baber/WOPTO huggingface dataset:
Patent GB-890887-A (GB)
Title: Improvements in or relating to automatic line tracers
Inventor: BROUWER FRANS
Filed: 1958-11-17
Abstract: 890,887. Electric copying machines. CANADIAN WESTINGHOUSE CO. Ltd. Nov. 17, 1958, No. 36909/58. Class 38 (6). [Also in Group XL (b)]  A photo-electric line follower for controlling a gas torch or milling head, uses a circular scan to produce an A.C. signal which is (a) used to orientate the scanning head so that the line being followed is tangential to a datum line on the head and (b) is resolved into x and y coordinate error signals to control x and y servomotors keeping the head on the line. A spotlight 21 illuminates the line 20, the light from which is focused on to a photo-cell 23 via a mirror 24 which is rotated by a synchronous motor 25. The mirror is inclined at a small angle to the motor axis to provide the circular scan. The complete assembly is mounted in a casing 13 which is rotatable by a motor 26 relative to a platform 10 about the axis O-O. The platform 10 is movable by x and y coordinate servomotors (not shown). The thickness of the line being followed is such that the output of the photo-cell is substantially a sine wave of twice synchronous frequency and this signal after amplification at 34, Fig. 3, is applied to a phase comparator 36 together with a reference signal derived from the A.C. mains, L, N through a frequency doubler 37. Any error signal drives the motor 26 to rotate the whole scanning assembly 13 &c until the cell output is in phase with the reference signal. In rotating the assembly 13 &c. it also rotates the rotor of a resolver 28. The stator of the resolver is energized by a preset velocity signal tapped off a potential divider 38 and by the output of a low-pass filter 35 energized by the output of the photo-cell 23. If the scanning head is not correctly aligned, then the amplitude of the A.C. signal varies at synchronous frequency and this component only is passed by the filter to the resolver, which then energizes the x and y co-ordinate servomotors through a motor control 40 to correct the error. The position of the spot-light 21 is manually adjustable to allow for tool offset. In a modification, the scanning head includes a second photocell 39 ahead of the main cell 23, the output of which acts on the control 40 to slow the motors on curves. In a second modification, the resolver 28 is of the D.C. type, and the filter 35 is replaced by a phase-sensitive detector. In a third modification, the reference signal is derived from a tachometer driven by the motor 25. In a fourth modification the motor 26 and the resolver 28 are mounted separately from the head and a second resolver is provided coupled to the motor so that all three rotors move together. The second resolver is then used to maintain the system in phase synchronism either by driving the motor 25 or by controlling the reference frequency. In a fifth modification, the photo-cell is rotated instead of the mirror. In a sixth modification, the lens 22 is mounted eccentrically and rotated.
Patent GB-396283-A (GB)
Title: Improvements in or relating to rolling friction bearings for sliding doors and windows
IPC: E05D15/06
Filed: 1932-12-30
Abstract: 396,283. Bearings. ZIEHL, G., Rodenkirchen, near Cologne, Germany. Dec. 30, 1932, No. 36962. [Class 12 (i).] A sliding door or window h, Figs. 2 and 3, is carried by a series of balls d mounted in a freely movable U-shaped member a having depending resilient flanges b which prevent the balls from dropping out. In the form shown in Fig. 2, two members a are mounted one in each compartment of a channel member e in the door frame, and support a pair of glass doors h. The balls are guided by grooves l in the member e and their upper ends project into the lower rims f of the doors. In the modification shown in Fig. 3, the door is adjustably suspended from an overhead track e which is similarly grooved to receive the balls. A grooved plate f rests upon the upper surface of the balls and to this plate is attached a plate i from which the door is suspended by a bolt g. The bolt passes through a screw-threaded plate k attached to the door and can be adjusted to vary the height of the door.
Patent GB-869648-A (GB)
Title: Improvements in or relating to trouser stretchers
IPC: A47G25/62
Filed: 1958-11-17
Abstract: 869,648. Trouser &c. hangers. WAGNER, M. Nov. 17, 1958 [Nov. 23, 1957; Feb. 6, 1958, July 18, 1958]; No. 36966/58. Class 52(5). A trouser &c. hanger comprises support members 1 independently and axially movable, under the action of springs 9, in apertures in a yoke 4 to move garment-engaging forks 2 outwards to engage inside a trouser leg or skirtband. Stops 8 prevent removal of the members 1 from the yoke which is engaged by the inner ends of the springs, the outer ends of the springs engaging a collar 10 secured by an abutment 7. The forks are coated with plastic and in a modification are rotatable on an axis perpendicular to the arms. In a further modification (see Fig. 6). The outer ends of the springs engage the forks 2 so that the forks can be brought very close together. The suspension hook 3 is freely rotatable.
