baber/WOPTO huggingface dataset:
Patent GB-983683-A (GB)
Title: Powder feeding apparatus
Inventor: ARMSBY BERNARD FRANK
IPC: B65G53/00
Filed: 1963-09-25
Abstract: 983,683. Blasting. STANDARD TELEPHONES & CABLES Ltd. Sept. 25, 1963, No. 37712/63. Heading B3D. [Also in Division B8] Abrasive powder for polishing a semi-conductor is blown out from chamber 10 by a jet of air introduced at 9 so that the powder emerges through outlet 11. The powder is fed into chamber 10 from container 18, the powder passing therefrom through diaphragm 16 when the latter is vibrated by vibrator 4. The pressure of air in chamber 10 is balanced by pressure of air introduced into container 18 at 22, the air being introduced at 2 and flowing through jet 9 to convey the powder from chamber 10 through outlet 11 whilst the rest of the air passes through pipe 22 to produce air pressure in container 18. Vibrator 4 in addition to vibrating diaphragm 16 also vibrates plate 14 to produce an agitation of material in chamber 10 to facilitate its discharge by air. A jet nozzle may be a tube, e.g. of brass, having a tapered end into which is punch fitted an artificial jewel watch bearing having the required fine hole therethrough.
Patent GB-523453-A (GB)
Title: Improvements in or relating to the manufacture of hats
IPC: A42C1/02
Filed: 1938-12-29
Abstract: 523,453. Felt hat forming machines. TENNANT, W. J. (Birdsall, G. T.). Dec. 29, 1938, No. 37774. [Class 63] In an automatic hat body forming machine, a plurality of forming cones each have an independent support movable to carry the cones into and out of a fur depositing station. Each cone has its own wetting station, the cone being, after wetting, inverted, for the removal of the body. The fur-depositing station has doors which open automatically when the supports approach them. A pair of forming cones 20,are each connected by a conduit 62 to a vertical suction pipe about which the cones can swing, arms 23a secured to the conduits being connected by links 55 to a crank 53 moving with a gear wheel 52 oscillated by a rack 51 carried by pistons in cylinders 43, 44 under the control of a valve 45 operated by solenoids 57, 58. Each of the conduits 62 contains a throttle valve 64 urged to the open position by a spring 65 and closed when a solenoid 69 is energized. A fur distributing chamber 90 is provided with pairs of doors 92, 93 which are opened when the conduit of the cone within the chamber approaches them. Each conduit carries a contact block 102 co-operating with a roll 101 carried by one of a pair of intermeshing gear-wheels urged in a direction to open the doors by springs 100. The gear wheels actuate linkwork which opens and shuts the doors. The cone which is swung out of the furdepositing chamber moves into a curved arm 70 which engages a groove in the cone, a latch 79, urged to operative position by a spring, retaining the'cone in the curve. In this position the hat body is sprayed with boiling water from a nozzle 66. Soon after the initial operation of the spray, the valve 64 is moved to decrease the suction on the cone and allow the spray to compact the fur. The cone is then elevated by a piston 81 in a cylinder supplied with compressed air by a valve actuated by a solenoid 84. As the piston, rises, a gear wheel 77 engages a rack and tips the cone to invert it. A ring 85, having lost motion connection with the cone, frees the hat body, which falls from the cone. Counterweights 78 return the cone after the hat body has fallen. The cones are rotated, as usual, while the hat bodies are being formed and wetted. The various valves are operated by solenoids controlled by a constantly driven rotary switch, so that the working of the machine is completely automatic.
Patent GB-1494170-A (GB)
Title: Process for degrading polyurethane waste into activated polyhydroxyl compounds
IPC: C08J11/28
Filed: 1976-09-14
Abstract: 1494170 Degrading polyurethanes BAYER AG 14 Sept 1976 [20 Sept 1975] 37996/76 Heading C3R Polyurethanes, e.g. in the form of foam waste or elastomer granules, are degraded into reuseable polyhydroxyl compounds by reaction at 150‹ C. to 250‹ C. with a lactam melt or an associate between a lactam and an adductformer containing at least two active hydrogen atoms. The preferred lactam is #-caprolactam and is optionally used as an associate with ethylene glycol, diethylene glycol, diethanolamine, triethanolamine or N-methyl diethanolamine. The lactam may be partly polymerized into a polyamide by carrying out the reaction at 200‹ C. to 250‹ C. and/or in the presence of a basic catalyst. The polyhydroxyl compounds so produced may be reacted with polyisocyanates to form polyurethanes.
