baber/WOPTO huggingface dataset:
Patent GB-1509191-A (GB)
Title: Superconducting magnets
IPC: H01F6/00
Filed: 1975-05-22
Abstract: 1509191 Superconductive magnet coils NATIONAL RESEARCH DEVELOPMENT CORP 22 May 1975 [27 Feb 1974] 8905/74 Heading H1P Two superconducting coils 1, 2 (Fig. 1) are positioned to form a split Helmholtz pair to produce a constant magnetic field at point 7 midway between the coils on common axis 3, and the field at this point is maximized (of for a given field the size of the coils is minimized) by providing cores 5, 6 of magnetic material within the bores of the respective coils. The latter concentrate the field lines in the coil bores so that the return paths of certain lines of the field in the cores lie within the windings and adjacent the inner surfaces of the coils in opposition to the field lines generated by coil energization, so as to develop a demagnetizing effect reducing the generated field in regions where it would otherwise be a maximum. The effect of the cores is to reduce the field in such regions; enabling a greater current to energize the coils without driving them normal whereby a given field can be produced by a smaller coil. The core length L is optimized at a ratio to the core diameter of < 2À5.
Patent GB-1009320-A (GB)
Title: Improvements in or relating to methods of manufacturing parts of magnetic heads
IPC: G11B5/187
Filed: 1964-03-03
Abstract: 1,009,320. Making magnetic recording &c. head cores. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. March 3, 1964 [Sept. 5, 1963], No. 8947/64. Heading G5R. [Also in Division B3] As contrasted with the glass/ferrite heads described in Specification 897,123, channelform blocks of ferrite 1, 4 are abutted at the end B and are propped apart by mica spacers 5 at the transducing-gap end A only. The spacers 2, 3 fill with glass or enamel supplied from stock rods 6, 7 and the resulting gas formed by machining the plane A has a length decreasing with depth. This ensures a non- deterioration of video-frequency response as the head wears away, and the initial gap-size may be determined from the thickness of the mica 5 by appropriate siting of the plane A. The block is cut into a plurality of similar cores at the planes C and the member 1 may be grooved in known manner at 8, 9 to improve glass adhesion.
Patent GB-107251-A (GB)
Title: A Rotary Mechanism for the Transmission of Power at Varying Speeds.
Inventor: HUNT WILFRED
IPC: F16H33/10
Filed: 1916-06-27
Abstract: 107,251. Hunt, W. June 27, 1916. Variable-speed gearing.-In automatic variablespeed gearing of the type described in Specifications 21414/12 and 102,514, the inertia member is geared to the driven member in such a manner that the latter is driven smoothly and not by a succession of impulses. A casing 2, Fig. 1, is secured to the driving-shaft 1 and carries an integral pivot 3 on which turns the heavy ring 4. A gear wheel 5 fixed on the ring 4 gears with a wheel 6 of equal size on the driven shaft 7. The sides 11, 12 of the casing are weighted for balancing purposes,., In the form shown in Fig. 2, the inertia mass 4 is formed as a hollow sphere and carries a pinion 5 gearing with a larger loose wheel 6 carrying a ring 19 of teeth gearing through planet pinions 20, pivoted on the casing 2, with a pinion 22 on the driven shaft 7. In Fig. 3, two masses 4, 24 are shown connected by gearing 27, 28 and the pinion 5 gearing through reversing- wheels 6, 30 with the pinion 31 on the driven shaft 7. In all the forms, the gearing is so proportioned that the mean velocities of rotation of the masses and the driven shaft are equal.
Patent GB-820983-A (GB)
Title: Improvements relating to vehicle pneumatic-spring suspensions
IPC: F16F9/04
Filed: 1957-03-19
Abstract: 820,983. Pneumatic springs, DAIMLERBENZ A.G. March 19, 1957 [March 27. 1956], No. 9045/57. Class 108(3) The bellows 1 of a vehicle pneumatic spring suspension is secured to an annular member 4 in such a manner that in the position of the bellows 1 corresponding to static vehicle load, the bellows wall makes an angle # of not more than 30 degrees with the surface of the member 4.