Patent GB-523000-A (GB)
Title: Improvements in ring-spinning machines, ring-doubling machines and other like machines
IPC: D01H1/36
Filed: 1938-12-20
Abstract: 523,000. Lifter-motions for spinning &c. machines. PLATT BROS. & CO., Ltd., HUGHES, J., and WATSON, W. H. Dec. 20, 1938, Nos. 36990/38 and 1278/40. [Class 120 (ii)] Mechanism for lifting the ring-plate or like yarn guiding devices and the lappet plates of ring-spinning and like machines, comprises means in operable connection with the usual lifter bar for imparting a vertical movement to the pokers of the ring-plates through flexible connections and means for simultaneously imparting a proportional vertical movement to the pokers of the lappet-plate ; the parts are returned to the initial positions by gravity and both of the means for imparting vertical movement are independently adjustable to vary the extent of lift without any change of parts. As shown a metal band or tape 34 is adjustably secured at one end to the lifter bar 33 with its other end 37 secured to a pulley 29 on a short shaft 25 mounted in a bracket 23 secured to the spindle rail 11 ; a second pulley 30 on the shaft 25 spaced from and integral with the pulley 29 is connected by another band or tape 40 with pin 41 adjustably fixed in a bracket 44 extending from the poker 13 of the ring rail 12. A lever 54 pivoted on a pin 53 in the bracket 23 carries a bowl 55 engaging a cam 32 fixed to the pulley between them and the free end of the lever carries a bowl 56 engaging a collar 57 on the poker 18 of the lappet plate 17. In a modification the second pulley and cam are dispensed with and the band 34 passes from the lifter bar over a guide pulley to the pin 41, while a block adjustably mounted on the lifter bar carries a grooved roller engaging between the limbs of the longer arm a slotted bell-crank lever pivoted in an extension of a bracket on the spindle rail with the shorter arm carrying a bowl engaging a collar on the lappet plate poker; the longer arm of the lever may be formed of a circular rod bent to an elongated U-shape with a leg adjustably fixed at each side of the pivot of the lever on the shorter arm thereof.
Patent GB-370023-A (GB)
Abstract: 370,023. Knitting-machines. HEMPHILL CO., Central Falls, Rhode Island, U.S.A.-(Assignees of McNaughton, D. A. ; Maryville, Tennessee, U.S.A.) Oct. 2, 1930, No. 29492. Convention date, Oct. 4, 1929. [Class 74 (ii).] Patterning mechanism for a circular, rotary needle cylinder machine comprises needle wrapping means forming part of a rotatable unit 13 turning on a bearing 11 concentric with the needle cylinder. Yarn guides 37 are mounted below the bearing 11. so as to carry yarns around one or more of the needles. The yarn guides 37 are secured to a spindle 34 rotatably mounted in a sleeve 33 formed integrally with a slide 20. The slide 20 is arranged within an oscillating cam track 22 so that the sleeve 33 and spindle 34 are moved in a diametral slot 16 in the base of the unit 13. The unit 13 is driven at the same speed as the needle cylinder by a spindle 45 concentric with the needle cylinder and a clutch 54 .. 57 which permits automatic disengagement and re-engagement of the drive connection on lifting and lowering of the latch ring. Spindles 32 are provided upon the slide 20 for supporting the yarn bobbins, and the yarns are led through the spindle 34 to the guides 37. The wrapping yarns are preferably wrapped round the needles at a point substantially diametrically opposite to the main yarn feeding means of the machine so that a yarn clamping and cutting mechanism can be supported within or adjacent to the latch ring. Means may be provided for adjusting the position of the cam track 22 so that the yarn guides 37 are maintained within the needle circle when the heel and toe portions of hosiery are knitted. Jacks 59 having frangible butts 73 may be provided beneath the needles 7, each butt 73 having a cam-engaging edge substantially at right-angles to the shank of the jack and a second edge inclined to the camengaging edge. Cams are arranged in such position as to raise the selected jacks 59 so that the corresponding needles co-operate with the yarn wrapping means.
