baber/WOPTO huggingface dataset:
Patent GB-625343-A (GB)
Title: Improvements in and relating to power driven sewing machines
IPC: D05B51/00
Filed: 1947-05-12
Abstract: 625,343. Sewing - machines. TEXTILE MACHINERY INNOVATIONS, Ltd., and BLACKMAN, A. S. May 12, 1947, No. 12783. [Class 112] A power driven sewing-machine has a spring urged lever 7 adjacent the presser foot and a lever 13 held against the tension of a spring 19 by a portion of thread adjacent the needle thread tension device, the arrangement being such that failure of the bobbin thread causes the lever 7 to move against the spring 10 to close an electric circuit stopping the machine, and' failure of the needle thread causes the lever 13 to be rotated by its spring to operate a cam 12 to close an electric circuit stopping the machine. Failure of the bobbin thread permits the needle thread b to move the lever 7 into the position shown in Fig. 4 where contacts 81, 9<SP>1</SP> close the electric circuit and energise an electromagnet 11 keeping the circuit closed. Thread between the take-up lever and the tension device passes through a loop 14 in the lever 13, the normal thread tension holding the lever and cam so that the spring contacts 16, 17 are separated. Failure of the needle thread permits the lever and cam to be rotated by the spring 19, the cam pressing the contacts 16, 17 together (Fig. 2) to close the circuit stopping the machine. The material to be stitched is passed betwen spring loaded contacts so that the material coming to an end will also stop the machine. Visual or audible warning devices may be actuated simultaneously with the stopping of the machine which is effected either by shutting off the power supply or by declutching.
Patent GB-105027-A (GB)
Title: Improved Seams, or Stitching.
IPC: D05B93/00
Filed: 1916-09-09
Abstract: 105,027. Willcox & Gibbs Sewing Machine Co., (Willcox & Gibbs Sewing Machine Co.). Sept. 9, 1916. Stitches and seams. -A seam adapted for joining the abutting or superposed edges of two pieces of material, or for edging, ornamental, or other purposes, comprises two outer lines of stitching-threads 30, 33, and one or more intermediate lines 31, 32 passing through the material and two surface threads 28, 29 one on each side of the material, looped across the line of the seam, and interlocked with the threads 30 - - 33, the arrangement being such that each loop i, m, p, s of each surface thread engages two loops of the threads 30 - - 33, j, k, o, n, q, r, x, t, and vice versa. The thread structure may be made as a separate article apart from fabric.
Patent GB-528231-A (GB)
Title: Improvements in the indirect heating of metal vessels by means of molten salts
IPC: C09K5/12
Filed: 1939-05-01
Abstract: 528,231. Heat-transmitting media. DEUTSCHE GOLD - UND SILBER - SCHEIDEANSTALT VORM. ROESSLER. May 1, 1939, No. 13001. Convention date, April 30, 1938. [Class 64 (ii)] Molten salts such as sodium and potassium chloride, or mixtures thereof, when used as heattransmitting media are prevented from causing corrosion to iron or steel containers by the addition of 5-15 per cent. of caustic alkali and 0.5-5 per cent. of carbon. The carbon may be wood charcoal, animal charcoal, peat charcoal, active charcoal, graphite or lignite, or carbonyielding substances such as peat or wood-waste may be used.
Patent GB-923883-A (GB)
Title: Improvements in and relating to developing photographic materials by means of ammoniacal vapours
IPC: G03D7/00
Filed: 1958-04-24
Abstract: 923,883. Method and apparatus for developing diazotype materials. OZALID CO. Ltd., and G. R. LAMBERT. April 23, 1959 [April 24, 1958; Aug. 13, 1958], Nos. 13003/58 and 25974/58. Class 98 (1). The materials are fed at an adjustable speed through a preheat zone and then an ammonia developing zone, with control of the temperature of preheat in consonance with the speed of feeding. Electronic means are referred to for effecting such control. Fig. 1, diagrammatic, is self-explanatory and then Fig. 2 shows a feedboard 17 preheated by means 18 and also a surface heater 19 beneath a front, unperforated, portion of an otherwise conventional ammonia developing apparatus.