Patent GB-353449-A (GB)
Title: Improvements in a method of manufacturing screws
IPC: B23G7/00
Filed: 1930-03-21
Abstract: 353,449. Grinding helical surfaces. MONTELIUS, C. O. J., 18, Ostermalmsgatan, Stockholm. March 21, 1930, No. 9131. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 24, 1930.] [Class 60.] Wheels.-In cutting screws for rotary engines or pumps of the kind described in Specification 231,865, [Class 110 (i), Centrifugal and screw fans &c.], in which the screw thread has a cycloidal cross section, the cutting discs are reciprocated along a straight line forming an angle with the axis of the work which is rotated continuously whilst the plane of reciprocation of the discs is moved continuously along the axis of the work. The work 1 is'mounted between centres 2, 3 and is rotated by a driver 20. Two cutting discs 4, Fig. 6, are mounted on a slide 5 reciprocated along guides 6 by a crank 12 on a shaft 21 driven by a motor 11, Fig. 5. The guides 6 are carried by a plate 7 which is angularly adjustable on a saddle 8 about the axis of the shaft 21, a circular scale 9 facilitating the angular setting to suit different pitches being out. The saddle is fed axially by a screw 24 and a motor on the slide 5 rotates the discs 4. The discs have the sections shown in Figs. 10 and 11 and each cuts one flank of the thread only, but operates during both strokes. The disc A commences cutting at the point 26 in the middle of its stroke and reaches the point 32, Fig. 11, at the end of its stroke whilst the disc B commences cutting at the point 35 at the beginning of its stroke and reaches the point 29, Fig. 10, at the middle. The flat peripheries of the discs cut the base of the base of the thread. In cutting concave cycloidal threads the disc is shaped as shown at 4 in Fig. 13 and cuts with the edges 38, 41. Multiple thread screws may be cut by using a set of discs for each screw groove, all the discs operating simultaneously and the edges of the concave threads may be rounded to an involute form by means of a flat-sided disc 37, 38, 41, 42.
Patent GB-578276-A (GB)
Title: Improvements in and relating to electric apparatus and method of applying an insulating covering thereto
IPC: H01F41/12
Filed: 1943-06-07
Abstract: 578,276. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. June 7, 1943, No. 9135. Convention date, June 9, 1942. [Class 38 (ii)] [Also in Group V] A transformer or other apparatus has a tubular portion 36 that is clamped to a core 20, 21 enabling it to be supported in a horizontal position from the R.H. end of the tube while a synthetic resinous covering 60 is cast round it. A cushioning layer 49 of sponge latex is preferably first moulded round the apparatus including the tube 36 or the latter may have a covering of cork. In the form shown, there are two cores 20, 21, with windings 22, 23, adapted to surround a primary conductor passing through a hole 59. The cores are clamped in position by means of a headed bolt 29, a bracket 27 and a nut 34, the bracket 27 having a tubular end which screws into the tube 36. The mould for receiving the latex maybe of aluminium with a highly polished inner surface which may be coated with a varnish such as an alkyd resin to prevent tearing of the latex coating when the mould is removed. After removal of the mould the latex covering is vulcanized. Specification 507,000 is referred to.
Patent GB-565920-A (GB)
Title: Improvements in dual control systems and apparatus
IPC: B64C13/12
Filed: 1941-07-21
Abstract: 565,920. Clutches. HORSTMANN, B. G., and SPERRY GYROSCOPE CO., Ltd. July 21, 1941, No. 9183. (Class 80 (ii)] [Also in Groups XXIX and XXXIII] In a dual control system having two inputs, the subordinate input is normally clutched to the load, but is declutched by the initial movement of a master manually-controlled input, and the continued movement of the latter actuates the load. The system may be applied to the control of aircraft, and the subordinate input may be operated manually or by a servomotor. The mechanism may comprise a load or output shaft 1, Fig. 2, having a flange 2, carrying clutch toggles 3, 4 drawn together by a spring 14 and engaging the subordinate input member 6, and a master input member having a striker member 9. When applied to an automatic control system for aircraft, the mechanism is interposed between a servomotor 24, Fig. 3, and a control surface 26, and the member 9 is operated by a manual control 31. The servomotor may exert a repeat back action through a cable 29, in which case if the craft is set into a new attitude by manual control, the automatic control thereafter maintains the attitude thus set. This result may also be obtained by the employment of an automatic control system without a repeat back, having valves 33, Fig. 4, operated by the diaphragm of an air relay, and needle valves 34 operated by the movement of the servomotor.