Patent GB-760306-A (GB)
Title: Improved driving means for the slides of flash welding machines
IPC: B23K11/04
Filed: 1954-12-23
Abstract: 760,306. Welding by pressure. SCHLATTER AKT.-GES., H. A. Dec. 23, 1954 [Dec. 30, 1953], No. 37176/54. Class 83 (4). [Also in Group XXVIII] In driving means for the slide 5 of a flash butt-welding machine comprising a pneumatic piston 12 linked with a hydraulic brake piston 18, the two spaces 19a, 19b of the brake cylin. der 19 being continuously in communication through a constricted pipe 20, an annular passage about the piston 18 connects the two spaces, when the brake piston passes beyond a predetermined position, to permit free flow between the spaces. The piston 12 which drives the slide 5 through a lever 10 is reciprocated under the control of a solenoid-operated valve 13 energized periodically by an electronic timer 15. A needle valve 21 in the pipe 20 allows only restricted flow of glycerine, oil, &c. in the cylinder 19. When the piston 18 passes beyond a step 22 formed in the cylinder 19 between the two spaces 19a, 19b which are of different diameters, the glycerine &c. can flow freely in the cylinder, the piston 12 moves rapidly to effect upsetting of the workpieces A, B and a switch 24 is operated by a collar 23 on the rod of the piston 18 to render the timer 15 inoperative. A switch 25 is operated to return the slide after welding. The rods of the pistons 18, 12 are adjustably screwed together and guiding ribs 28 are provided on the piston 18. An annular duct surrounding the cylinder 19 and communicating with the working spaces through ducts uncovered by the piston 18 may replace the stepped cylinder arrangement. Two pistons in tandem cylinders may replace the single piston 12, hydraulic or pneumatic means may replace the electrical control of the valve 13 and a container for brake fluid may be included in the pipe 20.
Patent GB-329357-A (GB)
Title: Improvements in the manufacture and production of derivatives of pyranthrone
IPC: C09B3/46
Filed: 1928-12-17
Abstract: 329,357. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Dec. 17, 1928. Halogenated pyranthrone ethers are obtained by treating alkyl or aryl ethers of pyranthrone with halogen or agents which split off halogen preferably in presence of organic solvents such as nitrobenzene, di or trichlorbenzene or of sulphuric acid, chlorsulphonic acid, and with the aid of halogenating catalysts of which sulphur, iodine, antimony, iron, mercury and iron chloride are specified. In examples, (1) Monomethoxypyranthrone (example 2 of Specification 325,250) is chlorinated in chlorsulphonic acid solution, in nitrobenzene solution with sulphuryl chloride, and by this latter method with the aid of iodine as catalyst; the products dye cotton brown shades; (2) monoethoxypyranthrone (example 3 of Specification 325,250) is brominated in chlorsulphonic acid solution in presence of iodine; it dyes cotton blue-red shades. Other alkylethers, such as are described in example 3 of Specification 325,250, halogenated in the same way or in the presence of organic solvents yield similar dyestuffs; (3) mono-w-chlorethoxypyranthrone. (prepared by treating the monohydroxy derivative described in example 1 of Specification 325,250 with p-toluenesulphonic acid wchlorethyl ester) is brominated as in(2) and dyes blue-red shades; (4) Bz : Bz<1>-dimethoxypyranthrone (obtained by treating (o : #<1>-tetrabromo- 2 : 21-dimethyl-1 : P-dianthraquinonyl in acid solution with copper bronze and methylating the resulting Bz : Bz<1>-dihydroxypyranthrone) is brominated in chlorsulphonic acid solution in presence of sulphur, and dyes cotton orange shades; (5) di-guaiacol ether of pyranthrone (obtained by heating together guaiacol, potash and the dibrompyranttirone prepared by brommation of pyranthrone in chlorsulphonic acid solution in presence of sulphur) is brominated in nitrobenzene in presence of iodine and iron; the product dyes cotton reddish-brown shades; (6) diphenoxypyranthrone. (obtained by boiling the dibromo derivative of (5) with phenol in presence of sodium carbonate) treated as in (5) yields a similar dyestuff. The products may be purified by crystallization by way of their oxonium sulphates which separate by adding water to their solution in concentrated sulphuric acid, or by treatment with oxidizing agents. Specification 10505/06 is referred to.