Patent GB-266575-A (GB)
Title: Improvements in signal lamps for vehicles
IPC: B60Q7/00
Filed: 1926-05-21
Abstract: 266,575. German, L. I. P., Garman, J. M., and Garman, E. E., (trading as F.W.B. Safety Lamp Co.). May 21, 1926. Vehicle lamps; lanterns, glazing; mounting electric lamps in lanterns. - In a vehicle lamp, more particularly a rear lamp exhibiting a red triangle. the side glasses a3 axe held in position by the bent ends f<1> of the legs f<2> of a spider or like frame, the central part of which projects slightly so that the act of securing the back of the lamp in position forces the legs outwards. The bent ends are preferably provided with resilient sleeves. Fig. 2 shows the application to a triangular rear lamp, the sides of which are provided with openings glazed with clear glass for illuminating respectively the number plate and the off-side, of the road. The bulb-holder is carried by a cap h secured by a bayonet fastening to a depending flange a<4> on the lamp base, a spring k, such as a washer with tongues k<1>, being arrangeed between the bottom of the flange and the cap. The triangular front glass may be made of translucent opal glass with an opaque mask, such as a black paint coating, behind the central part, the triangular part beng coated with red paint or the like. The lamp may be bolted to the number plate or may be provided with a socket for engaging a bracket. In a modification, the bottom of the lamp has a long opening glazed with clear or diffusing glass.
Patent GB-524559-A (GB)
Title: Improvements in casting machines
IPC: B22D15/04
Filed: 1938-11-02
Abstract: 524,559. Casting-machines. EATON MANUFACTURING CO. Nov. 2, 1938, No. 13076. Convention date, April 21, 1938. [Class 83 (i)] Moulds.-To ensure the even cooling of each mould part of a casting-machine, cooling air enters a jacket of each part centrally and is discharged adjacent the margins thereof. The machine comprises a drum 14, rotated at desired speed by a motor 70 and change-speed gearing 66, 68, with hollow arms 20 carrying fixed mould halves 74, secured to supports 80 mounted on rim members 22, and movable halves 76 secured to supports 84 mounted on carriages 90 which run on radial rails 94. Each support 84 is connected by a joint 152, allowing lateral freedom, to a piston-rod 148 actuated by compressed air controlled by a valve 166 the lever 172 of which is operated by adjustable cams 192 fixed in a groove 180 of a stationary flue 48. This is coaxial with and is connected by an airtight joint 46 to the drum 14 and air is extracted from it by a fan. Each of the supports 80, 84 has a central opening 110, Figs. 3, 6, the shape and size of which can be varied by adjustable baffles 114, to admit air to the back of the mould and marginal openings 106 which communicate by means of passages 102, 104 with one of the hollow arms 20 and thus with the drum 14 in the case of a fixed support or with a tube 134, Fig. 2, radially movable in the drum in the case of a movable support. The mould shown is for casting triangular blocks with non-skid surface and each half has cooling pins or fins 112. In a modification air is fed to the moulds instead of being withdrawn. The Specification as open to inspection under Sect. 91 comprises also a modification in which the opening 110 is replaced by one or more openings positioned to obtain coolling adapted to the articles being cast. This subject-matter does not appear in the Specification as accepted.
Patent GB-676190-A (GB)
Title: Improvements in and relating to rubber bushes or torsion springs
IPC: F16F1/38
Filed: 1951-06-01
Abstract: 676,190. Resilient mountings. MOULTON, A. E. June 1, 1951, No. 13076/51. Class 108(iii) In a rubber torsional shear spring of the kind described in Specification 676,098 in which a rubber body 1 is bonded to an inner element 2 and an outer shell 3 of deformable trough-like section, and has an unbonded portion 6 across the mouth of the trough, the outer shell 3 is formed with flanges 4, 5 and is closed and reinforced by a metal plate A extending across the unbonded surface 6 and welded to the flanges 4, 5. In the construction shown, the plate A is formed by extensions 9, 10 of the flanges 4, 5 which are welded together at 11. Spacing strips 13, 14 may be inserted prior to welding, and prior to, or after formation of, bolt-receiving apertures 15, 16. Alternatively the plate A may be formed from one only of the flanges 4, 5. It may, moreover, be formed independently of the flanges 4, 5. The latter may be disposed as straight continuations of the arms 3 of the trough. The body 1 may be bonded to the central portion of the plate A. Where the shell is thick in relation to its diameter it may be pressed out, or formed in the welded position. It is then opened out subsequently by the top of the mould and assists shrinkage by returning to its initial shape.
