baber/WOPTO huggingface dataset:
Patent GB-618064-A (GB)
Title: Improved carbon-pile electrical regulators
IPC: H02P9/22
Filed: 1946-06-12
Abstract: 618,064. Carbon pile regulators. GENERAL MOTORS CORPORATION. June 12, 1946, No. 17574. Convention date, Aug. 8, 1945. [Class 38 (iv)] An electromagnetically-operated carbon pile regulator is provided with means within the carbon pile for compensating for changes in the thickness of the carbon discs due to increase in temperature, whereby the force applied by the spring to the carbon pile is unaffected by temperature variations of the carbon. The compensating means comprises a unit 70, Fig. 2, located between two of the carbon discs 24, preferably near the outer end of the pile, and consists of two dished metal washers 71, 72 with flat annular surfaces to engage the adjacent carbon discs, and central pockets to receive respectively the head 75 of a rivet and a ring 77 over which the other end is flanged. The annular surfaces of the compensating unit are normally held apart by a bimetallic washer consisting of two dished metal rings 80, 81 having different temperature coefficients of expansion. Increase in pressure between the carbon discs produced by their expansion on becoming heated is taken up by a slight flattening of the bimetallic member due to the increase in temperature, so that the overall length of the pile remains substantially constant. The carbon pile is enclosed in a ceramic tube 23 surrounded by a radiator 21 with cooling fins, and is compressed between an adjusting-screw 28 and a spring assembly consisting of discs 43 of stainless steel which are separated by spacers 44 and have a number of resilient fingers 42 extending radially on to a ring 50 of non- magnetizable metal having good thermal conductivity. The spring discs are secured to the armature 41 by bolts 48, 49 which also hold a terminal plate 38 in position. The armature is damped by an air chamber formed by a disc 53 of magnetic material spaced from a resilient non-magnetic disc 51 by a circumferential ring 52. The movable parts of the regulator are enclosed within a flexible dust-proof housing 58 wherein the effect of the difference in the coefficients of expansion of the refractory tube 23 and radiator 21 is neutralized by providing the narrow open end with an edge 59 which bears against a ring 60 of glass-covered wire located in a recess in the radiator 21, and supporting a flanged inner ring 63 on radial arms 62 extending therefrom to the housing 58, to which their extremities are secured. Two energized coils 18, 19 may be provided, the former serving as either a voltage or current coil in a battery charging system involving several voltage regulators and generators.
Patent GB-221312-A (GB)
Title: Improvements relating to electric switches
IPC: H01H47/00
Filed: 1923-07-06
Abstract: 221,312. Gerschler, M., and Signalapparatefabrik J. Kracker Akt.-Ges. July 6, 1923. Automatic circuit - breakers etc.; electromagnetic switches.- Wastage of current in electric light installations is prevented by providing for e a c h lamp or group of lamps L a switching device comprising push buttons a, b and an electromagnet e, the button a when depressed completing a circuit through the lamps L and the electromagnet e which then attracts the armature h to: close a maintaining circuit through contacts i, o. The lamps L are switched off by depression of the button b which is in the maintaining circuit. By this arrangement, the device cannot be left in the " on " position when the lamp circuit is dead. Also all lamps may be simultaneously extinguished by temporary opening of a main switch and may then be independently switched or again. The contact o may be bevelled so that upon the occurrence of excess current, the arm i slips over it and breaks circuit.
Patent GB-562559-A (GB)
Title: Improvements in milling machines
IPC: B23B31/00
Filed: 1942-12-11
Abstract: 562,559. Milling. MORRIS; Ltd., B. O., and MORRIS, E. M. Dec. 11, 1942, No. 17643. [Class 83 (iii)] A work-holder for securing the shanks of rotary cutters whilst the teeth are being milled comprises a collet 12 for gripping the shank 13 of a cutter 27 and an ejector pin 10 for removing the shank after the cutting operation. The ejector is attached to a plunger 18 provided with a hand wheel 14 screwing at 15 within a sleeve 16 secured to the collet. The cutter 27 is located axially within the collet by an adjustable stop 33 carried by an arm 30 rotatable about a stud 29 so as to be brought into alignment with the cutter which is moved into contact therewith by the ejector 10. The collet is drawn into its bevelled sleeve 11by a nut 16<1> screwing on the collet sleeve 16.