Patent GB-1419745-A (GB)
Title: Gear grinding machines
IPC: B23F5/08
Filed: 1974-03-01
Abstract: 1419745 Machining bevel gears EXPERIMENTALNY NAUCHNO-ISSLEDOVATELSKY INSTITUT METALLOREZHUSCHIKH STANKOV 1 March 1974 9287/74 Heading B3K In a straight bevel gear grinding machine a generating motion is provided to form the flank contour and crown of the gear teeth, the grinding disc being rotatably mounted on a carriage 44 mounted in a cradle 2 on the machine frame 1, the gear to be machined being rotatably supported on a work spindle 4 mounted in a headstock 6 and which is slidably adjustable to facilitate the angular adjustment of the axis 5 of the gear and spindle 4 in relation to the axis 3 and of the cradle and grinding disc, which is determined by the tooth form desired. The ends of the cradle are provided with rectangular openings 41, 42 which accommodate guide members which support the carriage 44 which is subjected to a transverse oscillatory motion within the guide members about a pivot 59, 60, at the end of the carriage spaced from the grinding disc. The cradle is also subjected to a rotary to and fro motion about its horizontal axis 3 whilst a continuous rotary motion is applied to the work spindle 4 rotating the gear G. A motor 38 is provided to drive the grinding disc by way of a flexible shaft 40, the motor being mounted on the machine frame 1. A motor 10 provides the drive for the rotary to and fro motion of the cradle 2 by way of shaft 12 and transmission gears and shafts 13, and 15 to 26 inclusive and also provides the drive to the work spindle 4 by way of gears 13, 14, 27 to 31. The motor 10 further provides the actuation of the head stock slide 7 by way of shaft 15, worm gear 33 and cam and lever 34, 35 which operates in oposition to the fluid unit 36 to provide the sequential disengagement between the grinding disc and workpiece gear as the gear rotates to bring successive gear teeth into the machining position with the grinding disc. The transverse oscillatory motion of the carrier 44 with the grinding disc W is effected from a motor 47 via transmission 48 and telescopic shaft 49 and crank and pin 70, 50 which causes the reciprocation of a slide 51, in ways 52, to which the carriage is adjustably connected. To compensate for wear on the grinding disc and resultant redressing thereof a ratchet type adjustment 68 actuated by fluid means 67 is connected to the pivot end of the carriage 44 and to the corresponding end of the cradle 2, the operation of the ratchet mechanism actuating a screw 64 to adjust the position of the pivot and hence maintain the position of axis of the grinding disc. The operation of the various components of the machine tool are effected simultaneously and in a predetermined relationship which effects the appropriate movement relationship between the grinding disc and the work gear to generate the required gear tooth form.
Patent GB-1524297-A (GB)
Title: Rotor for coreless motor
IPC: H02K13/08
Filed: 1976-03-09
Abstract: 1524297 Windings for coreless rotors of electric motors MATSUSHITA ELECTRIC WORKS Ltd 9 March 1976 [15 March 1975] 09327/76 Heading H2A A coreless rotor for an electric motor comprises a cylindrical winding R formed from a wire which is folded back at each axial end of the cylinder as winding progresses (Fig. 11, not shown), an insulating member 18, as shown, a disc, supporting the winding, and a commutator having segments 21 supported by the member 18, the segments being connected by parts 20 to an appropriate bared turned-over portions 23 of the wire. The rotor is mounted on a shaft 19 supported in bearings 24 in a member 15 carrying a permanent magnet stator core, and a cup shaped yoke 14 of magnetic material is provided. Brushes 25 engaging the commutator are mounted in a resin cap 26. In other embodiments (Figs. 8, 9, 10, not shown) L-shaped members, of one or two parts, provide a cylindrical commutator.
