baber/WOPTO huggingface dataset:
Patent GB-1218518-A (GB)
Title: Round end buttonhole mechanism for zigzag sewing machines
IPC: D05B3/06
Filed: 1969-06-16
Abstract: 1,218,518. Sewing-machines. SINGER CO. 16 June, 1969 [21 June, 1968], No. 30366/69. Heading DIG. A zig-zag sewing machine comprises a buttonhole mechanism for producing buttonholes having round ends by varying the field of the sewing needle and the direction of feed in such a way that the direction of feed is gradually reversed at each end of the button-hole as the field is moved gradually from one side of the button hole to the other. As shown in fig. 2 the needle bar 23 is mounted in a laterally pivotable support gate 27 which support is moved by a link 29 driven by a wobble plate by levers 36, 38 which in turn are selectively engagable with and driven by a stack of cams 42. The field of the needle is varied by a pin 52 on the link 29 which can engage any one of these surfaces 46, 47 or 48. A stitch regulator is provided comprising a pivoted member 85 with a block 83 fastened to the feed dog drive arm 82 in the normal way. A cam 111 is provided with ratchet teeth 113, 114 over part of its surface and is driven by a pawl from a reciprocating part of the machine. The arrangement is such that in the spaces between the ratchet teeth the cam can be manually turned. The cam operates through a follower 126 and a single operating member 124 to move the stitch regulating mechanism. For one set of teeth the movement is such that the stitch regulating mechanism is moved from, for example, a forward direction and a neutral position and subsequently to a reverse direction and for the other set of ratchet teeth the opposite sequence is produced. A link 133 is also influenced by this movement to act through a lever 162 a bar 163 and a lever 167 to move the lever 38 and hence alter the field of the needle. To form a button hole the lever 38, is set against the smallest surface 48 and the cam 111 is driven to reverse the feed direction while the lever 38 is moved away from the surface 48 thus producing the the round end of the buttonhole. The cam is then turned by the operator so that it is not driven and the sewing machine sews a series of zig zag stitches, with the field in its shifted position, down one side of the button hole. The cam is then turned by the operator so that the other set of teeth are engaged by the pawl and the field and stitch direction are returned to their original settings thus forming the second round end of the buttonhole. The cam is then again turned by the operator and the second side of the button hole is formed in the opposite direction to the first side again as a straight line of zig zag stitches. The single operating member 124 is connected to the stitch regulator by a pin 129 which pin can be engaged or disengaged by movement of a lever 141 so that the machine can be used as a normal zig zag machine when buttonholing is not required.
Patent GB-998414-A (GB)
Title: Improvements in or relating to modified axminster carpets and their manufacture
IPC: D03D27/12
Filed: 1961-08-23
Abstract: 998,414. Piled carpets. BIGELOW-SANDFORD Inc. Aug. 23, 1961 [Sept. 30, 1960; Oct. 4, 1960], No. 30468/61. Headings D1E and D1K. A modified Axminster carpet (Fig. 10) has tufts 97,99 which are looped under adjacent double wefts 82, 88 and are raised between the wefts to form uncut loops between the tufts. The uncut loops may be of different heights in a row, alternate tuft insertions of a spool may be omitted, the next insertion also having alternate tufts omitted to blend into the gaps left by the first insertion and the tube frames may be moved weftwise so that the tufts and loops may be staggered weftwise. Clutches 48 (Figs. 4, 9) are pivoted upwards about 39 are moved inwards about 40 to grip the spools, are moved downwards about 39 and simultaneously tilted by an arm 78 to wipe-in tufts 22. The spools are then moved rearwardly and tilted so that the first double wefts 82 may be inserted. The spools are then raised, the shed changed and the weft beaten-up. A comb 84 is then raised and the above procedure repeated to form the loops 86 and tufts 99 about the next double weft 88. The tufts 99 are severed and a further double pick 92 inserted before the cycle recommences.
