a resilient pad 18 the latter being retained by a cap 16 fitting over the end wall of the cell.
Patent GB-1170143-A (GB)
Title: Protective and Air-Flow Directing Grill.
IPC: F24F13/08
Filed: 1967-04-26
Abstract: 1,170,143. Radiator grilles. FARR CO. 26 April, 1967 [11 May, 1966], No. 19332/67. Heading F4S. A protective grille secured to the front of a radiator comprises streamlined vanes 24 which are roll formed from sheet metal and mounted vertically, horizontally or at an angle on a frame. Lateral reinforcing rods e.g. 25a, are welded to the semi-circular nose portions 28 of the vanes and to inturned flanges of the frame. The dimensions of the vanes and their spacing are described.
Patent GB-1410000-A (GB)
Title: Handles for domestic appliances
IPC: B25G3/00
Filed: 1974-05-02
Abstract: 1410000 Hand tool handles ROMAN DIETSCHE KG 2 May 1974 [14 June 1973] 19343/74 Heading B4K A handle for an appliance such as a brush, carpet sweeper or garden appliance comprises a tube 1, an insert 5 adapted to be inserted in the end of the tube, the insert having resilient gripping fingers 8a, 8b within the tube, an annular groove 14 for receiving the tube end and a projecting conical screwed portion, and a pin 6 which can be driven into the bore of the insert to cause engagement with the tube. The screwed end portion of the insert is screwed into a mating frusto-conical recess in a housing 11 of the appliance the recess being screw-threaded over only the inner portion. The tube 1 may be of aluminium and the insert 5 and pin 6 of plastics material.
Patent GB-951857-A (GB)
Title: Method and apparatus for making knives of undulatory contour
Inventor: CARDINET GUY
IPC: B21D53/64
Filed: 1962-05-21
Abstract: 951,857. Making machine knives; shearing. GILLETTE FRANCE S.A. May 21, 1962, No. 19459/62. Headings B3A and B3W. A method of making machine knives for cutting undulating strips of paper and the like, comprises the steps of reducing the diameter of a flat metal ring by bending it flatwise in alternate directions to approximate the final shape of the knife, thereafter imparting final shape to the ring by clamping it between cylindrical dies, and then, when so clamped, shearing its margin to coincide with the circumference of the cylindrical dies. A tool for pre-forming the blade, Fig. 1, comprises concentric sleeves 1 and 2 which have projecting pins 4 and 5. Axial relative movement of the sleeves bends the ring to the rough shape of the knife. The finishing tool, Fig. 3, comprises a pair of forming dies 6 and 7 which press the knife to its final shape and then clamp it while the edges are sheared by dies 8 and 9, which slide on the inner and outer faces of the forming dies. The dies 8 and 9 move axially against compression springs 13. The ring is located radially by a spring-loaded ring 14 which is depressed by the dies 8 and 9 since the springs 13 are stronger than the springs 16. The heat treatment of the knife is advantageously carried out while the knife is securely held in its final form.
Patent GB-1502911-A (GB)
Title: Low friction means for sewing machine work clamp
IPC: D05B3/08
Filed: 1975-05-09
Abstract: 1502911 Sewing machines feed by clamps SINGER CO 9 May 1975 [4 Oct 1974] 19529/75 Heading DIG To facilitate movement by cam 40 of a work clamp comprising an arched frame 30 and work clamping members 46, 56 a ball bearing 85, between the lower clamp member 56 and the bed 16, 17 of the sewing machine 10. is raised in synchronism with the raising of the needle 24. A ball bearing 97 is also provided between the frame 30 and a race plate 95 below the machine arm 11. The balls 90, 100 are received in plastics (PTFE) sockets and bearing units 85 are moved upwards and downwards by linkages (66-83 Fig. 2 not shown) driven by a crank on the end of a shaft 60 driven at the speed of arm shaft 20. The linkages include levers (70) pivoted on eccentric pivots (74) which are rotatable to adjust the height to which the balls 90 rise.
