baber/WOPTO huggingface dataset:
Patent GB-1508917-A (GB)
Title: Splash trays
IPC: F24C15/14
Filed: 1976-11-30
Abstract: 1508917 Splash trays LANGRO PRODUCTS Ltd 30 Nov 1976 [30 Jan 1976] 03692/76 Heading F4W A splash tray, to fit detachably around part of a heat source on the top of a gas or electric cooking appliance, is formed from metal foil and has a central hole, an open channel 5 around the hole, the channel being bounded at its inner side by a ridge 4, and a rim 3 which extends from the base of the inner side of the ridge 4 to the periphery of the hole. The rim 3 comprises separate or separable radially extending portions (6, Fig. 1) formed with ridges 7, whereby the hole may be enlarged to match the size of said part of the heat source. The tray may be pressed from aluminium foil.
Patent GB-197039-A (GB)
Title: Improvements in and relating to feeding appliances for animals
IPC: A01K39/012
Filed: 1922-02-08
Abstract: 197,039. Herwin, W. R. Feb. 8, 1922. Feeding - appliances for animals.-Feeders for poultry &c., of the kind having a hopper f with a spring- controlled slide guided outlet device, have the guides formed as rods h, i, moving in brackets or arms k, l, on the outside of the hopper. A bait or lure consisting of grain &c. a, which may be covered with a guard, is attached to a rod c carrying a member e that closes the outlet of a hopper f and is attached to rods h, i, sliding in bent brackets k, l. Springs m, n are arranged between the bracket arm and adjustable stops o on the rods h, i. The member e may act as a spreader or a separate epreader may be attached to the rod c. The rod' c may extend into the hopper to carry agitators.
Patent GB-1416046-A (GB)
Title: Treating liquid for use in a borehole penetrating a subsurface formation and methods carried out by means of said treating liquid
IPC: C09K8/504
Filed: 1973-01-25
Abstract: 1416046 Wells SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 25 Jan 1973 [27 Jan 1972] 3737/73 Heading E1F A liquid which is used to consolidate loose grains in a bore hole, fracture, drill, plug or for secondary recovery comprises a basic aqueous solution of an amphoteric metal oxide and a pH-reducing material which lowers the pH to a point at which hydrated metal oxide is precipitated. Exemplified oxides are of aluminium, chromium, tin, zinc, arsenic, antimony or lead. The pH reducer is a relatively slowly hydrolysable ester or amide of a water soluble acid or a water soluble and readily hydrolysable organic halide. Compatible water thickeners, lubricants surfactants &c may be included. The liquid may be filtered before use in the well.
Patent GB-659183-A (GB)
Title: Improvements in or relating to double lock stitch leather sewing machines
IPC: D05B15/04
Filed: 1949-02-11
Abstract: 659,183. Sewing-machines. WINTERHOFF, W. Feb. 11, 1949, No. 3761. Convention date, Feb. 11, 1948. [Class 112] Channelling; feed, perforating - devices A channelling knife in an awl-feed leather-sewing machine is mounted to move laterally with the awl. In the arrangement shown. the arcuate awl 12 is clamped to a carrier 9 oscillating and sliding on a spindle 6 fixed in the machine frame, and the knife 18, acting on the opposite side of the work through a slot in the work support 33, is attached to a carrier 15 fitting over the hub of the awl-carrier 9 and adjustably secured thereto by a screw and slot 16, the position of adjustment being indicated on a scale 20 on the awlcarrier. The hub of the awl-carrier is located axially in a boss on the feedcarriage, which reciprocated by a cam lever linked to the carriage and engaging an adjustable stop screw to vary the feed. A collar on the spindle 6 limits movement of the awl-carrier in one direction. The awl is clamped to the carrier by a plate with a screw 10, and abuts on a pin 13 which also prevents rotation of the plate.