Patent GB-1177759-A (GB)
Title: Method of Fabricating Semiconductor Devices
IPC: H01L21/00
Filed: 1967-08-14
Abstract: 1,177,759. Semi-conductor devices. R.C.A. CORPORATION. 14 Aug., 1967 [13 Dec., 1966], No. 37331/67. Heading H1K. Known methods of diffusing dopant into selected regions of a semi-conductor wafer through windows in a masking layer provided on the surface of the wafer suffer from the disadvantage that in practice the masking layer contains pin hole defects so that undesired regions of the wafer are also doped. This disadvantage is overcome according to the invention by providing a masking layer on a surface of the wafer, forming windows over the regions to be doped, depositing a source of dopant on the masking layer and on the exposed surface portions of the wafer, selectively removing the source from the masking layer and from any pin holes present in the layer but not from the surface portions exposed by the windows, and then diffusing the dopant into the wafer. Preferably the source of dopant is deposited at a temperature sufficiently low to prevent the dopant from diffusing into the wafer, but if diffusion does occur at this stage the diffused regions of the wafer beneath the pin holes can be subsequently removed by etching. In a preferred embodiment a silicon wafer is provided with a thermally grown silicon dioxide masking layer about 11,000 A. deep, or a layer of silicon nitride and windows are formed in the layer by a photo-lithographic and etching process. The dopant source is then deposited, and this may comprise the dopant itself in elemental form (e.g. Al, As, Sb), an oxide of the dopant (e.g. B, P), a glass containing the dopant (e.g. borosilicate or phosphorous silicate glass) or silicon dioxide or nitride containing any of the previously mentioned dopants or Ga. The source may consist of a layer 2000 Š-5000 Š thick. The selective removal of the source is then performed with a photo-lithographic and etching process using a photo-mask which is the negative of the photomask used in the window forming process. Suitable etchants are hydrofluoric acid for boron or phosphorous oxide, and a mixture of 8 parts (by weight) of ammonium fluoride, 2 parts hydrofluoric acid and 15 parts deionized water which attacks the vapour deposited dopant-containing silicon dioxide layer about three times faster than the thermally grown silicon dioxide masking layer. If necessary, any diffused regions beneath the pin holes can be etched away with nitric acid containing 1% hydrofluoric acid. The wafer is finally heat treated to diffuse the dopant into the regions beneath the windows. Examples of the times and temperatures required for particular dopants are given in the specification.
Patent GB-1427895-A (GB)
Title: Combined rough machining and smoothing roller boring tool
IPC: B24B39/02
Filed: 1974-08-28
Abstract: 1427895 Boring tools; burnishing GEBRUDER HELLER VERWALTUNGS GmbH 28 Aug 1974 [17 Sept 1973] 37581/74 Headings B3C and B3X A combined rough machining and smoothing roller boring tool comprises a body 10, 11 formed at one end with a diametral slot 18 to receive a rough machining tool 19, a plurality of rollers 33, a cage 34 for said rollers axially adjustable on said body and axially spaced from said slot 18, a ring 29 disposed in an annular slot in said body and forming a truncated cone support surface 32 for said rollers 33 for causing said rollers to roll smooth a bore rough cut by the tool 19, and passages 15, 16, 17 for feeding cooling lubricant to the outside of the body at discharge openings 17a positioned axially between the tool 19 and the rollers 33. The flow of the cooling lubricant divides, some going forward to wash swarf from the tool 19, and some going backwards to the rollers 33 and acting to force the rollers axially along the support surface 32 to increase the rolling pressure on the bore being machined. The body is formed from a receiving head 10 holding the tool 19 and a receiving sleeve 11 screw threaded into the receiving head 10 and supporting the ring 29 and roller cage 34. A cover plate 23 retains the tool 19, and a spring detent 25, 26 centralizes the tool 19 in the slot 18. The tool 19 has a cutting element 21 at each of its ends. The cage 34 and rollers 33 are spring 36 biased to engage the rollers with the bore and cage acts against an axially adjustable thrust bearing 38. The receiving head 10 includes four guide pads (22) (Fig. 1, not shown) made of synthetic material. A hollow boring bar is screwed into the end of the receiving sleeve 11.
Patent GB-911900-A (GB)
Title: A holder for use in the sharpening of the blades of tools
IPC: B24B41/06
Filed: 1960-11-02
Abstract: 911,900. Sharpening cutting-edges. COX, K. B. Sept. 19, 1961 [Nov. 2, 1960], No. 37601/60. Class 60. A holder for a blade, e.g. of carpenter's planes, spoke-shaves and similar wood-working tools, whilst being sharpened on an oil-stone 6, whet-stone or the like comprises a substantially U-shaped frame provided with rollers 5, 5 at the ends of its limbs 1, 2, said frame being of such width as to straddle the oil stone 6, whet stone or the like so that the rollers move on the surface supporting the stone and, at or near the top of the frame there is a cross-bar 7 for supporting the blade being sharpened, this cross-bar being rotatable about an axis transverse to the blade and means being provided to secure it in any selected angular position, the cross-bar embodying means for receiving and holding the blade to be sharpened. The limbs 1, 2 are bent outwardly from and integral with a transverse bar 3. The cross-bar 7 has downwardly turned ends 7a, one of which is engaged by a rivet 8 held in the limb 1, while the other carries a screw 9 passing through the limb 2 into a nut 10 which clamps the cross-bar 7 in its selected angular position. At the centre of the cross-bar 7 is a raised portion 11 adapted to fit within the central slot 12 of a plane blade 13. The blade is clamped by a nut 15 on a screw 14 extending upwardly from the portion 11. In a modification, one end of the cross-bar 7 and the adjacent limb are marked with a scale and pointer and the blades are provided with a marker to determine their correct position on the cross-bar. In another modification, the main part of the holder is a dome-shaped or like rigid sheet-metal pressing, the upper part of which is shaped to fit the hand of the user.