Patent GB-1462275-A (GB)
Title: Method of making a multiplicity of multiple-device semiconductor modules and articles so produced
IPC: H01L21/00
Filed: 1974-04-23
Abstract: 1462275 Semi-conductor devices RCA COR. PORATION 23 April 1974 [30 April 1973] 17705/74 Heading H1K In a method of making a plurality of semiconductor modules each containing a plurality of electrically isolated devices, a wafer 2 of semi-conductor material in which all the devices have been formed and provided with electrodes 6 is mounted on a first temporary substrate and a gridwork of grooves 20 is formed in one face 25 which may extend completely :or only partially through the wafer. The grooves 20 are :filled with resin 24 which is also applied to the face 25. The wafer is then -removed :from the first substrate and mounted by the face 25 on another temporary substrate 26 and the grooves 20, if partially cut, are completed through the wafer. A further gridwork of grooves 30 are cut to extend through the resin layer 24 so dividing the wafer into an array of separate modules each containing four devices, e.g. a mixture of transistors and diodes, which may now :be tested. The units are then released from the 'temporary substrate 26 by dissolving a wax layer 28.
Patent GB-638976-A (GB)
Title: Improvements in irreversible driving device
IPC: B41F17/26
Filed: 1946-06-13
Abstract: 638,976. Locking rods. HOUPLAIN, R. B. June 13, 1946, No. 17710. [Class 80 (iii)] An irreversible transmission mechanism between an operating lever 2 and an actuated shaft 1 comprises a cam member 3 secured for rotation with the shaft 1 but having a certain amount of radial play and spring-pressed jamming balls or rollers 6, 61 between cam slopes 5, 51 on the member 3 and a fixed ring 8. The lever 2 carries a finger 9 which projects between the balls 6, 61 to release any jamming action on operation of the lever in either direction to actuate the shaft 1. Reverse movement from the shaft 1 to the lever 2 is prevented by the balls jamming and thrusting the opposite surface of the cam member 3 against the surface of the ring 8 to provide a frictional resistance against movement as distinct from a purely jamming or wedging action of the balls. In a modified arrangement three pairs of wedging balls are provided adapted on reverse driving to act between the cam and a fixed drum mounted for a certain amount of resilient transverse movement to move the drum into frictional engagement with a flange on the driven shaft. In another modification three pairs of balls act on reverse driving movement to grip a ring member to expand a fixed circular spring into frictional engagement with a drum secured to the driven shaft.
Patent GB-334865-A (GB)
Title: Improvements in or relating to holders for thermionic valves and like devices
IPC: H01R33/76
Filed: 1929-06-10
Abstract: 334,865. Benjamin Electric, Ltd., and Campbell, G. June 10, 1929. Vacuum tubes.-A valve holder has a lower blank or base with openings shaped to receive sockets or contacts, and an upper blank or base with perforations to guide the valve pins into the sockets, the sockets being secured in position when the two blanks are connected together. As shown in Figs. 3 and 4, the lower blank 4 consists of a disc of insulating material such as that known bv the Registered Trade Mark Bakelite, formed with openings 6, 7 to receive sockets 8, Fig. 5, and with perforations 5 for receiving the eyelets. The upper blank 1 consists of a disc with perforations receiving the valve pins and with perforations for eyelets. Each socket consists of a metal strip bent to U-shape and having horizontal parts 8<b>, 8<c> and a terminal plate 8<d>. Longitudinal slots 8g ensure resiliency. The contacts are passed through the openings 6 and the terminals 8d through the openings 7, so that the parts 8<b>, 8<c> lie on the blank 4. The blanks are then secured together by a central eyelet 3, and the holder may be secured by other eyelets to a support 12. A disc 9 may be mounted at the centre to guide the valve pins and a washer may be inserted between the blanks to allow a small movement of the sockets. The socket shown in Fig. 10 is made resilient, by the provision of bent parts 8f. In a holder for a five pin valve a socket is mounted at the centre. Reference has been directed by the Comptroller to Specification 337,245.
Patent GB-1508509-A (GB)
Title: Pressurized dispensing container of the type having an inner flexible container and method for manufacturing same
IPC: B65D83/14
Filed: 1976-04-30
Abstract: 1508509 Pressurized dispensing containers CEBAL 30 April 1976 [7 May 1975 20 Feb 1976] 17773/76 Heading F1R In a pressurized dispenser of the bag type having an inner collapsible product compartment, a sealing gasket is provided between the rim of the outer container and the overlying flange of the bag which is clamped to the rim by the valve mounting cup. The gasket may be preformed or formed in situ on the rim or under the flange of the bag. The bag 2 comprising a collar 7 and flange 8 is first-placed in the outer container 1 which is then formed with a dome 5 and a rolled rim 6 or a domed end member with a rolled rim is secured to the container, the diameter D being greater than the diameter of the collar 7 but less than the outer diameter of the flange 8. Subsequently a gasket 3 is placed in position and the neck and flange are drawn through the diameter D and the gasket 3, the flange folding downwardly until it clears the gasket, Figs. 4 and 5 (not shown). The bag is then lowered so that the flange 8 engages the gasket. The mounting cup 4 is then secured in place. Additional gasket material may be applied to the flange 10 of the cup.