Patent GB-1135593-A (GB)
Title: Improvements in automatic gain-control systems
IPC: H03G3/30
Filed: 1966-01-27
Abstract: 1,135,593. Automatic gain control. RADIO CORPORATION OF AMERICA. 27 Jan., 1966 [24 Feb., 1965], No. 3811/66. Heading H3T. An automatic gain control system comprises a circuit for developing a voltage that is a function of the strength of a received signal; which is directly applied to control the collector to emitter current of an R.F. amplifier transistor, while the collector to emitter path of this transistor is direct-current connected to an I.F. amplifier transistor to control the current therein; the R.F. and I.F. amplifier transistors are so biased that for a given range of low level received signals the gain of the I.F. stage is changed while the gain of the R.F. stage remains substantially constant and for a range of higher level received signals the gain of both stages is changed. The invention is described as applied to a television tuner comprising R.F. stage 50, mixer 72 and I.F. amplifiers 88, 106. Detector 120 is direct-coupled to video amplifier 128, which acts as an emitter-follower giving a video output which is also applied via resistor 140 to the base of an auxiliary A.G.C. stage transistor 142. Line flyback pulses are applied to the collector of transistor 142 via winding 150 and diode 148, the transistor 142 being maintained non-conductive except during reception of both a line synch pulse and the flyback pulse by means of a positive potential applied to its emitter by means of potentiometer 144. The resultant D.C. pulses in the collector circuit of transistor 142 are smoothed by filter network 152, 154 and are applied as A.G.C. to the base of R.F. stage 50. Transistor 50 is operated so that its gain reduces as the collector current increases, a delay being introduced by biasing the transistor via potentiometer 60, 62 so that the initial increase of collector current is over a range in which gain remains substantially constant (Fig. 3, not shown). The increasing collector current causes a corresponding change in the voltage drop across a collector circuit resistor 58, which is applied via decoupling resistors 162, 164 to reduce the current in, and the gain of I.F. stages 95, 106: it is also applied via resistor 166 to the base of A.G.C. stage 142 to provide regenerative D.C. feedback. The specification also describes a number of modifications (Figs. 4-6, not shown) in which clamping circuits are used to prevent an excessive gain control voltage being applied to the I.F. stages. It also refers to arrangements in which reverse bias control is applied to the I.F. stages by taking the voltage for controlling their gain from a resistor in the emitter circuit of the R.F. stage.
Patent GB-1216173-A (GB)
Title: Keyboard-operated typewriter
IPC: B41J25/20
Filed: 1969-01-23
Abstract: 1,216,173. Typewriters. INTERNATIONAL BUSINESS MACHINES CORP. 23 Jan., 1969 [14 Feb., 1968], No. 3829/69. Heading B6F. A typewriter includes a key 65 which when depressed acts, on subsequent depression of a character key 41, to effect printing of the selected character without an associated letter space movement, followed by automatic printing of a predetermined character such as underscore and a subsequent letter space movement. The typewriter comprises a single element printing head 11 actuated on depression of a character key 41 by a mechanism (not shown) acted on by lugs 43a during leftward motion of an interposer 43 under the impulse of a filter shaft 51. The printing head 11 is advanced in the letter space direction by an excapement mechanism through a linkage 55, a lever 57 and a torque bar 59. On depression of the key 65, the key is latched in place by a slot 73 engaging a frame 71 owing to a spring 79, a pin 81 thereby acting to depress a bar 87 into a position such that a step 91 thereof is in the path of a blade 53 of the filter shaft 51. On depression of the character key 41, rotation of the filter shaft is initiated through a bail 45. The selected character is impressed, and simultaneously the bar 87 is driven leftward to rotate a ratchet-wheel 97 and coupled cam 109 so that a follower 113 is urged to the right and the escapement linkage is broken by displacement of the lever 57 away from engagement with the bar 59 by engagement of an end 125 of the cam follower 113 with a portion 127 of the lever 57. The rotation of the cam 109 also acts to draw a follower 129 downwardly, a portion 141 thereof depressing a underscore interposer 63. A second cycle of the filter shaft 51 is thereby initiated, causing impression of an underscore. Simultaneously, the bar 87 is again impelled to the left to rotate the ratchet-wheel 97 and cam 109 further. The follower 113 is thereby drawn to the left by a spring 121, to reconnect the lever 57 with the bar 59 and permit the operation of the letterspacing escapement mechanism. The follower 129 returns to its inoperative position with the underscore interposer 63. The key 65 remains latched in its operative position for continuous underscoring until manually released. A ball interlock 20 is provided to prevent actuation of a second key before a printing and underscoring cycle is completed.