Patent GB-749214-A (GB)
Title: Compounds useful in the synthesis of norprogesterones and method for the production thereof
IPC: C07J75/00
Filed: 1954-03-30
Abstract: The invention comprises 3-keto-16b , 17b -D 4,9(11)-D-homoandrostadiene and the preparation thereof by treating 3-keto-D 4,9(11),16 D-homoandrostatriene with iodine in the presence of a silver salt of a saturated monocarboxylic acid containing not more than 4 carbon atoms in the molecule and hydrolysing the product. The 3-keto-D 4,9(11),16-D-homoandrostatriene is obtained by reacting 1,8a-dimethyl - D 6,10a(1) - decahydrophenanthrene-2-one with an alkyl formate having one to four carbon atoms in the molecule to produce 1,8a-dimethyl - 3 - hydroxymethylene - D 6,10a(1)-decahydrophenanthrene-2-one, which is treated with an N-alkylamine having one to four carbon atoms in the alkyl group to produce 1,8a-dimethyl - 3 - (N - alkylanilino) - methylene-D 6,10a(1) - decahydrophenanthrene - 2 - one, which is treated with acrylonitrile under alkaline conditions and the resulting nitrile hydrolysed to produce 1,8a-dimethyl-1-(b -carboxyethyl) - D 6,10 - decahydrophenanthrene - 2-one, which is subjected to cyclization by heating in the presence of a dehydrating agent to produce 3 - keto - D 5,9(11),16 - 4 - oxa - D-homoandrostatriene, which is treated with methyl magnesium halide, the resulting add tion product decomposed with mineral acid and the ether soluble portion of the product treated with an alkali metal hydroxide to obtain 3-keto - D 4,9(11),16 - D - homoandrostatriene.  3 - Keto - 16b , 17b  - dihydroxy - D 4,9(11) - D-homoandrostatriene is converted to D 9(11),16-bisdehydronorprogesterene by treating with a solution of periodic acid and heating the resulting dialdehyde in the presence of a dehydrating agent to effect cyclization thereof. Specification 746,620 is referred to.
Patent GB-493195-A (GB)
Title: Lighting attachment for sewing machines
IPC: D05B79/00
Filed: 1938-03-26
Abstract: 493,195. Sewing machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.) March 26, 1938, No. 9362. [Class 112] [Also in Group XI] In an anti-vibration mounting for lamps on sewing-machines, a tube 3 is adjustably secured by a two-part sleeve 36 and a thumb-screw 38 in a collar 33 suspended between oppositely-disposed helical beehive springs 29, 30 within a two part casing 25 provided with clearance apertures 39, 43 for the thumb-screw 38 and the tube 37. The lamp is adjustably mounted on the tube 37 and the casing 25 on a pin on the machine, as described in Specification 444,538. Endwise movement of the sleeve 36 in the collar 33 is prevented by a set-screw 40 projecting into semicircular recesses in adjacent edges of the sleeve.
Patent GB-1247484-A (GB)
Title: Button backs
Inventor: THAKE DAVID VERNON
IPC: A44B1/08
Filed: 1969-02-21
Abstract: 1,247,484. Button with textile shank. LEICESTER PLASTICS CO. Ltd. 18 Feb., 1970 [21 Feb., 1969], No. 9457/69. Heading A3H. [Also in Division B5] A thermoplastic button-back 10 has a textile shank 12.  An apparatus for manufacturing such a button-back comprises an injection-moulding tool 14, with a mould cavity 18 which has the shape of the button-back, a punch comprising a core-pin 26, a sleeve 22 and a cutting edge 24 and a sheet of textile material 16. A method for manufacturing the buttonback involves the positioning of the textile sheet 16 across the mould cavity 18. The punch then moves towards the tool 14 so that a disc is cut from the sheet 16 and forced into the dome recess 32 by the front surface 28 of the core pin 26. Thermoplastic liquid is then forced along the submarine duct 30 into the cavity 18 thus moulding the textile in place but leaving the shank in recess 32 able to be stitched.
Patent GB-1599071-A (GB)
Title: Compositions including polymeric vinyl chloride materials
IPC: C08K5/5425
Filed: 1978-03-09
Abstract: Plate-out in the processing of moulding compositions based on PVC and PVC copolymers can be substantially suppressed if the moulding compositions contain specific silane compounds. These silane compounds are silanes of the formula:     CH2 = CH - Si(OR)3 or   R' - (CH2)n - Si(OR)3 or   R'' - O - (CH2)3 - Si(OR)3 or   Cl - (CH2)m - Si(OR)3  in which R' is NH2 and m is 1 or 2 and n is 1, 2 or 3 and R'' is <IMAGE> and R is an alkyl radical or an acyl radical having 1 to 18 carbon atoms, and where the alkyl radical may optionally be interrupted a number of times by oxygen, or corresponding silanols or disiloxanes or oligomeric siloxanes thereof.
Patent GB-1518068-A (GB)
Title: Mobile combines
IPC: A01F7/06
Filed: 1977-03-07
Abstract: 1518068 Combine harvesters SPERRY RAND CORP 7 March 1977 [29 March 1976] 09500/77 Heading A1F In an axial flow combine comprising twin rotors 20 and corresponding concaves, threshed crop falling through the concaves is distributed on a grain pan 14 by means of deflecting plates 66; the crop passing through the main concave parts 22 being directed to the central portion of the pan and that passing through the concave extensions 28 falling on the outer portions.