Patent GB-894415-A (GB)
Title: Polysiloxane dyestuffs
IPC: C03C25/40
Filed: 1958-04-25
Abstract: The invention comprises polysiloxane azo dyestuffs having the unit formula <FORM:0894415/IV (a)/1> where R is the residue of an aromatic coupling component, Ar is an arylene or substituted arylene radical, Y is an alkyl radical, a is 0 or an integer and b is 0, 1 or 2.  They are prepared by diazotizing an aminoarylalkoxysilane of the formula <FORM:0894415/IV (a)/2> where V is alkoxy and d is 1 to 3, and coupling the salt with an aromatic coupling component.  The reactions may be effected in aqueous or anhydrous medium.  When both reactions are carried out under anhydrous conditions, the products are silane azo dyes which are subsequently hydrolyzed.  Suitable coupling components are phenols, anilines, naphthols, naphthyl-amines and pyrazolones, many of which are specified.  The metal complexes may also be formed.  The examples describe the preparation of (1) <FORM:0894415/IV (a)/3> and (2) its copper complex; and (3) an ink comprising the dyestuffs of (1) with sodium carbonate, water and glycerine.  The invention of Specification 870,467 is disclaimed.
Patent GB-326698-A (GB)
Title: Improvements in direction indicators
IPC: B60Q1/34
Filed: 1929-04-27
Abstract: 326,698. Bailey, A. B. April 27, 1929. Road-vehicle signals.-Three stencilled openings in an opaque plate may be selectively brightened by light passing through the openings being reflected by hand-operated mirrors contained in dark coloured chambers fitted behind the plate. The plate 20 forming the front of the casing 15 allows light passing through the openings 21, 22, 23 to be reflected by polished plates 31, 32, 33 when the latter are rotated into a vertical position. The casing is fixed to the windscreen so that the plates 31, 32, 33 normally held horizontally by clips 54 may be operated by the driver. The sides of the three, chambers which are painted a dark colour are illuminated at. night by lamps 39, 40, 41, rotation of one of the plates 31, 32, 33 causing the corresponding opening to appear brighter.
Patent GB-201664-A (GB)
Title: An improved producer gas plant
IPC: C10J3/80
Filed: 1922-05-10
Abstract: 201,664. Bentall, E. E., and Bingham, G. C. May 10, 1922. Grates.-The grate a of a gas producer acts as a flash boiler and is formed with channels b<1> connected to water supply pipes and openings are provided from the channels for the escape of steam into the fuel bed. The water is supplied by a pump, the diaphragm k of which is operated by the pressure variations in the pipe h supplying a gas engine, the pump chamber d being connected through non-return valves to water inlet and outlet pipes e, f. In a modification 'the pump is operated by the exhaust gases from the engine.
Patent GB-1451511-A (GB)
Title: Method of joining a wire to a metal foil by resistance welding
IPC: B23K11/20
Filed: 1973-03-20
Abstract: 1451511 Welding by pressure LUCAS ELECTRICAL Ltd 6 Feb 1974 [20 March 1973] 13185/73 Heading B3R In joining a wire 10 to a metal foil 11 the wire and foil are pressed together between welding electrodes 12, 13, the electrode 12 which engages the foil being recessed, and effecting a single resistance welding operation to join the wire to the foil at spaced weld locations 17. The wire 10, in an embodiment, is multi stranded copper wire and this wire is placed, together with an aluminium foil 11, between a planar electrode 13 and grooved electrode 12, both electrodes being formed of copper-chromium alloy. Current is passed between the electrodes to weld the wire to the foil at locations 17 with portions 18 remaining unwelded. The wire and foil may be those used in an alternator winding.
Patent GB-132510-A (GB)
IPC: C01F7/765
Abstract: 132,510. Gans, R. Sept. 21, 1917, [Convention date]. Ammonium alum is obtained comparatively free from iron by adding to aluminium sulphate solution containing ferric sulphate an excess of ammonium sulphate and a sufficient quantity of a base, such as ammonia, to convert the ferric salt to a basic salt which is maintained in solution by the excess of ammonium sulphate, while the ammonium alum is allowed to crystallize during agitation to obtain small crystals.
Patent GB-167743-A (GB)
Title: Improvements in and relating to toilet powder packages and the method of making the same
IPC: A45D33/00
Filed: 1921-05-10
Abstract: 167,743. Roystone, W. H. Aug. 7, 1920, [Convention date]. Packing toilet powder.- A block of compressed toilet powder is loosely covered with pervious fabric which can be rubbed over the surface of the block to obtain a supply of powder which passes through the fabric to the powder-puff. A mould 13, Fig. 2, is lined with a thin piece of pervious fabric 11, and the block of powder 10 pressed into the mould. A disc 12 of cardboard or other thin sheet material is then applied to the upper surface of the block, and the edges of the fabric 11 turned over and secured to the disc by adhesive. The assembled packet is then removed from the mould and reduced in size, preferably by compressing it into a slightly smaller mould, to loosen the fabric cover 11. The completed packet A, Fig. 4, may be removably fitted into a box 15 provided with a lid 17 and adapted to contain also a powder-puff 16.