Patent GB-1030302-A (GB)
Title: Surface coating materials
Inventor: HOLT HARRY ALFRED
IPC: C04B26/02
Filed: 1962-02-01
Abstract: A surfacing composition comprises a non-hydraulic siliceous and/or calciferous mineral powder or a mixture thereof, a surface-active dispersant, and, as binder, a resinous reaction product of an amino resin containing a plurality of reactive methylol groups with a compound containing a plurality of reactive hydroxyl and/or carboxyl groups.  Specified are:-as powders-silica, chalk, limestone, dolomite, marble, mica, vermiculite, perlite, asbestos and hydrated lime: as dispersants-sodium sulphodioctyl succinate or dodecyl benzene sulpphonate, a cetyl alcohol ethylene oxide condensate, an octyl cresol ethylene oxide condensate or a mixture of borax and lactic casein:  as binders-the amino resin is exemplified by formaldehyde condensates with urea or melamine, whilst the other reactant is sodium carboxy methyl- or ethyl hydroxy ethyl-cellulose, a copolymer of vinyl acetate and maleic anhydride, a maleinized oil salt or a partially hydrolysed vinyl acetate polymer.ALSO:A surfacing composition comprises a nonhydraulic siliceous and/or calciferous mineral powder, or a mixture thereof, a surface active dispersant, and, as binder, a resinous reaction product of an amino resin containing a plurality of reactive methylol groups with a compound containing a plurality of reactive hydroxyl and/or carboxyl groups. Specified are:-as powders-silica, chalk, limestone, dolomite, marble, vermiculite, mica, perlite, asbestos and hydrated lime; as dispersants-sodium dioctyl sulphosuccinate or dodecyl benzene sulphonate, a condensate of ethylene oxide with a cetyl alcohol or octyl cresol, or a mixture of lactic casein and borax:  as binders-the amino resin is exemplified by formaldehyde condensates with urea or melamine, whilst the other reactant is sodium carboxymethyl- or ethyl hydroxy ethyl-cellulose, a copolymer of vinyl acetate and maleic anhydride, a maleinized oil salt or a partially hydrolysed vinyl acetate polymer.
Patent GB-471670-A (GB)
Title: Artificial resins
IPC: C08F214/06
Filed: 1936-02-08
Abstract: Artificial resins are prepared by interpolymerizing a vinyl ester of a lower aliphatic acid and a vinyl halide in the presence of not more than 10 per cent of an ether or ester of an unsaturated acid or alcohol, such ether or ester having at least two non-conjugated olefinic double bonds and being free from all cross-conjugated linkages.  Suitable ethers and esters include allyl crotonate, ethylene glycol dicrotonate, crotyl crotonate, crotyl acrylate, divinyl ether, divinyl acetal and diallyl ether. Catalysts such as dibenzoyl peroxide or acetyl benzoyl peroxide or diluents such as aliphatic hydrocarbons, alcohols or ketones may be employed in the polymerization.  In examples, vinyl chloride or vinyl acetate, with allyl crotonate, ethylene glycol dicrotonate, divinyl ether or divinyl acetal, is polymerized in the presence of acetylbenzoyl peroxide and acetone.  Divinyl acetal is prepared by reacting acetaldehyde with ethylene chlorhydrin in the presence of an inorganic acid to form ethylidene di-(b -chlorethylether) and reacting this with sodium hydroxide preferably in the presence of a high-boiling amine to form the acetal.  The Specification as open to inspection under Sect. 91 refers in general to polymerization of aliphatic compounds in the presence of a substance containing two olefinic double bonds which is free from conjugated or cross-conjugated double bonds.  This subject-matter does not appear in the Specification as accepted.
Patent GB-284863-A (GB)
Title: Improvements in discharge nozzles for liquids
IPC: B67D7/50
Filed: 1927-02-11
Abstract: 284,863. Macleod, A. W. Feb. 11, 1927. Actuating - mechanism. - A discharge nozzle, more particularly for dispensing petrol, comprises a body A in which is housed an inwardly seated valve B closed by a strong spring G, an operating lever U pivoted at L on a bracket B on the body A bent at an obtuse angle and carrying an antifriction roller T bearing on the stem C of the valve B, a trigger catch Q mounted on the lever to hold it in the valve open position by engaging a notch 0 in a guide bracket N on the body H, and a supporting flange J which may be covered with leather or rubber through the centre of which a discharge nozzle s passes.
Patent GB-607543-A (GB)
Title: Improvements in or relating to mixing machines
IPC: A47J43/046
Filed: 1946-02-07
Abstract: 607,543. Mixing-machines. RACE, T. A. Feb. 7, 1946 No. 3931. [Class 86] In a mixing-machine of the type comprising a detachable container for the materials to be mixed, and having a mixer-drive fitment at the base adapted for ready detachable non-leak drive connection with a motor or hand-driven driving element emerging from a housing, cabinet, or the like, the container 1 is provided with a number of feet 13 which co-operate with clip means by which it can readily be attached to the housing 10. A shaft 4 carrying an agitator 6 passes through a bush 7 secured to the underside of the container 1 and is provided with non-leak sealing collars 2. The lower end of the shaft 4 is slotted to receive radial pins 8 on the driving shaft 9.