Patent GB-957629-A (GB)
Title: Acetals of allyl alcohol and polymers and copolymers thereof
IPC: C08F20/00
Filed: 1961-10-24
Abstract: The invention comprises compounds of formula: <FORM:0957629/C2/1> where a and b are CH2=CH-CH2-O-, and H, or combined to form O, the compounds being obtained by acetalization of an at least stoichiometric amount of allyl alcohol with glyoxal or glyoxylic acid. The reaction is preferably effected by heating the reactants, a substantial excess of allyl alcohol being used, in the presence of an acid catalyst; whilst removing water by azeotropic distillation. In examples glyoxal-tetra-allylacetal is made from glyoxal and the allylester-diallylacetal of glyoxylic acid from glyoxylic acid, the catalyst being sulphuric acid and the solvent benzene.  The products may be polymerized or used as copolymers (see Divisions C3 and D1).ALSO:Compounds of formula: <FORM:0957629/C3/1> where a and b are CH2=CH-CH2-O- and H, or together represent an oxygen radicle, are made by acetalising allyl alcohol with glyoxal or glyoxylic acid, and polymerized or copolymerised. Polymerization or copolymerization may be effected at room temperature, or above, and with or without catalysts. Polymer formation may be carried out in bulk, in solution or in emulsion and oxygen may be present. Control over the extent of polymerisation may be obtained because the allyl radicles take part in the polymerisation successively and any free double bonds remaining after the initial stage may, by more energetic treatment e.g. at a higher temperature or by the use of a catalyst, be cross-linked. Organic peroxides and hydroperoxides are preferred catalysts e.g. tertiary butyl, lauryl, benzoyl and cyclohexanone peroxides, tertiary butyl perbenzoate and tertiary butyl hydroperoxide. Numerous examples are provided of the preparation of various conventional methods, of polymers and copolymers from glyoxal-tetraallylacetal and allyl ester-diallylacetal of glyoxylic acid.  Substances used for copolymer formation are ethyl, methyl and butyl acrylates and methacrylates and vinyl acetate and styrene.  The products are used in film forming compositions e.g. in paints, varnishes and lacquers.  Stoving may be required. Tin tetrachloride and aqueous ammonia and potassium persulphates are other polymerisation catalysts used in the examples the persulphates illustrating preparations by emulsion copolymerisation.ALSO:Cotton fabrics are stiffened by the formation thereon of a polymer or copolymer of a compound of formula <FORM:0957629/D1-D2/1> where a and b are -O-CH2-CH = CH2 and H, or together with the C atom to which they are attached from the C = O radicle.  In examples cotton is impregnated with aqueous emulsions comprising, as catalyst, potassium, persulphate, and glyoxal-tetra-allylacetal and 6 sulphonated lauryl alcohol, a condensation product of oleyl alcohol and ethylene oxide, ethyl acrylate and methyl methacrylate and 7 ethyl acrylate, methyl methacrylate and acrylamide, with or without formal, the material being squeezed, dried at 80 DEG C., and stored at 130 DEG C.
Patent GB-993513-A (GB)
Title: Improvements in data transmission systems
IPC: G06F5/06
Filed: 1963-09-27
Abstract: 993,513. Telegraphy. STANDARD TELEPHONES & CABLES Ltd. Sept. 27, 1963 [Oct. 5, 1962], No. 38195/63. Heading H4P. [Also in Division G4] The invention provides a data storage equipment used in a telegraph system in which errors are corrected by repetition of blocks of data. The equipment comprises a memory M, transfer register RT and gates p1-p3. M contains one or more blocks of n bits which have been received on input ent At time ta the oldest bit in M is passed to RT When a new bit arrives on ent, at tb it passes to RT, the bit already there being destroyed At tc the new bit state passes to output st, and at td the new bit is read in to M. As applied to the transmitter of a telegraph system, Fig 2 (not shown), the memory comprises a ferrite core matrix storing two data blocks and has means for reading out the stored bits in the correct order. The transfer register is a toggle, a further toggle being set by the register and providing an output to the transmission arrangement. When a repetition is requested data from ent is blocked so that the oldest bit is not destroyed but is transmitted and also passed back to the memory. Transmission from the memory takes place as long as the requesting signal is extant. At the receiver, Fig 3 (not shown), a somewhat similar arrangement is used. The memory stores only one block, which is tested for errors before being passed to utilization equipment or blocked therefrom if an error is detected.