Patent GB-756216-A (GB)
Title: Improvements relating to colour television receivers
IPC: H04N9/66
Filed: 1954-05-06
Abstract: 756,216. Television. GENERAL ELECTRIC CO. May 6, 1954 [May 6, 1953], No. 13264/54. Class 40 (3). [Also in Group XL (c)] In a colour television receiver in which the colour information is derived by synchronous detection of a phase and amplitude modulated sub-carrier under the control of a locally generated reference wave of sub-carrier frequency synchronized by received " burst " signals (of sub-carrier frequency) the locally generated wave is supplied to the synchronous detector via a circuit which is responsive only to signals the amplitude of which exceed a predetermined minimum value and which limits such signals to a predetermined maximum value. This arrangement prevents meaningless detection of the high-frequency brightness signals when " colour " is not being transmitted (i.e. in a " compatible " system) and if the strength of the received " burst " signal is insufficient to produce an acceptable picture (e.g. fringe-aerea operation) a black/white image only is reproduced instead. In the described embodiment the locally generated reference 50 (Fig. 1) wave is supplied by a crystal 46 (Fig. 1) which is " rung " during each line retrace period by means of the " gated-out " " burst " synchronizing signal 44 and fed to the synchronous detector 37 via a circuit 54, which operates to pass signals exceeding a predetermined minimum value, and a circuit 56 which operates to limit the signals from 54 to a predetermined maximum value. The combined action of 54 and 56 is effected by means of the circuit shown in Fig. 2. In this arrangement the screen grid voltage 80 and the cathode resistor 74 are so selected that (due to connection of suppressor grid to ground) the anode current is zero for a range of input voltages extending from zero to the value (determined by the circuit constants) at which the increase in negative (control grid bias (due to grid rectification) reduces the screengrid current to a value at which the cathode potential (although still positive) is sufficiently low to overcome the cut-off effect of the suppressor grid. Anode current flows at this point and as the input signal further increases a limiting action commences due to the effect of the increasing negative control-grid potential on the gain of the valve.
Patent GB-593412-A (GB)
Title: Mechanical pencils
IPC: B43K21/20
Filed: 1944-07-11
Abstract: 593,412. Propelling pencils. NEWTON, E. P. (Moore Pen Co.). July 11, 1944, No. 13273. [Class 146 (iii)] In a propelling pencil of the kind in which the lead 8 is held in a tube 20 movable axially in a barrel 90 with a spring 25 tending to retract it, the tube is formed with a resilient chuck 21 at its forward end for gripping and feeding the lead and the barrel is provided with resilient prongs 91 which engage and prevent backward movement of the lead. The chuck 21 is formed by axial slots 19 in an enlarged end of the tube 20 which is of resilient material and is slightly tapered internally. Its outer surface has a conical part 29 which by engagement with the mouth of the barrel causes the chuck to grip the lead as the tube is retracted by the spring. The tube is formed with or is attached to an extension 65 which may hold refills and has lateral projections 104 engaging abutments 95 on the barrel to limit the movement of the tube. An eraser 77 may be fitted in the extension 65. To feed a lead, the tube is depressed to the extent required by pressure on the extension 65, thus moving the lead forward relatively to the barrel. Upor release of the pressure, the prongs 91 prevent backward movement of the lead but the spring 25 retracts the tube 20 so that the lead forces the chuck jaws apart so as to be gripped thereby. As shown, the prongs 91 are formed as radial tongues on an annular member 91a mounted with slight play between brushes 91b, 91c fixed to the barrel, and project through slots 82 in the tube 20 to engage the lead 8. Full depression of the tube causes theends of the slots 82 to engage and move apart the prongs 91 so as to allow a lead to fall by gravity to the chuck. In modifications, the prongs 91 may be formed on a fixed dished member or may be struck up from the material of the barrel. In the latter case, they grip the lead continuously. New leads are inserted by removing the eraser 77,
Patent GB-476989-A (GB)
Title: Process for the saponification of cellulose esters
IPC: C08B3/24
Filed: 1937-05-10
Abstract: Cellulose esters or materials such as films, foils, fibres, filaments, threads, or fabrics composed of or containing cellulose esters are subjected to controlled saponification by treatment with a solution containing a mixture of an alkaline carbonate and boric acid.  The progress of the saponification can be followed by estimation of the sodium salt, e.g. sodium acetate, formed in the course of the reaction.  The quantity of sodium carbonate is calculated from the quantity of cellulose ester in the product to be treated and the degree of saponification required.  To the calculated quantity there is added a further quantity of 2 grams per litre of the solution, since sodium carbonate in lower concentration than this does not exert any saponifying action.  For cellulose acetate materials, the boric acid should not exceed 10 per cent of the cellulose ester and preferably it should be between 3 and 7 per cent. Mixed fabrics containing wool or natural silk together with cellulose ester fibres may be treated without harmful effect on the animal fibres. Mixed fabrics containing vegetable fibres or fibres of regenerated cellulose may be treated.  The treatment of bristles, straws, and tubes, is referred to.  In examples fabrics containing cellulose acetate and viscose or natural silk fibres are treated with the saponifying solution at raised temperature.  The saponification proceeds in a regular manner as is shown by tables of the quantities of sodium acetate formed at stated intervals.