Patent GB-658696-A (GB)
Title: Improvements in or relating to electromagnetic switches
IPC: H01H50/30
Filed: 1949-04-08
Abstract: 658,696. Electromagnetic switches. WEST & CO.. Ltd., A., and POTTER, W. April 8, 1949, No. 9610. [Class 38(v)] The movable maintaining contact 3 of an electromagnetic switch is coupled by means of a resilient connection 13 with the armature 5 and main contacts (not shown) and is controlled by a time-delay device 19 so that it will only engage or disengage contacts 4 some time after the main contacts close or open. Thus a shock or jerk which temporarily operates the main contacts will not operate the maintaining contacts and the electromagnet 2 which is in series with the maintaining contacts will remain de-energized or energized as the case may be. The armature 5 is fixed to a shaft 7 which is coupled by the spring 13 to a spider 9 carrying an insulating ring 10 with a conducting insert 3 and the spider is connected by a rod 14 with a crank on a shaft 18 connected to a train of gearing ending in a fly-wheel 6.
Patent GB-1507990-A (GB)
Title: Clip for use in remodelling suspended ceilings
IPC: E04B9/16
Filed: 1975-03-07
Abstract: 1507990 Clip for suspended ceilings ARMSTRONG CORK CO 7 March 1975 9619/75 Headings E1W and E2B A clip 2, for attachment to the runners 18 of an existing suspended ceiling comprises a horizontal elongate base member 2, the two opposed edges of which define flanges 10, and two spaced apart upwardly extending legs 6, 8 each terminating in an inwardly turned portion 12 which engages over a flange 20 of a runner 18. The inwardly turned portions 12 comprise one leg of a U-shaped clip 14 lying on its side. The clip 2 is made from sheet metal the legs being sprung apart to engage the portions 12 over the runner flanges. A method of remodelling a ceiling comprises attaching a plurality of clips 2 to the existing runners 18, Fig. 2, mounting crossmembers 22, such as those described in Specification 1399944 on the flanges 10 of the clips 2 and supported new ceiling boards on the flanges 26 of the cross - members 22.
Patent GB-927498-A (GB)
Title: Method of manufacture of light basis weight tin plate for container stock
IPC: B21B1/28
Filed: 1962-03-13
Abstract: 927,498. Making tin-plate; rolling. UNITED STATES STEEL CORPORATION. March 13, 1962 [March 22, 1961], No. 9655/62. Classes 83 (2) and 83 (4). In a method of producing light gauge tinplate a continuous strip 1 of low carbon steel is rolled at 2 to a gauge 1.67 to 2.5 times greater than its required final size, alkaline cleaned, rinsed and dried at position 3 and bright annealed in a furnace 4 of the box, opencoiled or continuous type. The strip is then passed through an electro-tinning line 5 comprising, a cleaning unit 7, tin plating and rinsing tanks 8, 9, a drier 10, a furnace and quenching unit 11, a drier 12 and driver unit 13 to a recoiler 14. The strip is plated to a thickness 1.67 to 2.5 times greater than that required on the final product. Subsequently the strip is passed through a cold-reducing mill 15 comprising two stands 16, 17 tensioning devices 18, pairs of coolant-lubricating nozzles 21, 24, lubricating film-regulating rolls 22 and a hotair drier 23 and reduced to its final gauge. It is preferable that at least 1% but not more than 20% of the total reduction effected by the mill 15 is carried out by the stand 17. The work rolls at stand 17 preferably comprise a top roll crowned 0.001 inch and paired with a cylindrical bottom roll both with a sand or shotblasted finish whilst the rolls at stand 16 are 0.001 inch concave and smooth. In both stands the back up rolls have a 0.003 inch crown. A fixed speed ratio is maintained between the two stands by a known electrical means to keep the strip in a taut condition. Preferably the lubricants are straight or water-emulsified palm oil or cotton-seed oil For matt finished material requiring an alloy layer at the steeltin interface the strip is heated to about 500‹ F. in the furnace 11 and water quenched prior to the cold reduction step whilst for mirror-finished plate the heating is carried out after cold rolling in which case the furnace unit 11 is positioned between the cleaning and treating units 32, 33. The strip is finally cleaned, treated to prevent discoloration and recoiled or cut into sheet form.