baber/WOPTO huggingface dataset:
Patent GB-730529-A (GB)
Title: Improvements in driving gear for two-stroke internal combustion engines
IPC: F02B75/02
Filed: 1953-09-08
Abstract: 730,529. Two-stroke engines ; driving gear. GUILLON, M. Sept. 8, 1953 [Sept. 15, 1952], No. 24785/53. Class 7(2). In a two-stroke engine with crankcase compression comprising two coaxial cylinders 3, 4 disposed one on each side of a crankshaft 2, and a piston 5, 6, respectively, in each cylinder, the pistons are interconnected by a plurality of rods 30 and only one of the pistons is connected to the crankshaft by a connecting rod 7. The four or six rods 30 are guided in bronze bushes 10, 13, and the two cylinders 3 and 4 are separated by the base 11 of the crankcase 1 ; a mixture of fuel /air /lubricating oil is drawn into the cylinders from a carburetter, not shown, through ports 21, 21<SP>1</SP> on the outstroke of each piston before being compressed by the underside thereof and admitted to the cylinders through transfer passages 14, 22, the latter having two inlet ports 18, 19 in the piston 6. The ignition is effected by sparking plugs 26, 26<SP>1</SP> and the burnt gases are forced out of the exhaust ports 20, 20<SP>1</SP> by the incoming mixture. The engine may operate with petrol or air injection and the lubricant may be supplied by a pump in the crankcase ; a fly wheel need not be provided.
Patent GB-1187769-A (GB)
Title: Improvements in or relating to Rolling Bearings and to Race Rings Therefor
IPC: F16C19/36
Filed: 1967-05-30
Abstract: 1,187,769. Bearings. SKF KUGELLAGERFABRIKEN G.m.b.H. 30 May, 1967 [2 June, 1966], No. 24908/67. Heading F2A. A race ring of a roller bearing has an internal conical surface with a circumferentially-extending groove therein, the groove being adjacent the larger diameter end of the internal, conical surface and the raceway lying between said groove and the smaller diameter end of said internal conical surface. In an embodiment a flange-ring 10, Fig. 1, has one limb 11 received by a groove 8 in an internal conical surface 4 of an outer race 3 and has another limb 12 in contact with the surface 4. An additional groove 7 is provided in the internal conical surface 4 and is adjacent the smaller diameter end thereof; a flange-ring 9 having a limb 11 received in the groove 7 and a limb 12 in contact with the surface 4. The outer race 3 and an inner race 1 have rollers 5 therebetween; the rollers 5 are abutted by the flange-rings 9, 10; and a cage 6 is provided. In a modification, a flange-ring 16, Fig. 3, is substantially T- shaped. A stem of the flange-ring 16 is received by a groove 17 formed in an internal conical surface 20 of an outer race 18; a limb 19 contacts the surface 20; and another limb extends towards the larger diameter end of the internal Conical surface 20 and is spaced from the surface 20. The flange-ring 16 is retained in the groove 17 by means an annular deformable element 22 which is inserted as a tapered-ring into the space between the limb of the flange-ring 16 and the surface 20 and is then driven into position, a surface 15 on the flangering 16 facilitating the flaring-outward deformation of the element 22. In another modification, the larger diameter end of an internal conical surface 20, Fig. 4, of an outer race 18 is provided with a cylindrical bore 25. A groove 27 is formed in the bore 25 and receives a retaining element 30 therein.