Patent GB-484137-A (GB)
Title: Improvements in amplifier systems for radio receivers
IPC: H03G5/26
Filed: 1937-06-25
Abstract: 484,137. Valve circuits for wireless reception. HAZELTINE CORPORATION. June 25, 1937, No. 17783. Convention date, July 21, 1936. [Class 40 (v)] In order to control the gain and selectivity of an amplifier, two circuits are coupled by valve amplifiers in the forward and backward directions, the latter comprising a valve having a sharp cut-off characteristic and being biassed beyond cut-off for signals of below a predetermined amplitude. The transconductance of the forward coupling largely determines the gain and that of the backward coupling the selectivity of the arrangement. In the embodiment shown two identical controlled couplings 45, 46 are interposed between the frequency changer 41 and detector 47 of a superheterodyne receiver. The circuit 46 comprises tuned input and output circuits 54, 61 respectively, coupled in the forward direction by a screened pentode 63 of the gradual cut-off type and in the backward direction through coils 67, 68 coupled to the circuits 61, 54 respectively by a triode 64 of the sharp cutoff type. The grid biasses of valves 63, 64 and the valves 55, 56 of the circuit 45 are controlled in accordance with signal amplitude by potentials from a potential divider 76, 77, 78 forming the load resistance of a diode rectifier 72 fed through amplifier 69 from the circuit 54. The negative potential across resistance 78 is applied through lead 85 to the forward coupling valves 55 and 63 and the positive potential across resistances 76, 77 through lead 82 to the backward coupling valves 56 and 64. The junction of resistances 76, 77 is connected to the grid of valve 69 to increase the A.V.C. effect as described in Specifications 430,787, 431,121, 431,631, and 443,270. With weak signals the amplification of valves 55, 63 is large and the valves 56, 64 are biassed beyond cut-off by the sources 58, 66 respectively. As the signal amplitude increases, the amplification of valves 55, 63 decreases and at a predetermined point valves 56, 64 become operative to broaden the response curve of the couplings. The output from the frequency changer 41 is reduced when interference occurs on adjacent channels by an A.V.C. system 43 fed through a broadly tuned I.F. amplifier 42. In another embodiment, Fig. 8 (not shown), a single source of control bias is utilized, suitable fixed grid biasses and coupling factors in the variable coupling circuits producing the desired characteristics as regards gain and selectivity. Specifications 442,686 and 483,602 also are referred to.
Patent GB-649174-A (GB)
Title: Pneumatic thread holder for automatic bobbin changing looms
IPC: D03D45/50
Filed: 1948-07-02
Abstract: 649,174. Automatic bobbin changing in looms; pneumatic weft end holders, TRIGGS. W. W. (Crompton & Knowles Loom Works). July 2, 1948, No. 17893. [Class 142(iii)] A holder for the weft ends of reserve bobbins comprises a chamber in which subatmospheric pressure is produced by a pump actuated by the slay. When filling the magazine, the bunch of weft ends is taken under a transparent hinged cover 45, which is thereby opened, and slid under the cover into notches 40, 41 in opposite walls of a rectangular opening 34 in the top of the suction chamber; on release of the weft ends, they are drawn from the notch 41 into the suction chamber and, as each one is cut on bobbin changing, the loose piece of weft is drawn completely into the chamber through the'notch 40. In a modification, the notches 40, 41 are in the cover 45.
Patent GB-1384260-A (GB)
Title: Machine tool control systems
IPC: G05B19/414
Filed: 1972-04-18
Abstract: 1384260 Automatic electric control of machine tools HOUDAILLE INDUSTRIES Inc 18 April 1972 [1 June 1971] 17923/72 Heading G3N A machine tool 2-14 is controlled in response to a coded record, bearing macro-commands, which is read by a high-speed tape reader input means 2-10 and to abbreviated macro-commands, which are capable of generating a series of co-ordinate movements, from a low-speed tape reader 90 forming part of a manually controlled data terminal 2-11. The macro-commands are directly utilized by a computer 2-12 to provide command signals to a control circuit 2-13 for the machine tool. The abbreviated macro-commands are also fed to the computer 12 and utilized in conjunction with a stored macro-language machine tool program to produce command signals for the circuit 2-13. A new macro-command tape is produced, or a previously made tape edited, concurrently with the operation of the machine tool in response to a coded record by the use of a section of the store of the computer 12 with a keyboard 81 of the terminal 2-11. A monitor program is also held in the computer store. It is stated that the computer store may be 'hard-wired'.
