baber/WOPTO huggingface dataset:
Patent GB-362349-A (GB)
Title: Improvements in or relating to machines for grinding ball races
IPC: B24B19/06
Filed: 1930-07-30
Abstract: 362,349. Grinding ball bearing races. LANDIS TOOL CO., Waynesboro, Pennsylvania, U.S.A.- (Assignees of Steiner, A. P. ; Wine, E. P. ; and Balsiger, H. E. ; c/o Landis Tool Co., Waynesboro, Pennsylvania, U.S.A.) July 30, 1930, No. 22938. Convention date, May 27. [Class 60.] Gauges; spindle-mountings ; balancing rotating tools; wheels.-A machine for grinding the inside race of a ball bearing comprises a grinding-wheel adapted to be fed into, and retracted from the work by fluid pressure means, a work support adapted to be oscillated by a fluid pressure motor, and a fluid pressure motor for rotating the work, means also being provided for slowing the feed as the work approaches its finished size and for speeding up the rotation to polish the work. The machine consists of a base 10 having thereon an oscillating work support 11 carrying, on slides 12, 13 worksupporting headstocks 14, the support being oscillated by a fluid pressure motor 22 and the work rotated by a fluid pressure motor 20. The work is ground by a grinding-wheel 23 mounted on a wheel-base 26 movable on the bed 10 towards and from the work by a hand-wheel 27 or by a piston 31 in a cylinder 28 carried by the base, the piston-rod 32 being secured to the head and extending through a sleeve 36 screwing in a bracket 37. The rod carries a flanged collar 34, which, when the grinding-wheel has been moved by the piston into the operative position, engages the sleeve 36, the flange on the collar also engaging a bellcrank lever 54 and moving a valve stem 51 carrying a valve 47 which controls the movement of a piston 43. The piston 43, moving towards the right, by means of a rack 39 on the piston-rod 40 and a gear segment 38 on the sleeve 36, rotates the sleeve and thus allows the piston 31 to move the wheel slowly into the work until arrested by the engagement of the segment 38 with a stop; the movement of the piston 31 is slowed down by a throttle valve 67 in the exhaust line of the cylinder 28. The operation of the machine is controlled by a valve 70 operated by a hand-lever 155 and serving to admit fluid from a pump 64 to the motor 22, through a reversing valve 86, and to the motor 20 through a valve 93. The piston-rod 40 is extended to operate, through a lever 126, a valve 105 which, when the work is nearly to size, as determined by the movement of the rod 40, admits fluid to a line 108, and thence to a valve 113, which admits additional fluid to the motor 20, speeding up the work rotation for giving the work a polish. Fluid also passes through a line 107 to a valve 109 thus partially closing the supply line to the piston 43 and slowing down the feed for final grinding. The parts are returned to the starting position for operation on a new work-piece by operation of the lever 155. The grinding-wheel may be mounted, Fig. 7, on a hub 136, balanced by weights 139 and secured on a spindle 137 running in bearings 142,143. A ball bearing 149 is adjustably fitted in the bearing 143 to take end thrust.
Patent GB-740785-A (GB)
Title: Improvements in or relating to gyroscopes
Inventor: SLATER JOHN M
IPC: G01C19/16
Filed: 1953-08-20
Abstract: 740,785. Gyroscopic apparatus. NORTH AMERICAN AVIATION, Inc. Aug. 20, 1953, No. 22965/53. Class 97 (3). A gyroscope comprises a rotor secured to a shaft which is rotatable in a housing in ballbearings which have been so pre-loaded as to have the contact angles required to produce substantially equal axial and radial deflection characteristics of said gyroscope whereby errors due to linear accelerations are reduced. In the gyroscope shown, the rotor 1 is of isotropic material and is constructed so as to be symmetrical about the spin axis and about a plane normal to the skin axis and inserting the rotor. The cross-section of the rotor decreases in thickness towards the centre. Rotor 1 is attached to a shaft 2 which rotates in bearings 3 in housing 14. These bearings 3 rest in inner races 4, 5, 6 and 7 cemented to the shaft 2 and in outer races 8, 9, 10 and 11 cemented to rigid supports C and F. When assembling the apparatus, a thin coating of bonding material is applied to shaft 2 and the inner races are left just short of contact. These inner races are then squeezed together with a predetermined force to secure the proper contact angles. The rotor and housing 14 are made of the same material to eliminate errors due to temperature change.