Patent GB-407620-A (GB)
Title: Improvements in screw thread cutting taps
IPC: B23G5/06
Filed: 1933-09-08
Abstract: 407,620. Taps. CROSS, E. J., 10, New Court, Lincoln's Inn, London.-(Dardelet Threadlock Corporation; 120, Broadway, Manhattan, New York, U.S.A.) Sept. 8, 1933, No. 24966. [Class 83 (iii).] In a tap for producing internal screwthreads of the " Dardelet self-locking " type, as described in Specifications 242,299, [Class 89 (i)], and 342,080, the preliminary cutting teeth 10 ... 18 are arranged to produce the thread profile progressively as shown in Fig. 7. The first tooth 10 produces a triangular cut, the next 11 a flat cut of less depth than the first, and the even teeth 12 .. 18 produce a narrow deep cut whilst the odd teeth 13 ... 17 produce a broad cut of less depth than the preceding tooth, The first four teeth conform on their leading sides to a cone 9 on the end of the tap which serves to centre the tap in the work. A tooth 19 of the correct thread profile follows the preliminary teeth, after which a long inclined tooth 20 on each of the lands 4 ... 7 trims the apex of the internal thread to the self-locking angle, each trimming tooth being of greater height than the preceding one. A series of non-cutting guide teeth 22 occupying two convolutions of the tap follow the trimming teeth 20, the preliminary teeth occupying two and a half convolutions. A central bore 8 in the tap provides for the supply of oil to flush the cuttings out of the flutes, and the shank is provided with a driving flat 3.
Patent GB-774264-A (GB)
Title: Improvements in or relating to hose couplings
Inventor: GORRELL DONALD WAYNE
IPC: F16L37/22
Filed: 1955-08-31
Abstract: 774,264. Hose coupling. ARO EQUIPMENT CORPORATION. Aug. 31, 1955, No. 25004/55. 'Class 99(1) Construction. The spigot 10, Fig. 2, of: a hose coupling includes a shoulder 12 with adjoining-inclined surfaces 14, 16, the former of which terminates in a reduced, portion 18 at the outer end of the spigot, whilst the socket is provided with a sleeve 20 with a seal 22 retained therein by the threaded end of a hose end fitting 26, the sleeve 20 having diametrically opposed inclined slots 28 in which are slidably located jaws 30 as shown in Fig. 6; the. bevelled edge 34 of each jaw is engaged by a washer 36, Fig. 2, that is loaded by a spring 38 the other end of which abuts. the shoulder 40 on the sleeve 20. Another washer 42 surrounds the sleeve and has bends 44, Fig. 7, therein which act as cams on the inner edges 33, Fig. 6, of the jaws. 30; this washer may be moved axially of the sleeve by means of an outer cover through a shoulder 48 to engage the washer. The socket is normally sealed by a spring-loaded disc 54. Operation. (a) Coupling. The insertion of the spigot 10 into the socket forces the disc 54 away from the seal 22 and causes the surface 14 to force the jaws 30 outwardly, and hence the washer 36 rightwardly, thereby causing compression of the 'spring 38, until the shoulder 12 passes the jaws 30 whereupon the spring. urges the jaws inwardly into the locking position shown where they lie, along the surface 16. (b) Uncoupling. The outer coyer is moved to the right so that the bends 44 engage the edges 33 and move the jaws 30 outwardly until the shoulder 12 can pass therebetween whereupon the spigot 10 can be removed from the socket.
Patent GB-868734-A (GB)
Title: Casting hollow ingots of non-ferrous metals
IPC: B22D7/00
Filed: 1958-08-05
Abstract: 868,734. Cores. ALUMINUM CO. OF AMERICA. Aug. 5, 1958 [Aug. 16, 1957], No. 25023/58. Class 83 (1). Hollow ingots of non-ferrous metals melting below 2000‹ F. except the alkali, alkaline earth, rare earth or radioactive metals, are cast in a liquid-cooled mould with a permeable, gypsum plaster core. The core acts as a heat insulator and substantially all the heat is removed through the mould or outer surface of the ingot beneath the mould, or the interior wall of the casting is smooth and free from defects. The core may be solid or comprise a plaster coating on a perforated tubular metal or plastic support. In a continuous casting process the core is inserted in sections 34, 36, which may be threaded on a steel rod, guided by adjustable arms 14 and initially located on a protuberance 32 on the movable mould bottom 30 and weighted by a weight 20. The metal is poured from a trough 6 having outlets controlled by valves 8. In an ingot mould, Fig. 4, the core is held by a pivoted weight 50. Mould and core materials.-The core material may be all gypsum plaster, but up to 1% of additives such as sodium-, sulphate-, chloride-, citrate and citric acid may be added to accelerate or retard setting. Up to 50% by volume of fillers such as talc, asbestos, glass fibre and sand may also be added. For magnesium &c. casting oxygen inhibitors such as sulphur, boric acid, alkali metal borofluorides or silicofluorides, 0.5-5% by weight may be added, together with a small amount of urea formaldehyde to suppress efflorescence of the water-soluble inhibitors. The permeable properties of the plaster are imparted by the known processes of recrystallization and rehydration, or aeration of a slurry of the semi-hydrate and water and foaming agents. Extracting cores.-The core may be cut out by mechanical means or washed out by a jet of water or compressed air or both, before or after thermal treatment of the casting. Specification 696,169 is referred to.