Patent GB-481553-A (GB)
Title: Improvements in and relating to automatic couplers for railway or like vehicles
IPC: B61G1/32
Filed: 1937-07-14
Abstract: 481,553. Railway - vehicle couplings. UNION-KUPPLUNG AKT.-GES. July 14, 1937, No. 19559. Convention date, Aug. 14, 1936. Addition to 446,907. [Class 103 (v)] The invention claimed in the parent Specification is-modified in that, on each coupler head, the buffing or impact surfaces, of which at least two are provided as shown at 8, 9, Fig. 1, and the nose surfacce 41 of the locking-bolt 19 lie substantially in the medial transverse plane Q, Q of the head, while the centres of pressure S<1>, S<2>, Fig. 3, of the surfaces 8, 9 lie substantially in the vertical medial longitudinal plane of the head, but displaced from the longitudinal axis T. Instead of arranging only two impact surfaces 8, 9 as shown, the surface 9 may be replaced by two surfaces 9<1>, 911 as indicated in dotted lines, Fig. 1, one surface being slightly in advance of the plane Q, Q and the other to the rear thereof. The surface 8 may be formed as a bridge connecting the guiding horns 3, 3<1>, and to the rear thereof is located a recess'M in which dirt &c. may be collected, thereby preventing its accumulation on the machined surfaces 8, 9, 12, 12<1>, 13, 13<1>. The bolt 19 may be operated for uncoupling by means of a two-part lever 32, 32<1>, to which the bolt is connected at 31 and which pivots about the point of contact with the head of a projection 33 on the lever 32. For suspending the coupler-head on the draw-hook 21, a yoke 20 is provided the limbs of which terminate in slides 23 engaging grooves 24 in wings 25, 25<1> on the head, the wing 251, if desired, being pivoted on a rupturable bolt 28. In a modification, means including a universal joint are described for supporting the coupler-head in a lower position in relation to the hook.
Patent GB-459720-A (GB)
Title: Improvements in the manufacture and production of polymerisation products
IPC: C08F212/10
Filed: 1935-07-09
Abstract: Interpolymers are prepared by polymerizing styrene with from 0,5 to 5 per cent of acrylic or methacrylic nitrile, with or without accelerators such as benzoyl peroxide, preferably in aqueous emulsion in the presence of wetting or dispersing agents or of protective colloids.  In examples, styrene with (1) 5 per cent; (2) 3 per cent of acrylic nitrile is boiled till solid, then heated at 200 DEG  C. for 24 hours; (3) styrene with 2 per cent of acrylic nitrile is dispersed in an aqueous solution of sodium a -hydroxy-octadecanesulphonate, hydrogen peroxide is added; the whole is heated at 60 DEG  C., and the polymer is precipitated by sodium chloride or aluminium sulphate, filtered off, washed, and dried. Specification 358,534 is referred to.  The Provisional Specification describes also the use of larger amounts of nitriles, up to 20 per cent in the case of acrylic nitrile.
Patent GB-475287-A (GB)
Title: Improvements in alternating-current voltmeters
IPC: G01R17/00
Filed: 1936-07-16
Abstract: 475,287. Current and volt meters ; compensating instruments for tempera-. ture errors. TURNER, L. B. July 16, 1936, No. 19705. [Class 37] A voltmeter for reading small variations from a relatively large alternating-current voltage, for example the small departures from standard mains voltages, comprises a resistance bridge network including non-ohmic resistors, and a meter with a protective device therefor across one diagonal. The bridge comprises resistors R1, R2 of constantan and lamps L1, L2 preferably with straight filaments, the instrument M being protected by a transformer T and neon tube N. The neon tube strikes when the transformer primary voltage exceeds slightly the full scale voltage of the instrument. A series or parallel condenser C3 or other impedance element, is arranged to shield the instrument from unbalanced reactance effects in the bridge arms, further condensers C1, C2 being provided in the arms for this purpose. If R.M.S. values are required the harmonic currents are allowed to flow in the bridge arms. Small temperature variations in resistors R1, R2 are compensated for by resistors r1, r2 in the arms L1, L2, and wound in close thermal relationship with R1, R2. A switch P and resistor r3 are provided for indicating whether the bridge potential is above or below the balancing value. For indicating the potential applied across the bridge a calibrated resistor r4 is employed, or additional terminals A, B can be used.
