baber/WOPTO huggingface dataset:
Patent GB-1198206-A (GB)
Title: Automatic Chroma Control Circuit
Inventor: WILLIS DONALD HENRY
IPC: H04N9/68
Filed: 1968-05-29
Abstract: 1,198,206. Television.R.C.A. CORPORATION. 29 May, 1968 [29 May, 1967], No. 25642/68. Heading H4F. An automatic chroma control (ACC) circuit for a colour TV receiver comprises means for deriving D.C. voltage components from the input and output of a colour-synchronizing- burst gate amplifier and means for controlling the gain of a chrominance amplifier in response to a predetermined combination of the said voltage components. The voltage component from the output of the burst gate amplifier is in practice derived at the grid of a phase locked colour reference oscillator to which the burst signals are applied via a narrow band filter which incidently removes any noise signals. Noise voltages present at the input to the burst gate amplifier, however, are rectified by the grid-cathode diode and produce a negative bias voltage which reduces the gain of the burst gate amplifier. The resulting reduction in the amplitude of the burst voltage applied to the oscillator causes the ACC circuit to increase the gain of the chrominance amplifier and produces an undesired increase in the signals applied to the colour demodulator. This error is minimized by applying the noise generated D.C. voltage component at the input to the burst gate amplifier to the ACC circuit to offset the variation in the voltage derived at the output of the burst gate oscillator. In a first embodiment, Fig. 1, a closed loop ACC arrangement identical to that described in Specification 1,198,207 in which a D.C. voltage component appearing at the grid of a colour reference oscillator 18 is applied via resistor 132 to an ACC circuit 28 comprising a currentcontrolled amplifier the output of which is applied as bias to a chrominance amplifier 12, is modified by connecting the earthy-end of the grid-leak resistor 94 of the burst gate amplifier 14 to the input of the current controlled amplifier. Grid-leak resistor 49 may be selected in value so that the increase in current flowing through it from an increased negative D.C. voltage component at the grid of the burst gate amplifier 14 due to noise compensates for the reduction in the current in grid-leak resistor 132 due to the resulting decrease in the amplitude of the burst signals applied to the oscillator. A second embodiment, Fig. 2 (not shown), comprises an open loop ACC arrangement in which the chrominance amplifier (12) is outside the ACC loop. The grid-leaks of the burst gate amplifier (14) and the reference oscillator (18) are connected directly to ground and the D.C. voltage components at the grids of these valves are applied to the input of a voltage amplifier which provides a bias voltage to control the gain of the chrominance amplifier (12).
Patent GB-660206-A (GB)
Title: Pipe line fitting
IPC: F16L55/10
Filed: 1949-10-01
Abstract: 660,206. Pipe line fittings. HAMER, L. S. Oct. 1, 1949. 25651/49 [Class 135] A pipe line fitting comprises a collar or clamp section B and a body section A, capable of relative axial movement so as to clamp a plate C between them such relative movement being effected by a toggle mechanism D which comprises two sets of toggle links 35 the inner ends of which are pivoted on the body section A and the outer ends of which are pivoted on a head or frame F rigidly connected by rods G with the collar B. Each set of links comprises two pairs of links, the links of each pair being pivoted together on trunnions 51 projecting from the opposite side of blocks 50. The lower of these blocks is threaded to receive the lower threaded part 55 of a spindle E rotated by a handwheel W. The upper trunnion block 50 is axially fixed with respect to the spindle between a boss 60 on the handwheel and a shoulder member 59, ball bearings 61 being arranged between the parts concerned. The inner ends of the inner links are pivoted on pins 40 supported by lugs 41 on plates 45 welded to the body section A. The outer ends of the outer links are pivoted in recesses 42 on pins 43. The frame F comprises cross arms 70 joined by a web 71. The plate C may be an orifice plate or a blinding plate or as shown a reversible plate having a blind section 30 and an orifice section 31 each section having packing rings 33 to effect sealing engagement with the faces 15, 17 on the body A and collar B respectively. The collar B has a U-shaped flange 20 which embraces the inner part 12 of the body A and forms with vertical flanges 24, a well to receive the plate C and to prevent fluid being spilt when the plate is not in place. The rods G are received in tapped lugs 80 on the collar B and are held in the ends 81 of the arms 70 by nuts 83. The rods G are slidable through guides H on the body A. The link pivots have lubricating fittings 95 and the collar B has a drain plug 96. A housing 90 with a slot 91 embraces the body A, the toggle mechanism D and the frame F. The body A and collar B have coupling flanges 10, 18. The body A has a T-shaped passage 11 but in a modification suitable for an L- shaped pipe fitting this passage has only one lateral opening.