Patent GB-1348899-A (GB)
Title: Removal of titanium tetrachloride from titanium ttrichloride- aluminum trichloride
IPC: C08F4/64
Filed: 1971-04-19
Abstract: 1348899 Titanium trichlorlde-aluminium tri- Chloride DART INDUSTRIES Inc 19 April 1971 [9 Feb 1970] 25176/71 Heading C1A Purified cocrystallized TiCl 3  and AlCl 3  substantially free of TiCl 4  is produced by forming a slurry of a cocrystallized TiCl 3 -AlCl 3  catalyst in excess TiCl 4 , drying the catalyst to remove excess TiCl 4  to a residual amount less than 5 wt. per cent, adding to the dried catalyst finely divided Al corresponding to 1 mole Al to about 3 moles TiCl 4  and grinding the mixture in the absence of an organic diluent to complete reaction between Al and residual TiCl 4 . In an embodiment the slurry of cocrystallized TiCl 3  and AlCl 3  (in 3 : 1 ratio) is produced by reacting finely divided Al with excess TiCl 4  at 136‹ C. to 200‹ C. under reflux, the drying is at 150‹ C. to 190‹ C., and the grinding is by ball milling.
Patent GB-498935-A (GB)
Title: Apparatus for producing hollow seamless tubes
IPC: B21C1/34
Filed: 1937-09-17
Abstract: 498,935. Making tubes. DEMAG AKT.- GES. -Sept. 17, 1937, No. 25321. Convention date, Sept. 19, 1936. [Class 83 (iv)] Rolling cupping.-The mandrel shaft 3 or mandrel of a tube-making push bench is provided with transversely movable guides 4 disposed alternately on opposite sides of the push bench. The guides are mounted in holders 7 which can be pivoted up out of the way by means of a hydraulic cylinder 11-12 so that the mandrel and /or rod can be changed. The guides may be provided with magnets to carry the mandrel and /or its rod along with it. The guides are secured by splines fitting into grooves in their holders 7 so that they can be slid out by axial movement. The guides may be in the form of upper and lower halves. The rack 2 propels the mandrel forward.
Patent GB-1353479-A (GB)
Title: Function generating systems
IPC: G05B19/4103
Filed: 1971-04-19
Abstract: 1353479 Digital function generators YASKAWA DENKI SEISAKUSHO KK 19 April 1971 [24 March 1970 27 March 1970 9 April 1970 19 Sept 1970] 25342/71 Heading G4A A function generating system for use as an interpolator in a machine tool control system comprises registers 101, 102 for storing coordinate values X, Y and an adder 106 for adding X-Y or subtracting Y to or from the result of a preceding addition or subtraction operation stored in a register 107 in dependence on the sign of the preceding result, pulses dx, dy being distributed to one of the X and Y axis outputs also in dependence on the sign of the result. With the conditions shown, the system performs linear interpolation between the origin and a point X, Y. Non-linear interpolation is carried out by modifying the contents of registers 101, 102 whenever a pulse dx, dy is produced for the corresponding axis and by selecting dx or dy as the sign-dependent output. For example, with X = X - 1 for each pulse dx, Y=Y+ 1 for each pulse dy, and dx = 1 for a negative result, arcuate interpolation is obtained. Interpolation along a parabola, hyperbola and ellipse are also described in detail, as are the production of pulse trains dx, dy corresponding to expanding or contracting spirals and group circles for use in machining holes and cylindrical/conical workpieces. The function generating system is also described in relation to its use in positioning a rotary cutter relative to a workpiece, taking into account the radius of the cutter.