Patent GB-883682-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: F04D17/04
Filed: 1957-12-06
Abstract: 883,682. Mixing appliances; driving; clamping to tables. FIRTH CLEVELAND Ltd. Dec. 6, 1957 [Dec. 7, 1956], No. 38014/57. Class 86. [Also in Groups XXIII, XXVI and XXVIII] A food mixer is combined with a suction cleaner. When the machine is to be used as a food mixer, a mixer bowl 325 and rotating mixer 326 are assembled on to the top of the cleaner body 320 and the dust bag 324 is removed. The machine is then stood on a table T, using the suction mouth 323 as a base. The suction holds it firmly on the table.
Patent GB-1360167-A (GB)
Title: Switchable magnetic holding device
IPC: B23Q3/154
Filed: 1972-08-19
Abstract: 1360167 Magnetic holding devices GOSUDARSTVENNY PROEKTNO - TEKHNOLOGICHESKY INSTITUT DEREVOOBRABATYVAJUSCHEGO STANKOSTROENIA DREVSTANKOPROM 17 Aug 1972 38319/72 Heading H1P A magnetic holding device for a ferromagnetic object 11 comprises a hollow body 1 of, e.g. mild steel in two parts 2, 3 isolated one from the other by a non-magnetic spacer 4. Within the body is slidable a magnetic unit 5 comprising a core 6 of, e.g. mild steel flanked by ceramic permanent magnets 7 with like poles adjacent the core. A rectangular head 8 projecting from the core contacts the inner surface of body 1. The outer poles of the magnets also contact the inner surface and the cavity within the body is closed by a non-magnetic plate 10, while the core is isolated from the inner surface by non- magnetic plate 9 (Figs. 1, 2, 3). With the movable unit 5 in the position of Fig. 1, head 8 contacts part 2 and magnets 7 contact part 3 so that the total flux threads and attracts the object 11, and with unit 5 in position of Fig. 3, the head and the magnets contact part 3 so that the flux threads the latter to release the object. Unit 5 is movable namually by end face knobs (not shown) or by mechanical linkages. The magnetic unit may be cylindrical sliding in a cylindrical bore of the body (Fig. 4, not shown) or the core may be of square section with four segmented spacers and magnets mounted thereon to slide in a cylindrical bore of the body (Fig. 5, not shown). An application to separation of ferromagnetic and non- magnetic matter is mentioned.
Patent GB-888739-A (GB)
Title: Fuel economy device for internal combustion engines
IPC: F02D9/00
Filed: 1958-11-28
Abstract: 888,739. Collecting and utilizing unvaporized fuel; starting; treating charge. THATCHER, F. E. Jan. 7, 1959 [Nov. 28, 1958], No. 38389/58. Classes 7(2), 7(3) and 7(5). Liquid petrol in the manifold 1 passes down a drain tube 5 into a. container 6. When the engine is running suction is created in the return tubes 10 and/or 10<SP>1</SP> so that fuel vapour present in the container 6 is drawn into the manifold 1. A single vapour return tube may be employed having a central connection with the manifold 1 or branched return tubing may be employed as indicated in dotted lines. More than one orifice or jet 13 may be provided. If desired the jet size may be variable by an adjustable needle valve member (not shown). The container should be preferably disposed closely adjacent the engine exhaust manifold so as to be heated thereby. Cowling means may be provided to direct heated air about the container or the latter may be jacketed for heating by water or the like from the engine cooling system or electrical heating means may be provided. The container 6 may be provided with a removable filler cap or plug for introducing upper cylinder lubricant into it. The device may be employed for introducing upper cylinder lubricant or similar preparations into the engine cylinder for cleaning or other purposes.