Patent GB-368668-A (GB)
Title: Improvements in or relating to dyeing jigs
IPC: D06B3/32
Filed: 1931-09-14
Abstract: <PICT:0368668/IV/1> Cloth to be treated in a dye jigger passes from a batch roller 10 under a roller 16 in the dye liquor, which roller exerts little or no pull on the fabric and which by an up-and-down movement imparted to it or allowed by the degree of tension in the fabric operates a control mechanism through an adjustable gear whereby the speeds of paying out and taking up the fabric by the other batch roller 11 are adjusted and regulated.  The roller 16 is so p  arranged that its weight when immersed in the liquor is practically nil, and is carried in bearings 17 in slides 18.  The bearings 17 are connected by rods 19 to a lever 20 which is fastened to a shaft 21.  The movement of the roller 16 caused by any expansion or contraction of the cloth or any difference in surface speed of the rollers 10, 11, moves the rod 19 which in turn will move the shaft 21, the lever 23 and the rod 24, which being connected to the radial bracket 27 will cause this to move and through this one side of a double pawl 33 will engage a ratchet wheel in one direction or the other and in turning it will alter the variable speed shafts of the gears driving the rollers 10, 11.  A rod 50 is provided for reversing the direction of the machine.  On the end of one regulating shaft is keyed a spur-wheel which engages with a spurwheel 53 on a shaft 54 to which is keyed an indicator 55 on a disc 56, which indicator is vertical when the two rollers are running at the same surface speed. In a modification the roller 16 moves a spring-controlled swinging member to bring a friction disc in contact with one or other of two rotating discs, and the resulting rotation of the friction disc rotates the regulating shaft of the gear thus correcting the speed of travel.  Specifications 228,838, 242,416, 259,058, 260,430, [all in Class 80 (ii), Gearing, Variable-speed &c.], 285,642, [Class 83 (iii), Metals, Cutting], and 286,071, [Class 80 (ii), Gearing, Variable-speed &c.], are referred to.
Patent GB-281609-A (GB)
Title: Improvements in actions for typewriting or similar machines
IPC: B41J7/02
Filed: 1927-09-29
Abstract: 281,609. Royal Typewriter Co., Inc., (Assignees of Handley, G. F.). Dec. 1, 1926, [Convention date]. Type-lever actions.-In actions comprising type-levers connected to front intermediate levers which are connected by links to the key-levers, the links are of uniform length throughout the series of actions, and the points of connection of the links to the key-levers and intermediate levers are varied from bank to bank to obtain uniform dip and touch, the points of connection to the key-levers being progressively nearer the edges from the top to the bottom bank. Fig. 1 shows a single action consisting of a bottom bank key-lever D connected by a flat link N to a front intermediate-lever H which is connected by a link K to the type-lever G. Links N of uniform size and shape are employed throughout the series of actions, the dip and touch being rendered uniform by connecting the links to the intermediate levers and to top, second, and bottom banks of key-levers at the points a - - d and a<1> - - d<1>, Fig. 2, respectively. The points a<1> - d<1> lie on an arc struck from the common pivot of the key-levers. When alternate long and short intermediate levers are employed, the links associated with the top and second banks of key-levers are connected to the short levers H', and the links associated with the third and bottom banks are connected to the long levers H. Each link may be connected to the associated key-lever and intermediate lever at opposite sides thereof. The heels L of the centre typelevers may be arranged at a greater inclination to the type-levers than the heels of the side typelevers. Specifications 529/14 and 241,061 are referred to.
Patent GB-157563-A (GB)
Title: Improved alphabet and colour teacher
IPC: G09B19/00
Filed: 1919-10-22
Abstract: 157,563. Lewis, H. G. Oct. 22, 1919. Dra.wings to Specification, Word-building cards and blocks.-An educational or game appliance for teaching the alphabet, colours, and spelling, consists of a set of cardboard or other letters variously coloured and cut into sections, together with a chart in which the names of the colours are printed in the corresponding colour, the letters in the names being divided by lines corresponding to the divisions of the dissected letters.