Patent GB-189112-A (GB)
Title: Improvements in valve amplifiers for electrical oscillations
IPC: H03F3/22
Filed: 1922-11-07
Abstract: 189,112. Ges. f³r Drahtlose Telegraphie. Nov. 19, 1921, [Convention date]. Therntionic relays.-Relates to amplifiers of the kind in which the oscillations to be amplified are caused to vary the resistance of a valve arranged in series with a current source in the grid circuit of a second valve, and comprises a duplex or back-to-back arrangement of such valves as shown in Fig. 2. The input oscillations are applied through transformers A to the grids of two valves B, the plate circuits of which are energized in parallel by a battery D, and each includes the grid-filament path of a valve C. The plate circuits of the two valves C are connected in parallel to the battery F and are jointly coupled to the output circuit E. The Specification as open to inspection under Sect. 91 (3) (a) also describes the multiple arrangemert shown in Fig. 3 (Cancelled). The plate circuit of each valve includes the grid-filament path of the next valve, batteries being connected between each plate and the succeeding filament. Oscillations are supplied to the grid circuit of the first valve B and are taken off from the plate circuit of the last valve C'. This subject-matter does not appear in the Specification as accepted.
Patent GB-969569-A (GB)
Title: Improvements in and relating to film projectors
IPC: G03B21/32
Filed: 1963-08-01
Abstract: 969, 569. Cine projectors. EUGEN BAUER G.m.b.H. Aug. 1, 1963 [Aug. 2, 1962], No. 30477/63. Heading G2E. A cine projector has a common housing carrying feed and take-up spool spindles 10, 8, the spindle 8 being fitted to fixed housing 2 which is part of the base 7 of the apparatus, and the spindle 10 being fitted in the housing 3 which is pivoted to housing 2 at hinges 6, the spindles being coaxial when the housing 13 is closed. Film 15 is led from feed spool 4 over roller 14 along the pivot axis of the housing parts and the over obliquely mounted rollers 16, 17 to the projector 1 and to take up spool 5 over rollers 18, 19.
Patent GB-643372-A (GB)
Title: Improvements in or relating to ball-bearing slide structures
IPC: F16C29/04
Filed: 1947-11-18
Abstract: 643,372. Slide structures. ATWOOD VACUUM MACHINE CO. Nov. 18, 1947, No. 30562. Convention date, Aug. 2, 1946. [Class 52 (ii)] A slide structure for vehicles comprises at least a pair of opposed and relatively slidable channel members, at least two longitudinally spaced bearing balls disposed between and serving to space said members and having rolling contact with opposite sides of the channels to ensure straight line sliding, the balls having point contact with the channels at a number of points circumferentially placed around each ball and the channels being held in assembled relation and secured respectively to the structure and to the floor or other fixed support. As shown as applied to a vehicle seat the upper and lower channel members 14, 15 have two longitudinally spaced balls 22, 23 which have rolling and point contact with the sides of the channels at a, c, and d, e. In addition the lower channel 15 is provided with a leaf spring 31 having a hump 33 at the centre and being prevented from endwise displacement by the rivets 16 while the upper channel 14 has projections 36, 37 which together with the heads of the rivets 16, heads of the studs 7 and the raised portion 33 of the spring 31 form abutments and determine the extent of the sliding. The side flanges 29 of upper channel 14 are bent round those of the lower channel 15 to hold them in spaced relation. The studs 7 secure the upper channel 14 to the seat while the rivets 16 secure the channel 15 to a web 11 connecting sheet metal standards 9, 10 secured to the floor 8. The web 11 is provided with notches 12 for selective engagement of a spring pressed lever 13 for locking the seat in adjusted position. In modifications a leaf spring may be seated in the upper channel or the leaf springs may be dispensed with, the resilience of the metal of the channels being relied upon for applying pressure between the balls and the channels. The springs, if used, may be constructed so as to provide hardened tracks for the balls.
Patent GB-1217562-A (GB)
Title: Testing magnetic devices
IPC: G11C11/06
Filed: 1968-06-27
Abstract: 1,217,562. Electro-physical measurement - flaws. INTERNATIONAL BUSINESS MACHINES CORP. June 27, 1968 [July 14, 1967], No. 30628/68. Heading G1N. Magnetic memory cores are tested for flaws by inducing mechanical vibrations by an R.F. magnetic field, and detecting the frequency and amplitude of vibration. As shown cores are first degaussed at 12 and then tested for resonance by sweeping with a narrow band of radio frequencies while supported on an air bearing, and further tested for resonance in a D.C. field produced by coil 22. Cores which do not resonate at the appropriate level and frequencies in either test are rejected. The detector may be a super-regenerative receiver having an inductance in the feedback path influenced by the core.