Patent GB-220791-A (GB)
Title: Improvements in or relating to acid-proof alloys
IPC: C22C9/00
Filed: 1923-08-01
Abstract: 220,791. Dreifuss, M. Aug. 1, 1923. Alloys.-An alloy, particularly for use in making or coating vessels required to resist the action of acids and salts, consists of copper, aluminium, nickel, lead and iron, a suitable composition being 73-81.5 per cent of copper, 10-11 per cent of aluminium, 6-10 per cent of nickel, 2-5 per cent of lead, and 0.5-1 per-cent of iron.
Patent GB-958029-A (GB)
Title: Improvements in and relating to view finders
IPC: G02B23/14
Filed: 1960-06-03
Abstract: 958,029. Albada finders. VOIGTLANDER A.G. June 3,1960 [June 3, 1959], No. 19838/60. Headings G2A and G2J. A block form "Albada" finder for a photographic camera in which in addition to the bounding of the field, provision is made for the position of a part or parts in the camera of importance for taking a photograph for example the position of an exposure meter pointer, to be reflected into the finder field, is characterised in that on the side of the front lens of the finder an inclined reflector is provided which when the finder is positioned in the camera receives light rays from the said part or parts and so redirects these rays into the finder that the observer's eye sees an image of the said part or parts within the total field of the finder. As shown, the transparent front member 1 of a block form "Albada" finder-comprising in addition to the member 1 a transparent central block 2, a semi-reflecting spherical mirror surface 5 and a transparent rear member 3 supporting field bounding marks 4 which are imaged by the mirror 5 at infinity-carries an inclined mirror surface 6 which reflects an image 14 of a pointer 13 or the like into the finder field of view, said image 14 being further imaged by the curved surface 18 of the block 2 at infinity. The mirror 6 may be plane or have a spherical cylindrical or aspherical form for supplementing or modifying the action of the lens surface 18. The mirror 6 may also be formed separately from or integrally with the member 1. The block 2 may have a wedge shaped side extension to accommodate the light rays from the pointer (cf. Fig. 3, not shown). The magnification of the finder may be 1 : 1 or, if the members 1 and 3 are constructed as lenses (cf. Fig. 2 - not shown), other than 1 : 1. The members 1, 2 and 3 may be formed of glass or transparent synthetic material. In a further modification (Fig. 4) using synthetic material for the front member 61, the inclined mirror surface 67 is formed at the front of the member 61 thus allowing the surface 68 to be shaped-during moulding of the member 1- to any curvature desired. A protective plate 62 here overlies the member 61.
Patent GB-1514951-A (GB)
Title: Protective device for induction heating apparatus
IPC: H05B6/12
Filed: 1975-05-12
Abstract: 1514951 Induction heated hot plate MITSUBISHI DENKI KK 12 May 1975 [15 July 1974 6 March 1975] 19925/75 Heading H5H [Also in Division H2] The excitation device of an inductively heated cooker comprises a magnetic core element 2 on which are placed the exciting windings 3-6, the windings being connected electrically in pairs 3, 4 and 5, 6, the cooker being further provided with a protective device for detecting an abnormality in the cooking utensil and which comprises a magnetic core 41 on which is placed a detector winding 42. Alternatively the winding 42 may be placed on the core 2. (For figures see next column)
Patent GB-1305150-A (GB)
IPC: G01R17/00
Filed: 1971-06-10
Abstract: 1305150 Bridge networks; flash apparatus FRANKE & HEIDECKE GmbH [trading as ROLLEI-WERKE FRANKE & HEIDECKE] 10 June 1971 [2 July 1970 7 July 1970] 19960/71 Headings H2F and H2H A bridge network comprises resistors 9, 10, capacitors 1, 2 and a diagonal branch connected between points 11, 12 comprising a diac 14 in series with the primary 15 of a transformer, the series circuit being in parallel with a capacitor 13. In use as part of electronic flash apparatus, capacitors 1, 2 are of a storage type and are unidirectionally charged to a voltage ratio set by resistors 9, 10 by A.C. via S.C.R.'s 3, 4. In the event of e.g. leakage currents existing between the two capacitors such that the p.d. across each changes but that across terminals 7, 8 remains constant, the capacitor 13 is charged to the potential across points 11, 12 to cause diac 14 to conduct when this potential is sufficiently large. An impulse will be derived in the two secondaries 27, 28 of the transformer to gate one of the two S.C.R.'s 25, 26 to enable a respective capacitor 21, 22, previously charged via terminals 23, 24 to discharge, during which discharging period, gating pulses for S.C.R.'s 3, 4, at terminals 17, 18 are shunted away via the rectifier pair 19, 25, 20, 26. Upon capacitor 21 or 22 being discharged S.C.R. 25 or 26 will turn off and the charging potential will be reapplied to capacitors 1, 2. The duration of the removal of charging potential depends upon the time constant of the capacitor circuits 21, 22. In a further embodiment, Fig. 4 (not shown), the impulses from transformer secondary (7) are used to switch one of two relays (12), (13) to drive a motor (m) in one of two directions for a predetermined time to alter a mechanical constraint causing the imbalance.