Patent GB-720443-A (GB)
Title: Improvements in or relating to rotary turbines for water meters
IPC: G01F15/00
Filed: 1952-10-15
Abstract: 720,443. Rotary water meters. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Oct. 15, 1952 [Nov. 7, 1951], No. 25870/52. Class 110 (2). Rotor for a water meter has the vanes 6 integral with the hub 7 into which fits a core 8 integral with a pinion 9. The core is provided with a recess 11 to receive the top of the lower shaft of the injection box and also has a bore for the upper shaft 10, which is milled at the lower end 12. The core 8 is moulded around the shaft and may be of a superpolyamide such as nylon. On completion of the part 8, 9, 10, it is introduced into a second mould where the rotor is moulded on to the core. The turbine may be made from a graphite-polystyrene composition.
Patent GB-1169249-A (GB)
Title: Underwater Pipeline Connecting Method and Apparatus
Inventor: FISCHER WILLIAM
IPC: E21B43/013
Filed: 1967-06-05
Abstract: 1,169,249. Wells &c. CHEVRON RESEARCH CO. 5 June, 1967 [6 June, 1966], No. 25932/67. Heading E1F. [Also in Division F2] A method of connecting a pipeline 40, Fig. 5 to a submerged wellhead (14) Fig. 1 from a floating platform (30) comprises connecting flexible guide lines (26) between the wellhead and the platform, lowering a pipeline 40, Fig. 5 along the guide lines into a vertical position adjacent the wellhead with the terminal end of the pipeline at right angles to the pipeline longitudinal axis, moving the platform whilst lowering the pipeline until the pipeline axis is rotated into a horizontal position in which it is secured with its end opening 49 located relative to and parallel with the wellhead opening, lowering wellhead control apparatus 90 into register with the wellhead and pipeline openings and securing it in position to control the fluid flow. The guide sleeve (42), Figs. 2 and 4 (not shown) comprises short and long sleeves (43, 44) which slide along posts 24 in engagement with stop collar 47, Fig. 3. The pipeline 40, which includes annulus line 71 and control line 72, pivots about axis A-A and is located relative to sleeve 42 by an adjustment screw (68), Fig. 2 (not shown). A breakable link (65) which holds the elbow connector 48 and pipeline 40 in the initial vertical position is ruptured when the pipeline 40 is lowered. In the horizontal position of the pipeline a header 73, Fig. 3 is clamped in a saddle 75 by a screw 78 which is rotated from the platform by a drill string (81), Fig. 4 (not shown). The wellhead control apparatus is then lowered down line 26A and positioned by drill string 92 and sleeves 93 until a remotely-controlled coupling member 95 is aligned axially with mandrel 23 and connector 97 is aligned with the elbow opening 49. Connector 97 is mounted on a vertical guide shaft 98 and lead screw 99 so that the joint between the coupling member 95 and mandrel 23 can be made by using a drill string before or after the joint between the connector 97 and elbow 48. In modifications the wellhead end of the pipeline may terminate in a large-radius 90 turn to permit the use of wash down tools and the connection between the wellhead control apparatus and the pipeline may be independent of the wellhead. Pipeline 40 may be made up in a length equal to the distance between the wellhead and drilling vessel (10) and then lowered along guide lines (26) before lines (26B) are transferred to the lay barge (30).
Patent GB-873529-A (GB)
Title: Improvements in and relating to cast high-speed steel tools
Inventor: KREKELER KARL AUGUST
IPC: C22C38/24
Filed: 1958-08-12
Abstract: A method of making cast tools of high speed alloy steel comprises subjecting the cast tools to an annealing treatment for 1-8 hours at 1050 DEG -1200 DEG C. before carrying out the usual hardening treatment.  Cast tools made from an alloy comprising 0.6-2% C, up to 1% Si, up to 1% Mn, 3-10% Cr, 0.5-23% W, 0-12% Mo, 0-8% V, 0-23% Co, 0-3% B, 0-3% Al, 0-6% Ti, 0-6% Zr, 0-10% Nb, 0-10% Ta, up to 0.5% N, and the remainder Fe, may be annealed for 1 hour at 1100 DEG C., cooled in air, preheated to 850 DEG C., heated to 1230-1260 DEG C. in a fused salt bath, quenched in oil, and double tempered at 570 DEG C.