Patent GB-774878-A (GB)
Title: Improvements in or relating to sheet separating machines
IPC: B65H3/08
Filed: 1953-06-01
Abstract: 774,878. Feeding sheets. BACKHOUSE, H. T. Sept. 1, 1954 [June 1, 1953; March 24, 1954], Nos. 25371/54 and 25388/54. Divided out of 774,874. Drawings to Specification. Class 100(1) In apparatus for separating sheets from the top of a pile to produce a stream of partly overlapping sheets, a portion of each top sheet is lifted from the pile to stationary grippers which hold the lifted portion for a period and then release it to forwarding grippers. The apparatus is substantially as described and shown in Specification 774,874, but the following modifications are described:-(a) The corner lifting gripper may move rearwardly to clear the rear edge of the raised sheet, and then downwardly and forwardly to engage the next sheet. The path of the latter movement may be straight, but is preferably curved so that the final engagement with the sheet is effected substantially perpendicular thereto. (b) The forwarding of the sheet is begun substantially simultaneously with the beginning of the downward movement of the corner gripper, and the latter does not move in beneath the raised sheet but follows up its forwarding movement. For example, the lifting gripper transfers the lifted sheet to the stationary grippers at 220 degrees in a separating cycle, moves rearwardly between 220 and 280 degrees clear of the back edge, the forwarding of the sheet begins at 280 degrees, and at 300 degrees the lifting gripper begins to move forwardly. following up the sheet, and downwardly on to the pile to engage it at 360 degrees. Specifications 427,041, 741,226, 774,875, 774,876, 774,877 and 774,880 also are referred to.
Patent GB-445752-A (GB)
Title: Improvements in and relating to fountain pens
IPC: B43K5/17
Filed: 1935-09-12
Abstract: 445,752. Fountain pens. KUTTER, L., 4, Johann Hoffmannplatz, and HELLER, R., 3, Karlsplatz, both in Vienna. Sept. 12, 1935, No. 25373. Convention date, Sept. 15, 1934. [Class 146 (iii)] In a fountain pen comprising two telescoping tubes 1, 2, of which the outer tube carries a closing flap 4 adapted to be moved when a member 6 engaging the flap is actuated by projecting or retracting the inner tube, an annular groove 15 is formed on the inner tube for engagement by spring-pressed elements, such as balls 16, on the outer tube for the purpose of retaining the inner tube in re tracted position. The balls are carried in apertures in a sleeve 19 screwed to the tube 1 and are covered by a spring ring 18 arranged between the sleeve anc tube, the construction being such that the balls cannot escape inwardlv. The inner end of the sleeve 19 forms an abutment for a projection on the inner tube to limit the movement of the tubes. A pin 23, preferable formed of the same material as the tube, is attached to the tube 2 and engages a groove in the tube 1 to prevent relative rotation. Specification 392,482 is referred to.
Patent GB-1107118-A (GB)
Title: Method of manufacturing flexible plastics bags with releasable closure means
IPC: B29C48/12
Filed: 1965-06-16
Abstract: 1,107,118. Plastics bags. K. SIEGEL. 16 June, 1965 [16 June, 1964], No. 25487/65. Heading B8K. [Also in Divisions B5 and E2] The mouth of a plastics bag, Fig. 6, is closed by pressing together interengaging strips, see also Fig. 8, extruded integrally with the bag walls on either side of the bag mouth. The bag is made from a flattened extruded plastics tube (see Division B5), transverse welds and cuts defining each. bag, and a longitudinal edge being cut to define the mouth.