Patent GB-461177-A (GB)
Title: Television amplifier
IPC: H03F1/50
Filed: 1935-05-07
Abstract: 461,177. Valve amplifying circuits. RADIOAKT.-GES. D. S. LOEWE. May 7, 1935, No. 13407. Convention date, May 9, 1934. [Class 40 (v)] In a television amplifier the production of shadow effects in the received picture is avoided by arranging that the anode decoupling condensers receive voltages of opposed phase. As shown in Fig. 3, the amplifier 1 receiving the signal is coupled by a tap on its anode resistance 2 to the grid of a phaseopposed valve 1<1>. In this way the de-coupling condenser 5 receives impulses of opposite phase which neutralize each other and do not cause a cumulative shadow-producing charge on the condenser 5. Further push-pull stages may follow the stage 1, 1<1>, In Fig. 4 the same effect is produced, by connecting the condenser 5 for the first stage through a resistance 21 to a tapping on the anode resistance 21 of the second stage. Similar connections are provided between the second and third stages. A glow lamp 11 may be provided in place of the anode de-coupling condenser in the later stages, and this may be shunted by a byepass condenser for the higher frequencies. Glow lamps may also be substituted for the inter-valve coupling condensers 3. The Specification also states suitable limits for the time constants of the circuits comprising (a) the coupling condenser 3 and grid resistance 4, and (b) the anode feed resistance 6 and condenser 5. The anode resistance 21 may be divided into two sections and an inductance coil shunted by a damping-resistance interposed between them. The resistance 21 is then connected to a point on the earth side of the coil Fig. 7 (not shown). The Specification as open to inspection under Sect. 91 also refers to a multi-stage amplifier of the direct-coupled type with resistance-shunted condensers connected. between each anode and the following grid, and with glow lamps replacing the usual anode de-coupling condensers. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specifications 325,833, 333,143, [both in Class 40 (v)], and 432,268.
Patent GB-950057-A (GB)
Title: Improvements in or relating to rotary compressors
Inventor: BAILEY WILFRED
IPC: F04C29/00
Filed: 1959-04-20
Abstract: 950,057. Intermeshing screw pumps. SVENSKA ROTOR MASHINA A.B. March 24, 1960 [April 20, 1959], No. 13432/59. Addition to 832386. Heading F1F. A rotary gas compressor of the positive displacement type includes a casing having a working chamber comprising a pair of intersecting bores with end walls, male and female rotors located one in each bore and having at least three interengaging helical lobes and grooves, clearances between the rotors and between the rotors and their bores, and means for introducing a sealing and cooling liquid into the working chamber so that it enters the clearances and power to drive one rotor is transmitted from the other through the liquid, the ratio of the mass flow of the liquid to that of the gas being not less than one and a half, e.g. about four. In Fig. 1, one rotor of compressor 10 is driven by shaft 13 through reduction gearing, gas entering by duct 11 and leaving by duct 12. The other rotor drives pumps 15 and 16, the latter delivering oil from a reservoir 17 through cooler 20 to inlets feeding the clearances and bearings of the rotors. Most of this oil passes out with the compressed gas to a separator 22 whence it returns to the reservoir. Oil draining from the bearings is recirculated by pump 15. One liquid may be used for filling the clearances and cooling, and another for lubricating, pump 16 circulating the former and pump 15 the latter, Fig. 2 (not shown). The compressor casing may be in two halves separable along a plane through the rotor axes.