Patent GB-208780-A (GB)
Title: Improvements in or relating to electrically operated switches for controlling lighting or other circuits on railway vehicles or the like
IPC: B60L1/14
Filed: 1922-09-26
Abstract: 208,780. Vickers, Ltd., and Etchells, J. Sept. 26, 1922. Electromagnetic switches.-A switching system for single or double groups of lamps, or other consuming devices, especially on railway vehicles, comprises a contactor switch for each group of lamps &c., which is moved to the closed position by the energization from a local battery of one or both of two 'positive bus-bars X, Y controlled by a master retractive switch M in the guard's van and is maintained in the closed position by the substitutional energization of the closing coils J from the mains, thereby relieving the batteries. The contactors are restored to the off-position by the energization of the other positive bus-bar which supplies an opposing winding K neutralizing the winding J so that the switch resumes the off-position by gravity. As shown in the lefthand portion of the Figure applied to a single group, the positive main is connected to C and the positive lamp lead to D, the return being by earth. When the part P<2> of the three-part retractive switch M is depressed, bus-bar X is energized from the battery and the contactor is closed by the coil J, thereby closing the lamp circuit and also a maintaining circuit from the mains through the resistance L and the coil J. To open the circuit the switch P<1> is depressed, energizing bus-bar Y and the neutralizing coil K. If both X and Y are energized (by closing the third switch P<3>), J predominates and closes the contactor. In the case of the control of a double group of lamps, two contactors as described are connected in parallel, as shown in the panel at the right-hand side of the Figure. The right-hand contactor is similar to that already described, but, in the case of the left-hand contactor, the inlet J<1> will lift the core by itself when X is energized but is not powerful enough against the opposed action of K<1> when both X and Y are energized. When press-button P<2> is pressed, X is energized and all the lamps are lit; when P<3> is pressed X and Y are energized, all the single groups and one of each double group are lit; when P' is pressed, Y is energized, thereby energizing coils K, K', and all the lamps are off. The back contacts B may be utilized to introduce limiting resistances.
Patent GB-446151-A (GB)
Title: Improvements in or relating to locks and latches
IPC: E05C1/14
Filed: 1934-11-09
Abstract: 446,151. Latches. ASH, J., ROGERS, A., and ROGERS, A. L., Ashtree Works, Pargeter Street, Walsall. Nov. 9, 1934, No. 26189 /35. Divided out of 446,110. [Class 44] A latch or lock actuated by a push button or plunger and a pivoted lever has intermediate mechanism between the push button or plunger and the lever. A lever 6 pivoted at 7 has one arm 6<a> engaging a projection 8 on a sliding latch plate, its other arm 6b which is shorter than the arm 6<a> having a bent up lug 9 adapted to be engaged by the intermediate mechanism which is arranged to one side of the bolt. The intermediate mechanism shown in Fig. 1 is the same as that described in Specification 446,110, but the following forms of mechanism may be used. As shown in Fig. 4, the plunger engages a bent metal strip 15 anchored at one end to the lock casing and slotted at its other end to engage the lug 9. This strip may be replaced by a pair of toggle levers acted upon by the plunger at their junction. Fig. 6 shows a modification in which an inclined edge of the lug on the lever is engaged by the end of a plate 18 guided by two pins 20 engaging slots or notches cut in opposite ends of the plate.