Patent GB-642147-A (GB)
Title: Improvement in the processes for manufacturing electric discharge apparatus
IPC: H01J61/54
Filed: 1947-09-19
Abstract: 642,147. Discharge apparatus. SOC. ANON. POUR LES APPLICATIONS DE L'ELECTRICITE ET DES GAZ RARES, ETABLISSEMENTS CLAUDE-PAZ & SILVA. Sept. 19, 1947, No. 25601. Convention date, Sept. 21, 1946. [Class 39 (i)] In the manufacture of gas-filled electric discharge apparatus, such as a fluorescent lamp, comprising two main electrodes materially further apart than the width of the envelope of the apparatus, and at least one conductor, in entire or partial contact with the gaseous atmosphere and extending over a length materially greater than said width, which is designed to lower the starting voltage of the apparatus, and may comprise a strip of graphite deposited on the inner surface of the lamp envelope and extending close to the electrodes, difficulty in passing the normal direct or industrial low - frequency current discharge owing to emission of gas from said conductor, even if the apparatus has been previously degassed in the usual manner, is overcome by first passing a high-frequency current comprising damped waves, and preferably equal in magnitude to the normal discharge current. The high-frequency current may be obtained by connecting the lamp in series with a sparkgap across the capacitor shunted secondary winding of a transformer, and is passed through the final gas filling of the lamp for about 30 seconds, at any time before the first discharge of direct or low-frequency current. The lamp may then be run on a 50-cycle supply until it reaches its normal working characteristics.
Patent GB-141620-A (GB)
Title: Improvements in building blocks or bricks for constructing toy houses or other buildings
IPC: A63H33/04
Filed: 1919-10-18
Abstract: 141,620. Hodges, P. W. O. Oct. 18, 1919. Building-blocks.-A constructional toy consists of a series of block or brick sections, Fig. 3, each built up or constructed to represent two or more blocks or bricks of a size proportionate to ordinary bricks, the blocks of the various courses of each section being rigidly connected together or cut from the solid. The projecting ends of the courses of a section can be fitted into those of other sections so that a wall or other structure can be built up. The sections may be arranged to represent the well-known systems of bonding bricks, and may be used in conjunction with parts representing doorways, window frames, &c. Flat I-shaped piers 4, Fig. 9, which may be fitted together as shown, may be used as tiles or to form paths or pavements. These flat pieces may be made with circular projections which interlock with recesses of similar shape in adjacent pieces.
Patent GB-738123-A (GB)
Title: Apparatus for transferring articles
IPC: D06F95/00
Filed: 1953-09-17
Abstract: 738,123. Rotary conveyers. BRITISH LAUNDRY MACHINERY CO., Ltd., and SWIFT, J. Sept. 16. 1954 [Sept. 17, 1953], No. 25665/53. Class 78 (1). Apparatus for transferring articles, e.g. laundry flatwork, from one station to another comprises a circular or polygonal structure which is rotatable about a vertical axis and has an upper rim 1 over which an edge of the article 15 is draped and a lower trough-shaped member in which the remainder of the article is supported. The rim 1 is connected by vertical members 2 to a similarly shaped lower member 3. Trough-shaped members 5 extend from the member 3 and support a lower rim 4. A fabric or metal sling 16, which is connected at its ends to the rims 1, 4, hangs below the rim 4 to form a trough 6. The rim 4 rests on three grooved pulleys 7, one of which is driven by an electric motor 11. The motor is controlled by an operator at station C through a pedal switch 12. A part 13 of the structure is hinged about a vertical axis 14 and can be swung aside to allow entry of the operator.