Patent GB-488067-A (GB)
Title: Improvements in and relating to gramophone cabinets
IPC: G11B33/06
Filed: 1937-08-21
Abstract: 488,067. Cabinets. THOMPSON, J. O., DIAMOND, J., and BUTCHER, F. Aug. 21, 1937, No. 22998. [Class 52 (i)] A cabinet closure c which withdraws a sliding board f intended to carry a gramophone motor is shaped to extend rearwardly at its upper end and has side wings c<2> enclosing the space below the board when the closure is opened, in which position it abuts the front edge of the board.
Patent GB-1253708-A (GB)
Title: Semiconductor device fabrication
Inventor: LINCOLN MILAN LEE
IPC: H01L23/495
Filed: 1969-05-06
Abstract: 1,253,708. Semi-conductor devices. MOTOROLA Inc. 6 May, 1969 [28 May, 1968], No. 23001/69. Heading H1K. Apparatus for bonding leads on to the electrodes of semi-conductor dice comprises a frame 10 with a plurality of heavy steel aligning teeth 11 each having a receptacle 12 for receiving the semi-conductor dice in accurate alignment, and a weighted frame 30. During the bonding process a mounting strip 15 is placed in position on frame 10 and rigidly held in position by the teeth 11, the semi-conductor dice are placed in position in the receptacles 12, the lead strip 21 is placed on the frame and accurately located by means of notches 23 which engage indexing studs 24 on the frame, and the weighted frame 30 is placed overall and accurately located by notch 34 engaging stud 36, there being spring fingers 31 passing through apertures 67 to press the lead portions 26 and 27 on lead strip 21 into engagement with the electrode pads of the semiconductor device. The whole apparatus is then placed in an oven and heated to soldering temperature to bond the leads and electrodes together, solder having been provided on the leads and dice for this purpose. After removal from the oven, the dice and lead strips are removed from the apparatus and the leads are severed from the strip. The dice are finally encapsulated in plastics in a known manner, or sealed in a can or a ceramic package.
Patent GB-974939-A (GB)
Title: Apparatus for texturing yarn
IPC: D02G1/04
Filed: 1962-06-15
Abstract: 974,939. Crimping yarn; twist-tubes; heating arrangements. UNITED STATES RUBBER CO. June 15,1962 [Aug. 21, 1961], No. 23026/62. Headings D1D, D1F and D1W. Apparatus for texturing yarn comprises a circulating hot air oven, a fluid twisting nozzle adapted to twist yarn passing therethrough, and means for passing the yarn to be textured in a substantially straight line first through the oven and subsequently through the twister. The fluid nozzle described in Specification 974,940 may be used. As shown in Fig. 1 yarn travels at about 800- 900 feet/min from pirn 11 via pigtails 12 and 13, button tensioner 14, rubber covered roller 17 and steel roller 16-the latter possibly forming a pair of godets-, and pigtail 18 to oven 20. The oven comprises a series of chambers-one for each of a series of yarns-separated by hot air boxes 44 (Fig. 4). Hot air, from chamber 40 having a damper 41, Fig. 3 (not shown) passes via chamber 43 into boxes 44, thence through perforated plates 74 into the chambers on both sides. The air leaves the chambers through slots 48 of adjustable length and passes to ducts 49 and 50, thence either to electric resistance heaters and a pump, or direct to chamber 40. The front of the oven 20 is formed by insulation 46 with threading slots 71 for the yarns. The gas nozzle may have an air diffuser attached to the yarn inlet/gas exist end. A valve and pressure gauge may be provided for each gas nozzle to adjust individually the gas pressure therein in dependence on the directions on the initial pretwist, or, if desired, to impart unbalanced twist.
Patent GB-653994-A (GB)
Title: Improvements in and relating to electric supply systems
Inventor: SIMS ROBERT FRANK
IPC: H02J1/10
Filed: 1948-09-01
Abstract: 653,994. Automatic control systems for electricity supply systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 1, 1948, No. 23028. [Class 38 (iv)] The load on two or more alternators is shared equally under the control of the normal voltage regulators for the alternators, by providing additional coils on the regulators excited from a closed balancing circuit supplied by seriesconnected rectifiers individually connected through current transformers in the output currents of their respective alternators; Fig. 2, shows four alternators supplying a D.C. network through rectifiers 61 ... 91, voltage regulations being effected by known field regulators 63 ... 93. Equal load-sharing is accomplished by the provision of additional coils 64 ... 94 on the regulators, connected to a closed balancing circuit including rectifiers 65 ... 95 connected to output current transformers 62 ... 92. Under conditions of equal load-sharing, no p.d.s exist across the individual coils 64 . . . 94, but any unbalance causes excitation of the coils in such a manner that the voltages of the alternators are appropriately raised and lowered so as to restore balance. The system may also be applied to alternators supplying an A.C. network.