Patent GB-424563-A (GB)
Title: An improved method of producing photographic dyestuff images
IPC: G03C7/28
Filed: 1933-06-23
Abstract: 424,563. Colour photography. GASPAR, B., 38, Innsbruckerstrasse, Sch÷neberg, Berlin. June 23, 1933, No. 17963. Convention date, June 23, 1932. [Class 98 (ii)] Photographic dyestuff images are produced in photographic layers containing a silver image and a dyestuff by converting the silver image into a chemical compound which locally prevents or retards the action of a subsequently applied dyestuff destroying bath. As a modification, the silver image layer may contain a dyestuff-forming substance which is converted to a dyestuff simultaneously with the conversion of the silver image into the chemical resist. In an example, a dyed silver image layer is bleached in an aqueous bath of copper sulphate and hydrochloric acid, producing locally a reducing compound, and the dyestuff at the unprotected portions is then destroyed by oxidation, e.g. by permanganate of potash. Alternatively, the silver image may be converted to silver ferrocyanide or toned with selenium &c. In a further example, the silver image is converted to an oxidizing compound, e.g. to lead chromate by treatment with potassium ferricyanide, lead nitrate and potassium chromate, or to manganese peroxide by treatment with a manganese salt, the dyestuff being subsequently destroyed by a powerful reducing agent, e.g. sodium hydrosulphite. In an example involving dyestuff-forming substances, a silver image layer containing a leuco body is treated with copper halide, ferricyanide of potassium &c., to convert the leuco body into the dyestuff and simultaneously form the chemical resist. The invention is applicable to supports coated on both sides or provided with superposed layers ; also to multi-colour particle emulsions. Specifications 395,718 and 397,159 are referred to.
Patent GB-897525-A (GB)
Title: Improvements in or relating to alkyd resins
IPC: C09D167/00
Filed: 1958-06-05
Abstract: An alkyd resin, useful in baking enamels, is made by heating a mixture of (a) a monoester of a benzene tricarboxylic acid or an anhydride thereof and a monohydric paraffinic alcohol with (b) a diol.  The monohydric alcohol may be one containing 1-30 carbon atoms, including oxo alcohols.  The diol may be ethylene-, propylene-, 1:3-butylene- or neopentylene-glycol; a polyethylene-, polypropylene or polybutylene-glycol (e.g. di-, tri- or tetraethylene glycol and the corresponding propylene and butylene glycols); the dipropylene glycol ether of bis-phenol A (possibly in admixture with diethylene glycol); the bis-glycol ester of isophthalic acid; hydroquinone or octyl hydroquinone.  To form a baking enamel, the alkyd resin is dissolved in an organic solvent (e.g. benzene, toluene, xylene, naphtha, mineral spirits, acetone, cyclohexane, chlorobenzene or dichloroethyl ether) and, if desired, a urea-formaldehyde or melamine-formaldehyde condensate added.ALSO:Mono-esters of benzene tricarboxylic acids or anhydrides thereof and monohydric paraffinic alcohols are made by heating 1 mol of the acid or its anhydride with 1.0-1.2 mols of the alcohol at 200 DEG F.-350 DEG F.  Specified acids are trimellitic, trimesic and hemimellitic acids.  Specified alcohols are methyl, ethyl and the various propyl, butyl, amyl and hexyl alcohols; octyl, nonyl, tridecyl, cetyl, ceryl (C26) and melissyl (C3c) alcohols; oxo alcohols, e.g. commercial isooctyl, nonyl, decyl and tridecyl alcohols; and mixtures of isooctyl and n-amyl or n-butyl alcohols. The esters are polyesterified with dihydric alcohols to give alkyd resins (see Group IV(a)).