Patent GB-627536-A (GB)
Title: Improvements in fluid-pressure gauges
IPC: G01L1/02
Filed: 1947-02-11
Abstract: 627,536. Fluid - pressure dynamometers; indicating-apparatus. SAUNDERS, F. S. Feb. 11, 1947, No. 3936. [Classes 106 (ii) and 106 (iv)] A fluid-pressure gauge for indicating loads un a force-measuring device having a pressure chamber comprises a Bourdon tube rigidly connected to said pressure chamber and indicating means for obtaining magnified readings of very small movements of the Bourdon tube embodying two or more geared pointers and means connecting the free end of the Bourdon tube with said geared pointers. As applied to a weighing machine 1 of the type described in Specifications 564,287 and 617,429, [Group XVIII], the free end of the Bourdon tube 3 carries an extension 4 to which is pivoted a link 5 also pivoted to an adjustable pin 7 on a spindle 8 on which is mounted a toothed quadrant 11. The latter drives a pointer 18 through gears 13, 15, 16 and the pointer shaft drives a second pointer 24, through gears 19, 20, 21, 22, a third pointer 28 being driven through gears 23, 25, 26, 27 from the shaft of the second pointer. The gear ratios between the first pointer and the second and third pointers respectively are ten and one hundred to one. The gauge mechanism is mounted on a casting 10 carried by a plate 31 secured to the body of the weighing machine. One arm of a lever 37 serves as a stop for the extension 4 of the Bourdon tube and may be adjusted, so that at no load the instrument intlicates zero, by a screw 35 mounted in a casing 34 secured to the plate 31 and having a tapered end engaging the other arm of the lever 37. The screw 35 is held in its adjusted position by a spring finger (not shown), which co-operates with a knurled head of the screw.
Patent GB-1195632-A (GB)
Title: Improvements in Numerically Controlled Machine Tools
Inventor: OXENHAM JOHN
IPC: B23Q17/22
Filed: 1968-01-25
Abstract: 1,195,632. Programmed control of machine tools. VERO PRECISION ENG. Ltd. Jan. 21, 1969 [Jan.25, 1968], No. 3953/68. Heading G3N. [Also in Division B3] A numerically controlled machine tool includes a length measuring unit determining the distance between the tip of a selected tool and a fixed datum position, and a control system automatically terminating the drive between the tool and a workpiece when the value in a demand store equals the algebraic sum of the tip distance and the extent of advance of the tool. Electrical control system As shown, Fig.8, a punched tape 46 is read by a reader 47 and the decoded desired position value is fed to a store 45. Alternatively, the desired position value can be set into the store by a manual dial input 48. The desired position value is compared in an arithmetic comparator 52 with the actual position of a tool, held in a store 51, and the difference fed to a drive controller for a motor 53 positioning a machine slide 50. A position transducer 49 is coupled to the machine slide and feeds the actual position value to the store 51 and a transducer 24 is set, by a mechanical gauge, to a position representative of the length of the tool or difference in length froma datum value. The signals from the transducers 24, 49, when digital pulses, are algebraically summed in the store 51 or, when analogue voltages, are compared with corresponding demand signals in the store 45. When the machine is a multi-spindle type an analogue transducer is held in position by engaging a clamp and an auxiliary tool transducer store used for digital pulses which are fed directly to the comparator. It is stated that the output from transducer 24 can be applied as a correcting factor by being added to, or subtracted from, the signal in the demand position store 45. Mechanical gauging system As shown, Fig.4, an arm 13 is mounted on a ram 12 which slides on a fixed rod 27. A pin 28 fixed to the ram, engages a groove 29, in the rod, whereby, when the ram is fully extended the arm 13 is rotated through 90 degrees to a parked position. A rack 11 follows the upward movement of the arm 13, under air-pressure, until a piston 26 engages a stop collar 34. The rack 11 drives a gear 16 coupled to the transducer 24. The ram 12 is raised by hydraulic fluid, entering by a passage 30 from a reservoir pressurized by air. When the air pressure in the reservoir is reduced the ram 12 falls, bringing the rack 11 with it, until the arm 13 engages a tool, not shown. The transducer 24 then indicates the tool dimension which can be stored by pneumatic actuation of a clamp 40. In a modification two racks are employed which are selected by a slotted member. In an alternative arrangement, the rack 11 is held by an air motor with piston 26 at the bottom of the cylinder 19 and when gauging is complete the air pressure is released from the motor and the rack raised by air pressure from beneath until it engages the arm 13.