Patent GB-815715-A (GB)
Title: Television receiver
IPC: H04N11/14
Filed: 1955-10-27
Abstract: 815,715. Multiplex radio signalling. SYLVANIA ELECTRIC PRODUCTS Inc. Oct. 27, 1955 [Oct. 27, 1954], No. 30828/55. Class 40 (5). [Also in Group XL (b)] In a colour or monochrome television receiver, interfering signals appearing on the C.R.T. due to the 3.58 Mc/s. colour sub-carrier and due to the 920 Kc/s. beat frequency between the colour sub-carrier and the sound/ vision inter-carrier beat frequency and/or due to the 4.5 Mc/s. beat frequency between the sound and vision carriers are eliminated by feeding signals of appropriate frequency to the C.R.T. in anti-phase to the interfering signals. In one embodiment, signals from a common I.F. amplifier 102 are passed to a crystal diode mixer 111 to provide the 4.5 Mc/s. inter-carrier signal from which the F.M. sound signal is conventionally , obtained by a tuned amplifier, limiter and discriminator. The 4.5 Mc/s. signal is also passed via a phase-shift network 175 to be subtracted from the luminance (Ey) signal in the colour adder networks 170, 171, 172 so as to cancel out any 4.5 Mc/s. component therein. The amount of phase-shift required is determined experimentally. The output of the I.F. amplifier 102 is also passed to a video detector 105 and first video amplifier 124 from the cathode of which the chrominance signal (plus the unwanted 3.58 Mc/s. signal) is passed to a 2-4 Mc/s band-pass amplifier 161 to provide the chrominance signal from which the E r  and E Q  components are conventionally obtained and also to provide the 3.58 Mc/s. cancellation signal which is passed via a phaseshift network 155 to be subtracted from the luminance (Ey) signal in the networks 170, 171, 172. In a monochrome embodiment, Fig. 1 (not shown), a similar arrangement is used in respect of the 4.5 Mc/s. signal only.
Patent GB-467084-A (GB)
Title: Improvements in the manufacture and production of inter-polymerisation products
IPC: C08F2/22
Filed: 1935-11-08
Abstract: Interpolymers are prepared by polymerizing in aqueous emulsion any desired pair of vinyl or acrylic compounds having different speeds of polymerization, in any desired proportions, by adding during the polymerization the compound having the higher speed in small fractions or continuously, at about the rate at which it is used up by the interpolymerization, to the compound having the lower speed. As compounds having a low speed of polymerization there are mentioned vinyl chloride and acrylic nitrile: and as compounds having a high speed styrene, acrylic and methacrylic acid, esters, and amide.  The course of the reaction may be controlled by specific gravity or solid-content measurements, and the Specification gives details for the former method.  In examples: (1), (2), vinyl chloride is emulsified in an aqueous solution of formic acid, hydrogen peroxide, and sodium a -hydroxyoctodecane sulphonate, and methyl acrylate added in portions during the polymerization the polymer being coagulated by aluminum sulphate, heated with aqueous caustic soda washed, and dried; (3) acrylic nitrile is emulsified in an aqueous solution of acetic acid, hydrogen peroxide, peracetic acid, and sodium a -hydroxy-octodecane sulphonate, and styrene added in portions during the polymerization, the polymer being coagulated, washed, and dried; (4) vinyl chloride is emulsified in an aqueous solution of ammonium persulphate, sodium a -hydroxy-octodecane sulphonate, and sodium pyrophosphate, and methacrylamide added in portions during the polymerization, the polymer being worked up as in example (1); (5) vinyl chloride is emulsified in an aqueous solution of ammonium persulphate and sodium a -hydroxy-octodecane sulphonate, and methyl methacrylate added in portions during the polymerization, the polymer being worked up as in example (1). The product of example (4) is stated to be useful for films, cable coverings and insulating material.  The Provisional Specification refers to the use of "at least two polymerizable unsaturated organic compounds of different speeds of polymerization."