Patent GB-1155000-A (GB)
Title: Infra-Red Gas-Discharge Laser
IPC: H01S3/038
Filed: 1968-05-29
Abstract: 1,155,000. Lasers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 29 May, 1968 [1 June, 1967], No. 25717/68. Heading H1C. In an infra-red gas-discharge laser which comprises a quartz envelope containing a gaseous active medium which includes carbon dioxide, the envelope contains a pair of electrodes 3 each in the form of rolled-up metal foil which bears against the inner wall of the envelope and is in electrical contact with a current carrying conductor 2. The envelope is closed at its ends by a metal mirror 4 and a germanium partiallytransparent mirror 5 which together form the optical resonator. The current carrying conductors 2 are sealed into the envelope, and the contacting electrodes may have a length in the axial direction which is two to three times their diameter.
Patent GB-732725-A (GB)
Title: Process and apparatus for the inductive surface hardening of elongated workpieces
IPC: H05B6/02
Filed: 1952-10-14
Abstract: 732,725. Heat treating elongated workpieces. DEUTSCHE EDELSTAHLWERKE AKT.-GES. and KESSLER, A., [trading as MASCHINENFABRIK A. KESSLER KOMM.- 'GES.]. Oct. 14, 1952 [Oct. 17, 1951], No. 25743/52. Class 72. A process for surface-hardening elongated workpieces comprises mounting a plurality of the workpieces so that they may be moved in succession into the operating position, heating a part of the workpiece by induction heating, lowering it into a quenching bath and at the same time bringing the next workpiece into the operating position so that the corresponding part may be heated, then moving the inductor and workpieces relatively so that another part is in the operating position, successively heating and quenching the corresponding parts of the other workpieces until all the parts to be hardened are so treated. As shown, applied to the hardening of bearing surfaces on crankshafts, four crankshafts are mounted on rotary heads 7 between rotatable face plates in such a manner that each shaft may be rotated about its own axis, one of the face plates being provided with a brake so that three shafts are immersed in a quenching bath 1 and one is in a position in which an inductor heater 17, mounted on a pantograph 19, may heat the required part. The pantograph mounting is sufficiently flexible that the head 15, carrying the preferably inverted U-shaped inductor, may follow the orbital movement of the crankshaft. When heating is complete, the brake is released allowing the face plates to rotate and the heated part to be quenched. When the four shafts have been hardened in one position the inductor and pantograph, which are mounted on rails 26 above the bath, are moved to bring the inductor into position to heat. the next part requiring treatment. The quenching bath may have a pump and cooling system, the inlet to the tank from the cooler being in such a position that the cold liquid is directed against the newly quenched shaft. The quenching bath may be formed of a layer of non-inflammable liquid on the surface of an inflammable liquid.
Patent GB-518788-A (GB)
Title: Improvements in or relating to the separation of hormones from aqueous liquids
IPC: A61K38/24
Filed: 1938-09-03
Abstract: 518,788. Hormones. BRITISH DRUG HOUSES, Ltd., and MARSHALL, P. G. Sept. 3, 1938, No. 25841. [Class 81 (i)] Gonad stimulating hormone is obtained from pregnancy urine by adsorbing the hormone on benzoic or cinnamic acid formed in situ in the urine by addition of an alkali salt of the acid followed by addition of just sufficient hydrochloric acid, separating the precipitate and removing the hormone therefrom by dissolving the acid by a solvent (e.g. acetone) and after purification of the, hormone, rapidly concentrating its solution by evaporation in vacuo at a temperature not above 25‹C. The purification of the hormone after removal of the adsorbent and prior to concentration may be effected by solution in alkali, e.g. dilute ammonia, precipitation with ammonium sulphate, removal and solution of the precipitate in water and dialyzation of the solution to remove ammonium sulphate. The evaporation may be effected at temperatures below the freezing point of the solution and phosphorus pentoxide or anhydrous magnesium perchlorate may be used to assist the removal of last traces of water. Specification 406,531 is referred to.