Patent GB-1331346-A (GB)
Title: Flameproofing of fibre materials of polyacrolonitrile polypropylene and or polyamide
IPC: D06M13/288
Filed: 1971-04-19
Abstract: 1331346 Phosphonic acid derivatives CIBA GEIGY AG 19 April 1971 [10 March 1970] 23110/71 Heading C2P [Also in Division D1] Phosphorus compounds are reaction products of (a<SP>1</SP>) a nitrogen compound which can be at least dimethylolated, (b<SP>1</SP>) a compound of formula wherein R 1  and R 2  are each alkyl, alkenyl or haloalkyl with at most 4C if X is H or methyl, (c<SP>1</SP>) formaldehyde or paraformaldehyde and (d<SP>1</SP>) optionally an alkanol of 1-4C. The reaction products may be of the formula wherein Y is alkyl (1-4 C), m is 4 to 6, n is 3 or 4 and p is a positive integer not greater than n + 1, or of the formula wherein A is CO, CS, -C=NH- or -CONE.CO wherein E is H or -CH 2 OY 1 , Y 1  is alkyl (1-4C) or H and q is 1, 2 or 3. Specified reactants (a<SP>1</SP>) are melamine, N-butylmelamine, ammeline, formo-, benzo-, aceto- and diguanamines, thioureas, alkylene-ureas and diureas, biuret, guanidines, 4,5-dihydroxy-imidazolidone-2 or the 4-.CH 2 .CH 2 .CONH.CH 2 OH derivative thereof, urea, and the compounds of formulae
Patent GB-328517-A (GB)
Title: Improvements in slug trimming mechanism of typographical casting machines
IPC: B41B11/72
Filed: 1929-07-29
Abstract: 328,517. Hart, H., (Mergenthaler Linotype Co.). July 29, 1929. Trimming type-bars. -In trimming-apparatus of the kind in which the movable knife is adjusted against the action of a spring by means of a rotary gauge-member operated by a hand-lever. means independent of the hand-lever is provided for relieving the gauge-member from spring pressure during the adjustment, in order to facilitate the operation and avoid wear. The adjustable knife A, Fig. 3, is carried by a slide B, which is urged towards the fixed knife A' by springs B<4>. The knife is adjusted by means of a rotary gauge. member or sector-plate D, Fig. 1, turned by means of a hand-lever E, and carrying concentric studs D', which project to different distances. The hand-lever engages the gauge-member by means of two spring-pressed pins E<4> carried by a gripmember E<1>, which is pivoted on the hand-lever, the pins engaging in concentric holes in a disc F. which is secured to the gauge-member. The pins also engage in concentric holes in a second disc C', secured to a frame-member C, whereby the gauge-member is locked in adjusted position. When the hand-lever is gripped, together with the grip-member E', the pins E<4> are withdrawn from the disc C<3>, but remain in engagement with the disc F, so that the gauge-member turns with the hand-lever. Movement of a pivoted stop E<2> out of the path of the grip-member E<1> enables the pins E<4> to be withdrawn from the disc F so that the hand-lever may be shifted to a position out of the way of the operator, and then re-engaged with the discs F, C<3>. The means for retracting the knife-slide, in order to relieve the spring pressure, preferably consists of a cam G<1>, mounted concentrically with the gauge-member D, and engaging a roller B<6> on the knife-slide. The cam is rotated by means of an auxiliary hand-lever G<2>, and is normally held in inoperative position by a spring latch engaging the hand-lever. In order to retract the knife-slide, the hand-lever G<2> is moved towards the hand-lever E, after which the two levers are grasped and rotated together, for adjusting the knife. The lever G<2> is then moved back to inoperative position.