Patent GB-459668-A (GB)
Title: Improvements in or relating to harmonic analysers
IPC: G06G7/19
Filed: 1935-07-12
Abstract: 459,668. Calculating - apparatus. WRIGHT, E. E., and BAIRD TELEVISION, Ltd., 58, Victoria Street, London. July 12, 1935, No. 20028. [Class 106 (i)] Harmonic analysers.-A method of effecting harmonic analysis of a junction comprises passing through a square-law electrical recording instrument a single current whose instantaneous value is the sum of the function to be analysed and a sinusoidal junction of appropriate frequency and phase, the periodic time of the current being substantially lower than the time of response of the instrument. If the function f(x) is to be analysed over a range - # to + #, then the amplitude of the nth sine component to be measured is given by An=1/# #<+#>-##(x)sin nxdx and the nth cosine component by Bn=1/##<+#>-##(x) cos nxdx. These values are determined by means of a glass cylinder 1 which carries an opaque template 2 cut to the shape of the graph of the function f(x) and a second template 3 cut to the shape of sin n x and movable around the transparent cylinder 1, so that a photo-electric cell 4 situated with the cylinder 1 and having a slitshaped aperture 5 may receive an amount of light, which at any instant as the cylinder 1 rotates uniformly is proportional to a quantity Q equal to {f(x)Œ sin nx} or { f(x) Œ cos nx} according to the position of the template 3. The cell 4 is in series with a battery 9 and a high resistance 7 forming the grid leak of a valve 8 operating as a square-law detector and having in its plate circuit a meter 10, the period of which is long compared with the time of rotation of the cylinder 1. The reading of the meter 10 is then proportional to the integral between the limits Œ # of the square of the quantity Q. By taking readings with the template 3 suitably adjusted, the quantities An, Bn can be found. By giving n any value, the function can be fully analysed. The instrument can be calibrated by using a known wave form and the current from the cell 4 may be amplified before passing through the squarelaw rectifier or the latter may be replaced by a thermo-couple operating a galvanometer or micro-ammeter. The invention may be applied to the solution of differential equations of a suitable type.
Patent GB-591127-A (GB)
Title: Improvements relating to joint boxes for electric cables
IPC: H02G15/10
Filed: 1945-08-03
Abstract: 591,127. Junction boxes. CANNING, R. B. Aug. 3, 1945, No. 20045. [Class 38 (i)] A junction box, particularly for high voltage cables, comprises a metal tube b adapted to be slid over the cable joint and fitted with end plates c, drawn against the tube ends by bolts o, the tube having a slot d preferably fitted with a weir e through which is poured sealing compound, the slot being closed by a plug f. The end plates are divided in two halves or may be in one piece with a slot enabling them to be slid over the cable from the side and have a transverse hole m communicating with a cavity n formed in the plates which is filled with fusible metal when the plates are in position so as to form a metallic seal round the cable sheath. The inner face of each plate embraces the cable sheath, the outer face being internally threaded to receive a metal bush p screwed up when the metal filling has set. The cable armouring s is clamped against the plates c by a ring q secured on the bolts o by nuts t. Sealing boxes v are fitted round the armouring clamps and end plates and filled with sealing compound.