Patent GB-727749-A (GB)
Title: Improvements in or relating to the anodic treatment of aluminium and aluminium alloys
Inventor: DOYLE WILLIAM MICHAEL
IPC: C25D11/04
Filed: 1952-07-16
Abstract: 727,749. Anodic treatment of aluminium and its alloys. HIGH DUTY ALLOYS, Ltd. June 4, 1953 [July 16, 1952], No. 17999/52. Class 41. In a process for anodizing aluminium and aluminium alloys the voltage across the bath is increased either progressively or at intervals to maintain the power input (in watts applied to the bath) substantially constant throughout. The voltage is initially 18 to 20 volts and is gradually increased until the power input reaches the desired value which may be between 200 and 4000 watts per square foot of surface to be treated, after which the voltage is gradually increased as the current falls to maintain the product of the current and voltage constant. The electrolyte is agitated by a mechanical stirrer or by air bubbles; compressed air may be passed through porous ceramic pots covering the entire base of the bath. The surface supporting wires are protected by coating with high-melting-point wax or other insulating material. The electrolyte may be 2.5 to 30 per cent sulphuric acid in water and may contain up to 20 per cent of glycerol or other polyhydric alcohol or triethanolamine. The bath temperature may vary between - 5‹ and +20‹ C. The coatings obtained may be sealed in hot water, potassium dichromate solution, waxes, oils or greases, such as lanoline, and may be dyed.
Patent GB-542796-A (GB)
Title: Device for securing milling and like rotary tools in working spindles
IPC: B23B31/113
Filed: 1940-12-23
Abstract: 542,796. Sockets. MASCHINENFABRIK OERLIKON. Dec. 23, 1940, No. 18055. Convention date, Dec. 5, 1939. [Class 83 (iii)] To secure rotary tools such as milling-cutters in rotary spindles,. the tool 1 is formed with a conical shank 5, and the shank is pressed tightly into a tapered bore by means of a bayonet-joint connection comprising a longitudinal groove 3 in the cone leading to a helical groove 4 into which is received a pin 7 in the socket 2. The groove 4 can be arranged so as to maintain a tight connection with right hand or left hand cutters. In a modification the grooves are formed in the socket and the pins of the bayonet joint on the conical shank, and one longitudinal groove connects with two helical grooves of opposite threads for right-hand or left-hand cutters.
Patent GB-791738-A (GB)
Title: Improvements relating to the manufacture of wire grids
Inventor: VELZER HARRY LELAND VAN
IPC: H01J19/00
Filed: 1955-06-22
Abstract: 791,738. Making grids for cathode-ray tubes. GENERAL ELECTRIC CO. June 22, 1955, No. 18092/55. Class 83 (2). A process of bonding grid wires to a frame comprises arranging the grid wires at spaced intervals on the frame structure, with a tensile force applied to each of the grid wires individually, applying a ceramic high-temperature cement to contiguous portions of wires and frame, drying the cement to hardness and removing the initial tensile force from the wire. To make a grid mask for a colour television cathode-ray tube, wires 5, e.g. of stainless steel or tungsten, are stretched, e.g. by weights 13, over supports 2, 3 of a thermal compensating grid frame 1 of the type described in Specification 788,189, [Group XL (a)], and having compound thermal compensating side members 4. The supports 2, 3 may be rough machined to increase friction and the surfaces degreased. A layer 10 of high-temperature ceramic cement, e.g. silica cement, is applied to the wires in the region of the supports 2, 3 and allowed to harden. The tension in the wires is then removed and the wires cut at 11. The cement may be heated at 400-490‹ C. before removing the tension.
Patent GB-1107902-A (GB)
Title: Well apparatus
IPC: E21B33/043
Filed: 1965-04-29
Abstract: 1,107,902. Wells &c. CAMERON IRON WORKS Inc. 29 April, 1965 [7 May, 1964], No. 18133/65. Heading E1F. In a sub-aqueous wellhead comprising a casing head 15, a hanger 25 supporting casing 25a, and flow passages 28 connecting the annulus surrounding the casing to the casing head bore above the hanger, an assembly 36 for closing the passages includes a part 39 releasably connected to a running tool 37, a part 38 releasably connected to the hanger, a seal ring 50, and a pin 45 shearable to permit relative movement of the parts to expand the ring into engagement with the bore. The running tool carries packing 53 which permits pressure to be applied to the annulus between the casing and the tool supporting string 37a to test the seal ring. A split spring 54 permits the tool to withdraw the assembly if the seal ring is ineffective. A hanger (63a) (Fig. 7 not shown) seating on a seat (64) on the assembly supports a casing (63) a seal assembly (65) is fitted to close passages through the hanger (63a) and the well is completed by running tubing and adding a Christmas tree. Slips (67) are located immediately below the seal (65c) of the assembly (65) for holding the assemblies and casing hangers down within the casing head. The casing head has webs (18) (Fig. I not shown) carrying angles (16) formed with bayonet slots engaging pins (17) protruding from a conductor pipe (10).