Patent GB-936285-A (GB)
Title: Power supply device and/or circuit for gas-discharge lamps and the like
IPC: H05B41/24
Filed: 1961-06-27
Abstract: 936,285. Supply circuits for discharge lamps; inverting. SOC. TRIFLUX. June 27, 1961 [June 27, 19601, No. 23271/61. Classes 38 (2) and 38 (4). Discharge lamps 10, 10a, 10b are supplied with alternating current produced by the sequential firing and quenching of thyratrons 7, 7a whose control grids 6, 6a are connected through condensers 5, 5a to the secondary winding of a transformer 4 supplied from a pulse generator comprising an oscillator 1, a clipper 2 and a differentiating circuit 3. The thyratron anodes 8, 8a are connected to the primary winding of a transformer 9 supplying the lamps, the centre of this winding being connected through a choke coil 15 to a high anode voltage H.T. In operation each thyratron is alternately fired by the positive portion of a voltage pulse from the generator, these pulses being applied to the grids 6, 6a at a predetermined frequency to produce an alternating voltage of corresponding frequency across the secondary winding of transformer 9. Each thyratron is alternately cut off as its anode current drops below a critical value due to the voltage drop across the transformer 9 and the coil 15. The firing threshold is set by a biasing D.C. source 13 connected through resistors to the grids 6, 6a, and a condenser 14 by-passes excessive voltage surges. The thyratrons used may be gas or solid type, e.g. in the latter case, transistor thyratrons. The pulse generator circuit is also described, Fig. 2 (not shown).
Patent GB-1096361-A (GB)
Title: Process for the manufacture of tubes of glass-like substances with a narrow bore
IPC: B01L3/00
Filed: 1965-06-01
Abstract: In a process for the manufacture of tubes of glass or silica having a bore of less than 50 microns diameter, a tube of the material having an outer diameter of at least 1 cm. and a bore diameter of not more than 100 microns has its end sections sealed off to enclose an air bubble, after which the tube is rotated continuously and heated to become rather thinflowing (e.g. to about 1100 DEG  C.); it is then drawn out to from three to ten times the initial length of the enclosed air bubble, cooled, and the end sections removed.  The glass used may be a soft glass, a borosilicate glass, or fused quartz.  A disc of thickness at least 0.1 cm. may be cut from the drawn tube and, coaxially with the bore, a depression is ground on one side of the disc of a diameter at least three times the bore diameter, to leave a length of bore of from one to five times the bore diameter. Such a disc may be used in a Coulter particle counter.
Patent GB-299865-A (GB)
Title: Improvements in or relating to induction motors
IPC: H02K17/18
Filed: 1928-08-15
Abstract: 299,865. Siemens -Schuckertwerke Akt.-Ges. Nov. 3, 1927, [Convention date]. Alternating-current induction machines.-The slots 10, 20 accommodating the running winding of a double squirrel cage motor are arranged at different distances from the axis of the rotor so that the slits 12, 22 connecting these slots with the slots 11 of the starting winding at the periphery of the rotor are of different lengths. As shown, in the case of a rotor having an even number of outer slots, the long and short slits are arnanged alternately but where an odd number is provided, the running winding may have one or more fewer slots than the starting winding, or one of the lower slots may contain no winding.
Patent GB-1092005-A (GB)
Title: Adhesive compositions containing polyepoxides
IPC: C09J163/02
Filed: 1966-05-27
Abstract: An adhesive composition comprises: (a) 100 parts by weight of glycidyl ethers of polyhydric phenols with an epoxide value of 0.4 to 0.6; (b) 10 to 90 parts by weight of a plastisol based on polyvinyl chloride or copolymers of polyvinyl chloride with a plasticizer content of 30 to 50%; and (c) 1 to 10 parts by weight of a BF3 complex with oxygen containing compounds. (c) May be formed with BF3 and a lower aliphatic ether, an alcohol or a phenol, BF3:diethyl ethers complexes are especially suitable and may be dissolved in an alcohol, e.g. propanediol before use.  Up to 50% by weight of the glycidyl ethers of polyhydric phenols may be replaced with other cycloaliphatic or aliphatic hardenable epoxide compounds.  The plastisol may be based on copolymers of vinyl chloride with vinylidene chloride, vinyl acetate or acrylonitrile; the plastisol may also contain stabilizers, pigments, dyestuffs or fillers.  Up to 200 parts by weight of fillers or pigments may be present.  The composition may additionally contain coumarone resin, indene resin or light and heat stabilizers.  The adhesive form strong bonds, e.g. to aluminium, in a short time at room temperature.