Patent GB-465608-A (GB)
Title: A cover for bottles or the like
IPC: B65D45/32
Filed: 1935-11-09
Abstract: 465,608. Stoppers for bottles. LINDQVIST, O. M., and ANDERSEN, E. F. T. Nov. 9, 1935, No. 31040. Convention date, Oct. 10. [Class 125 (iii)] A stopper for a bottle &c. comprises one or more stationary hook shaped members 5 and an eccentrically pivoted arm 7 which can be moved into engagement with that part of the bottle opposite the stationary members. A shoulder 11 may be provided to limit the movement of the arm 7. The arm 7 may be provided with a finger piece 9 and also with an impression 10 which engages a corresponding projection on the closure. A resilient gasket may be provided within the closure.
Patent GB-1067857-A (GB)
Title: Spring hinge
IPC: E05F1/14
Filed: 1964-08-04
Abstract: 1,067,857. Spring hinges. A. KRUPER. Aug. 4, 1964 [July 17, 1963; May 29, 1964], No. 31103/64. Heading E2F. A spring hinge for furniture doors comprises first and second leaves 1, 2 and a leaf spring 20. Leaf 1 has a lug secured to the end portion 10 and engaging in a recess 5 at the end of a leg 4 on the other leaf 2. The spring presses the lug firmly into the recess 5 and urges the hinge into both the open and closed positions - after passing through a dead centre position. The position of the lug may be adjusted by a screw 15. In a second embodiment (Figs. 5-8) the first leaf carries a roller (65) of metal or a wear-resistant plastic to reduce friction and the first leaf is also provided with a plate (67) adjusted by a screw (69) to provide minor adjustment of one leaf with respect to the other leaf.
Patent GB-488522-A (GB)
Title: Apparatus for observing objects emitting invisible radiation such as ultra-violet rays
IPC: G02B23/12
Filed: 1937-11-12
Abstract: 488,522. Viewing objects by ultraviolet &c. rays. MEYSZNER, H. P. Nov. 12, 1937, No. 31110. [Class 97 (i)] Apparatus for observing objects emitting invisible radiation such as ultra-violet rays, consists of a lens system forming an image of the object on a ground glass screen provided with fluorescent or phosphorescent material, and with luminous cross-lines. In Fig. 1., the object 4 to. be observed is illuminated by a source I rich in ultra-violet radiation, provided with a filter 3 which absorbs the visible rays. The object is imaged by a system of quartz lenses 8. the first of which forms an inverted image 9 in front of the second lens which forms an erect image 9<1> on a screen 10 coated or impregnated with fluorescent or phosphorescent material. The screen is also provided with luminous cross lines formed by painting with phosphorescent &c. material or by filling such material into grooves in the screen. The casing 5 carrying the screen can be adjusted axially for focusing. A viewing enclosure 15 is provided to facilitate observation of the image. The device may be used as a telescopic sight on fire-arms, or as binoculars which may be mounted in a spectacle frame. Fig. 9 shows a fcrm of apparatus to be mounted on a motorvehicle &c. to facilitate steering in the dark, the headlamps of the vehicle being similar to the source 1 of Fig. 1. The screen A on which the visible images are formed is mounted in front of the driver and provided with a fixed horizontal luminous line 1 and small parts 2 of a vertical line. A complete luminous vertical line is marked on a glass slide 3 carried by a horizontally-displaceable member 4, the slide 3 also bearing, at the point of intersection of the vertical and horizontal. lines, a small luminous rectangle 11 which represents the vehicle. The vehicle is steered so that the rectangle 11 occupies a desired position in relation to the image of the road formed on the screen A.
Patent GB-599066-A (GB)
Title: A method of producing starch esters
IPC: C08B31/04
Filed: 1939-12-01
Abstract: Starch, dissolved in an anhydrous medium, is esterified with fatty acids and/or hydroxy fatty acids by treatment with the corresponding anhydrides or mixtures of the latter and the acids, in the presence of ammonium or metal acetates.  A suitable anhydrous medium is a mixture of ammonium acetate and acetamide, prepared by saturating acetic anhydride with dry ammonia gas and this is used in a detailed example in which potato starch is acetylated with acetic anhydride in the presence of sodium acetate, the water formed being distilled off in vacuo.  The product may be converted into the triacetate by further acetylation after adding hydrogen peroxide or other per compound. Mixed esters, e.g. lactic-formic esters may be prepared and modified starches such as cold swelling starches may be used as starting material.  Formic acid is mentioned as an anhydrous medium.