Patent GB-432731-A (GB)
Title: Improvements relating to steam turbines
IPC: F01K13/02
Filed: 1934-02-07
Abstract: 432,731. Steam turbines. GROSSKRAFTWERK STETTIN AKT.-GES., 1, Franzosischestrasse, and NOLLE, H., 34A, Altdammerstrasse, both in Stettin, Germany. Feb. 7, 1934, No. 4035. [Class 110 (iii)] In a turbine plant in which a condensing reserve turbine is driven at a speed sufficient for the oil delivery of the main oil pump by exhaust steam from another turbine, this steam is introduced in front of the governor valves. When the turbine is put on load this supply of steam may be byepassed to a lower stage or to the condenser.
Patent GB-975044-A (GB)
Title: Improvements in or relating to auger-type cutter-loaders for the mining of minerals
IPC: E21C27/00
Filed: 1963-01-31
Abstract: 975,044. Mineral-mining machines. CHARBONNAGES DE FRANCE. Jan. 31, 1963 [Feb. 2, 1962], No. 4086/63. Heading E1F. Provided on at least one of the opposed extremities of the body of a mineral-mining machine is an auger unit 27, 21 which is so pivotally supported at 19 in a vertically swingable frame 9 rotatably mounted in the body about an axis 7 at right angles to the direction of advance of the machine. When an auger unit is provided at one end only it can pivot through more than 180 degrees so that it can cut at differing heights in either direction of advance of the machine. In the preferred embodiment an auger unit 17, 21 is so mounted at either end of the body of the machine that the leading auger cuts down to floor level whilst the rear auger unit cuts up to roof level during the advance of the machine. Cutter bars 25 and discs 13 are associated with each auger unit for removing those portions of the seam not removed by the auger during the advance of the machine.
Patent GB-1236832-A (GB)
Title: A device for positioning movable elements on a machine tool
Inventor: DAVID ROBERT
IPC: G05B19/23
Filed: 1969-01-24
Abstract: 1,236,832. Selective signalling; non-linear circuits. SOC. ALSACIENNE DE CONSTRUCTIONS ATOMIQUES DE TELECOMMUNICATIONS ET ELECTRONIQUE. 24 Jan., 1969 [26 Jan., 1968], No. 4097/69. Headings G4G and G4H. [Also in Division H3] A rectro-active control system for moving a machine tool member to a desired position, is characterized in that the speed of the member is reduced linearly at a rate which increases in discrete steps as the member passes through points at predetermined distances from the desired position. This is achieved by forming a digital signal representative of the difference between the desired and the actual position of the member, converting this signal into an analogue form which is then amplified in a non- linear amplifier having a characteristic formed of straight line segments. The output of the amplifier, subject to its being below a preselected upper limit, is then used to drive a motor to which a tachometric feed-back signal is also applied. The non-linear amplifier, Fig. 3, comprises an operational amplifier 20 and a feed-back loop including series-connected resistors 22, 23, shunted by Zener diodes 24, 25. In operation as the feed-back current rises the potentials across the resistors 22, 23 rise and the diodes switch. The impedance of the feed-back loop therefore changes abruptly and a characteristic, Fig. 4, consisting of straight line segments results.
Patent GB-193268-A (GB)
Title: Improvements in spades, shovels and forks having wooden handles
IPC: B25G3/28
Filed: 1922-02-11
Abstract: 193,268. Rayner, G. H. T., and Rayner, P. Feb. 11, 1922. Fixing by sockets and tongs; with wedges.- The detachable means for securing shovels, forks, spades, and the like, to tubular metal handles as described in Specifications 160,006 and 163,002,. are employed for attaching the tools to wooden handles. The invention is limited to the fixing means described in the Specifications referred to, which comprise a double metal socket piece as f, formed with a socket F in which the wooden handle is secured, and with a tapered or conical part F<2>. As shown in Fig. 4, a shovel a is fixed in the part F<2> bv a wedge c as described in Specification 160,006. As shown in Fig. 8, the part F<2> receives a tapered tang a' with a flattened end as described in Specification 163,002.
Patent GB-135711-A (GB)
Title: Improved Kinematograph Shutter.
Inventor: DIGGLE WILLIAM
IPC: G03B9/10
Filed: 1919-05-14
Abstract: 135,711. Diggle, W. May 14, 1919. Drawings to Specification. Kinematograph apparatus.-A shutter for a projector has a single masking-blade composed of a sector of gauze material having a second covering of coarse or wider mesh. The covering comprises strips of material which are preferably coloured. Wire, silk, linen, coloured or tinted gelatine, and vulcanized fibre are materials enumerated. The blade is secured to the shutter by an open framework screwed or riveted to the hub, and is coun. terbalanced by a weight of such a size as not to form a flicker blade. The gauze sector, when made of inflammable, material, is enclosed between sheets of mica.