Patent GB-284741-A (GB)
Title: An improved process for making manure
IPC: C05B17/00
Filed: 1926-09-27
Abstract: 284,741. Hammel, E. W. M. Sept. 27, 1926. Manures.-Substances, such as bone meal, containing or capable of yielding albumenoids or peptones are treated with hydrochloric or other inorganic acid, other than sulphuric acid, a potassium fertilizer being added during the treatment. The product is concentrated, free acid being neutralized by means of ammonia, and then dried in a vacuum, and ground or crushed to a fine powder. The powder may be mixed with peat meal.
Patent GB-601056-A (GB)
Title: Improvements in or relating to a method of knitting on knitting machines of the circular, independent needle type and to the fabric produced by that method
IPC: D04B9/46
Filed: 1944-11-29
Abstract: 601,056. Knitting. HEMPHILL CO. Nov. 29, 1944, No. 23832. Convention date, Dec. 1, 1943. [Class 74(ii)] To produce on a circular independent needle knitting machine, more nearly perfect stitches in one section of a split-fabric (e.g. the instep portion of a split foot) knitting is carried out simultaneously on two groups of needles with individual yarns, one yarn being drawn over the backs of sinkers, then radially motionless, the parts of the backs of the sinker over which that yarn is drawn all having the same height; and the other yarn is drawn in the throats of sinkers. In knitting a foot, the appropriate one of side sinker cams 11, 12, at the auxiliary side of the machine, advances at each stroke (by means of an additional point 16 or 27) the sinkers 17 associated with the instep needles, sooner and further than usual, so that a yarn 15 (which has also taken part in the formation of the leg) is drawn and measured over the sinker backs. Casting off occurs at points 161 or 27<1>, whilst the newly laid yarn is still on the sinker backs; and the sinkers are subsequently retracted by the centre cam 9 or 13, to transfer the newly formed sinker loops over the tops of the nibs to the throats. The side sinker cams 7, 8, at the main side of the machine have no additional points and the yarn 14 for the high splice, heel, sole and toe is drawn in the sinker throats. The rotary knit leg may be of the one yarn 15, but an additional, identical yarn may be fed either at the auxiliary or at main side of the machine and knitted in simultaneously. The yarn or yarns are drawn over the sinker backs and, when the second yarn is fed at the main side, a flopper cam 23, having a point 24 corresponding to the point 16, is swung in to move the sinkers in sooner and further than they would be moved by the cam 8.
Patent GB-658295-A (GB)
Title: Multiple switch, such for example, as is used for establishing a number of connections in an automatic telephone exchange
IPC: H01H67/26
Filed: 1948-09-10
Abstract: 658,295. Automatic exchange switches. STANDARD TELEPHONES & CABLES. Ltd. Sept. 10, 1948, No. 23839. Convention date, Sept. 12, 1947. [Class 40 (iv)] A multi-connecting switch comprises two kinds of electrical conductors, each kind disposed in one or more parallel flat or curved surfaces, a number of crossing points being provided at which a number of conductors of the one kind are adapted to be moved by a common member into contact with a number of conductors of the other kind, the movable conductors permitting such contact at one crossing point only. Operation of a magnet 40 (Fig. 5, not shown) withdraws a roller to permit a flexible gear on driving shaft 32 to engage gear 27, Fig. 2, to rotate a brush carriage 25 until marked contacts 21, 22 are engaged, when the magnet releases and a clutch plate 41, driven frictionally against the action of a spring 45, reverses the brush carriage slightly until a spring-pressed pawl 47 engages a ratchet 50 to position the brush carriage accurately. Clutch magnet 39 then operates to cause a flexible gear to drive cams 64, 65, Fig. 6, through one revolution. There are several levels of horizontal conductors 1 and for each level there is a pair of feelers 68, 69 urged radially outwards by the cams 64, 65 through the action of springs. Feeler 68 normally meets a tooth 94 on an L-sectioned ring 92, but energization of the appropriate magnet 96 rotates the ring 92 at one level one step to permit increased movement of the feeler 68, whereupon the feeler 69 contacts the end of one of several fingers 3 to project it radially outwards, pressing the horizontal conductors 1 into contact with several pairs of vertical conductors 2. A lever 90 carried by the feeler 69 catches against a projection 101 carried by the feeler 68, retraction of which by its cam then rotates the ring 92 a further step, whereby vertical teeth on the ring 92, by co-operation with projections 103 on the fingers 3, lock the fingers in operated or unoperated position until the related magnet 96 releases. Meanwhile the brush carriage is free to operate another finger 3 at some other level. Modification. Instead of a rotary switch, a switch moving over a straight line or over a plane may be used. Specification 632,220 is referred to.