Patent GB-811207-A (GB)
Title: Improvements in and relating to electric dry shavers
IPC: B26B19/04
Filed: 1957-08-20
Abstract: 811,207. Dry shavers. GONY, A. L. J. V. Aug. 20, 1957 [Oct 23, 1956], No. 26268/57. Class 131. An electric dry shaver comprises at least two cutting heads supported in the body of the shaver for pivotal movement independently of one another so that the cutting surface is automatically adapted to the outline of the part to be shaved. As shown, cutting heads, consisting of a perforated guard 4 and reciprocated cutter 5, are hinged together by a pin 8 passing through lugs 7 and having a shouldered end 10 bearing in recesses 9 formed in extensions 3 of a base plate 2 removably mounted in the shaver casing 1. A clip 11 retains the pin in the bearing and the heads are urged by a leaf spring 14 to present a concave cutting surface. Skin tensioning beads 15 assist the shaver to slide over the skin. Clamping screws or adjustable cams may be provided to lock the head in any desired position and in a modification the spring 14 is dispensed with the pivot pins being positioned midway of the height of the cutting heads or the heads being pivoted on their central longitudinal axis. Three cutting heads may be provided and the invention is stated to be applicable to circular cutting heads having rotating cutters.
Patent GB-282012-A (GB)
Title: Box of building blocks
IPC: A63H27/00
Filed: 1927-10-05
Abstract: 282,012. Kabes, V., (trading as Aero Tovarna Letadel Dr. Kabes). Dec. 7. 1926, [Convention date]. Building-blocks.-A set of building blocks for building model aircraft comprises two or more model fuselages 14, Fig. 30, and a number of blocks representing wings 11, chassis 8, motors 20, struts 7, floats, Fig. 18, control surfaces, &c., that may be assembled to form various types of aircraft. The fuselages may be formed in one piece or may be built up of several pieces. The parts may be connected by pins and slots or other means. The blocks are formed of wood or other material and may be either solid or hollow.
Patent GB-507392-A (GB)
Title: An improved method for making recesses or holes in hard electrical insulators, more particularly diamonds
IPC: C04B41/53
Filed: 1938-09-09
Abstract: 507,392. Making holes in diamonds &c. GENERAL ELECTRIC CO., Ltd. Sept. 9, 1938, No. 26370. Convention date, Dec. 17, 1937. [Class 124] [Also in Group XI] To make a hole or recess in an electric insulator of hard material such as porcelain, corundum, or diamond, the insulator 4 is immersed in an electrolyte 2, a sharply pointed electrode 6 is maintained in contact with its surface and a potential is applied between this electrode and a second-electrode 5 arranged in the electrolyte such that an intermittent current flows. Sparking will occur at the point of electrode 6 to wear away the insulator. The insulator rests on a lead plate 3 in a glass cup 1 containing dilute sulphuric acid. The applied voltage lies between 40 and 80 and the current may be alternating or direct. With the lower voltage a conical recess is formed and with the higher voltage the recess becomes more nearlycylindrical. Specification 14583/02, [Class 38], is referred to.
Patent GB-978663-A (GB)
Title: Improvements in and relating to stabilization of organic peracids
IPC: C07C407/00
Filed: 1961-05-17
Abstract: Organic peracids are stabilized by adding thereto a phosphate ester having the formula <FORM:0978663/C1/1> or <FORM:0978663/C1/2> wherein each R individually represents a hydrogen atom or an alkyl radical having from 1 to 20 carbon atoms, provided that at least one R represents an alkyl radical having from 12 to 20 carbon atoms, said ester being added in amounts of from 0.0005% to 5.0%, based on the weight of said organic peracid.  The stabilizers are effective from -50 DEG  to 150 DEG C., and for concentrations of peracid varying from 5% to 90% by weight in solvents such as water, acetic acid, propionic acid, butyric acid, acetone, diethyl ether, ethyl acetate, butyl acetate, dioxane, chloroform, benzene, toluene, hydrogen peroxide, and mixtures thereof. Peracids which may be stabilized include peracetic, perpropionic, perbutyric, perbenzoic and monoperphthalic acids. Stabilizers specified are ethyl stearyl hydrogen orthophosphate, distearyl hydrogen orthophosphate, dilauryl hydrogen orthophosphate, methyl cetyl hydrogen orthophosphate, dimyristyl hydrogen orthophosphate, stearyl dihydrogen orthophosphate, dieicosyl hydrogen orthophosphate, distearyl dihydrogen pyrophosphate, methyl stearyl dihydrogen pyrophosphate, dilauryl dihydrogen pyrophosphate, myristyl trihydrogen pyrophosphate, butyl dicetyl hydrogen pyrophosphate and dieicosyl dihydrogen pyrophosphate. Examples illustrate the stabilization of peracetic acid.