Patent GB-219507-A (GB)
Title: Improvements in and relating to rubberized fabric, and method of making the same
IPC: D06B3/10
Filed: 1923-08-07
Abstract: 219,507. King, E. F. Aug. 7, 1923. W a t erproofing; proofing processes; single coatings.- A number of lengths of soft rubber encased in permeable textile sheaths are placed parallel and then subjected to heat and pressure. The melted rubber exudes through the sheaths and a rubber-coated material is produced having the structure shown in the Figure.
Patent GB-855824-A (GB)
Title: Improvements relating to machine tools
IPC: B23Q17/24
Filed: 1958-06-24
Abstract: 855,824. Gauging by optical means. SCHIESS A.G. June 24, 1958 [June 24, 1957], No. 20116/58. Class 106 (2). [Also in Group XXII] A vertical lathe &c. comprises a telescope 10, mounted on a slide 7 adjustable on the toolcarriage 2 to align the telescope with the edge of the tool 5, and an optical instrument 12 also mounted on the slide and spaced from the telescope to enable the diameter of the work to be measured against a stationary scale 13. The tool carriage 2 is movable on a cross-beam 1 and carries a vertically movable tool bar 3. The reading on the scale 13 is zero when the telescope 10 is over the centre of the lathe table. The position of the slide 7 can be checked by a spirit level 16. The telescope may carry a spotlight to illuminate the tool.
Patent GB-149666-A (GB)
Title: Improvements in wooden steering rudders for flying machines
IPC: B64C9/00
Filed: 1920-07-09
Abstract: 149,666. Deutsche Flugzeug-Werke Ges. Jan. 8, 1918, [Convention date]. Planes, construction of.-An aircraft rudder frame comprises a wooden bar a and ribs b of rectangular section glued to side-plates d of veneer, the curved edges of the sideplates being glued together and locked by screws or hollow rivets h. The sideplates may be cut away between the ribs as shown.
Patent GB-1141349-A (GB)
Title: Method and apparatus for pitting drupaceous fruit
Inventor: CANTONI JOHN DIONIS
IPC: A23N4/04
Filed: 1966-05-09
Abstract: 1,141,349. Removing stones from fruit. SUNSWEET GROWERS Inc. 9 May, 1966 [17 June, 1965], No. 20395/66. Heading A4C. An apparatus for removing stones from drupaceous fruit (e.g. prunes) comprises means for discriminating between fruit which have and have not had the stones completely removed and means for segregating the completely and incompletely stoned fruit. In the apparatus shown the prunes are delivered by an orienting and shaping conveyer to the gripping fingers 41 on turret 21, the prunes being treated as the turret rotates. Each prune 44 is subjected to compression heads 120 which align the stone 61 and cause it to puncture the skin. The prune is then acted upon by a piston 46 which forces the stone 61 completely (Fig. 12) or incompletely (Fig. 13) from the prune into a die 47. At this stage a probe 54 on the turret 21 is actuated by contact with a leaf spring 59 to move into engagement with the stone 61 in the die 47. If the stone is incompletely removed the collar 56 on probe 54 forces spring- loaded lever 89 downwards against the spring so that arm 89b on lever 89 engages face 105a of arm 105 mounted on shaft 101 to hold plate 65 mounted on shaft 101 in position 65a so that the incompletely stoned prune 44 propelled by a finger 66 is deflected into compartment 64 and thence to a conveyer. The finger 66 is mounted on a rotating plate 68 and is spring-loaded. The finger 66 is normally held biased against the spring by cam 80, but when the finger is in a propelling position it is flipped forward by the action of the spring. If the stone is completely removed the probe collar 56 does not actuate lever 89 and plate 65, the position of which is normally controlled by a cam 90, is in position 65c so that the prune is propelled into compartment 63 and thence to a conveyer. The completely removed stone 61 in cavity 47b of die 47 is then pushed out by further actuation of probe 54 and struck by rotating blade 118. Plate 65 may be V-shaped so that both the completely and incompletely stoned fruit are deflected on their way to their separate conveyers.