Patent GB-365179-A (GB)
Title: Breech bolt for automatic fire-arms
IPC: F41A17/66
Filed: 1930-10-18
Abstract: 365,179. Automatic guns. FROMMER, R. VON, 158, Soroksari Ut, Budapest. Oct. 18, 1930, No. 31276. [Class 119.] Relates to automatic guns having a straightpull breech-bolt 1 with a locking-head 3 rotatable about a non-rotary firing pin 5 under the action of a tongue 2 on the bolt which engages a helical groove in the head thus causing the rear end of the firing pin to recede within the bolt and out of reach of the striker 12 when the breech is open. According to the invention, forward firing movement of the firing pin against the action of a retraction spring 6 is prevented by a projection 9 on the pin which is blocked by the rear surface 13 of the locking-head except when the breech is locked, when the projection is opposite to a recess 11 in the head.
Patent GB-1424383-A (GB)
Title: Tpower systems for spacecraft or orbiting satellites
IPC: G05F1/62
Filed: 1973-08-11
Abstract: 1424383 Supply systems for spacecrafts or satellites HAWKER SIDDELEY DYNAMICS Ltd 6 Aug 1974 [11 Aug 1973] 31294/73 Heading H2H A power supply system for an orbiting spacecraft or satellite comprises a solar array having sections 12a, 12b, 12c which are switchable into and out of circuit across main bus leads 16 by a control logic circuit 17 of a voltage regulator and an array section 12 connected to the bus leads via a fine control section 21 of the regulator, and a battery 14 provided with a charge control regulator 13. In sunlight, the power supply is regulated by the control logic circuit 17 which controls the closure of switches 19a, 19b, 19c and by the fine section 21 of the regulator which controls the supplementary power supplied by the array section 12. During eclipse, the battery 14 supplies power to the bus leads via the regulator section 21.
Patent GB-520737-A (GB)
Title: Means for automatically controlling the filling of reservoirs, tanks and the like
IPC: F16K31/26
Filed: 1938-10-29
Abstract: 520,737. Valves. TECALEMIT, Ltd. Oct. 29, 1938, No. 31347. Convention date, Oct. 29, 1937. [Class 135] In apparatus for automatically controlling the level of liquid supplied to tanks, inlet is made through a tube 52 which communicates with an injector 1<SP>2</SP>. A valve 17, which is adapted to stop the flow when the required level has been reached, is under the action of a spring 18 which tends to force said valve on to the seat 12a, such action being normally prevented by a latch 62 which has a mortise 61 therein. A lever 65, which is connected to the latch 62 and to a float 66, is pivoted at 67 to the tube 2<SP>2</SP>. When the liquid-level in the tank reaches the end 70 of the tube 2<SP>2</SP>, air enclosed in said tube is expelled therefrom under the action of the jet from the injector, and a rapid rise of liquid takes place therein so that the float 66 and the latch 62 are raised, and the end of the valve-rod 17a is pushed into the cavity in the latch thereby closing the valve. A button 32 is used for re-setting the valve.
Patent GB-407449-A (GB)
Title: Improvements in or relating to the treatment of textile materials
IPC: D06M13/224
Filed: 1932-11-07
Abstract: The textile properties of yarns, fabrics &c., particularly of artificial materials made from cellulose acetate and other organic derivatives of cellulose, are improved by the application of an ester of a lower monohydric alcohol and a higher fatty acid, in particular, methyl, ethyl, propyl or butyl stearate, palmitate or oleate.  The ester may be applied as a finish by means of wicks, rolls &c. as the yarns leave the spinning cabinet or during a winding operation; or it may be applied to the yarns in hank or package form or to fabrics, by dipping, spraying &c.  The ester may be diluted with a solvent such as benzene, or it may be applied as an emulsion; and with the ester may be mixed a lubricant such as olive oil, diethylene glycol and ethyl oxybutyrate.  By the above treatment, the resistance of the material to wear is increased, the scroop is improved, and the tendency to ladder, slip or ravel is reduced.