Patent GB-348200-A (GB)
Title: Improvements in opening and closing devices for fanlight windows and the like
IPC: F23N5/24
Filed: 1929-12-14
Abstract: 348,200. Fanlight regulators. HOPKINS, C. Y. and CARTLAND & SON, Ltd., J., Armoury Close, Bordesley Green, Birmingham. Dec. 14, 1929, No. 38332. [Class 20 (iii).] Opening and closing mechan. ism for fanlights &c., of the kind comprising a pulley nut mounted in a bracket on the window frame and engaging with a transverse screw pivoted to the window, is adaptable for right or left-hand fixing to the window frame without complete disengagement oi any of the parts. As shown, the pulley nut h is housed in a sheath i which is pivotally mounted in a stirrup-like yoke k. The upper portion of the yoke is forked and the arms e, e<1> thereof fit over an extension c of a bracket which is secured to the window frame. The yoke is secured to the bracket in any required position by a screw g which passes through two clamp plates f, f<1> and through an elongated slot d in the extension c. The device may be adapted for right or left-band fixing by slackening the screw g, sliding the yoke &c to the outer end of the slot d and then rotating the bracket relatively to the yoke to the desired position. The elongated slot also allows a limited adjustment of the yoke relative to the bracket whereby the device is capable of being fitted to various types of window constructions.
Patent GB-875381-A (GB)
Title: Improvements relating to electronic switching circuits
Inventor: BIBB DOUGLAS MCKINLEY
IPC: H03K19/084
Filed: 1958-11-27
Abstract: 875,381. Transistor switching circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 26, 1959 [Nov. 27, 1958], No. 38351/58. Class 40(6) In a logical system in which switching pulses are passed in a sequence of time slots through transistor switching circuits, the discharge of internal capacitances of a transistor switch, for example, T1, is speeded up during the transient switching off period by applying discharge pulses to the transistor from a low impedance source 5. Transistor switches, e.g. T1, T2 in common collector circuit, are connected together by way of AND gates D1 and OR gates D2. The low impedance pulse generator 5 is connected to the base circuits by way of diodes D3, D4, to provide large positive-going pulses which switch off the transistors rapidly at the end of each conducting period.
Patent GB-1440545-A (GB)
Title: Semiconductor device including a chip bonded to a metal surface
IPC: H01L21/52
Filed: 1974-09-03
Abstract: 1440545 Soldering RCA CORPORATION 3 Sept 1974 [12 Sept 1973] 38428/74 Heading B3R A semi-conductor device 10 comprises a semi-conductor chip 16 having a flat surface joined to a flat surface, of a metal member 14, having non-intersecting grooves 28 extending beyond the chip, the grooves being parallel and spaced by 10-40 mils and having a depth of 1-3 mils. The header 12, of a power transistor 10, formed of cold rolled steel is provided with parallel V-shaped grooves 24 on its upper flat surface by pressing with a die or etching and the lower flat surface of a copper heat sink 14 is arranged on the header with an interposed preform of silver copper alloy (72% Ag, 28% Cu) and the assembly is heated to 850 C. to melt the preform. The upper surface of the heat sink is provided with V-shaped grooves 28 by pressing with a die, a coating of nickel 20 on the header and 32 on the heat sink being provided on the assembly. The semi-conductor chip 16 comprises a silicon wafer 34 having electrodes 38, 40 on its upper surface and an electroless coating 42 of nickel on its lower surface, with a coating of solder (5% Sn, 95% Pb) thereon. The chip is placed on the heat sink and the temperature is raised to 400 C. to melt the solder coating 46. The grooves may be U or rectangular in shape.
Patent GB-944991-A (GB)
Title: Improvements in or relating to tedders
IPC: A01D78/00
Filed: 1960-11-09
Abstract: The subject matter of this Specification is identical with that of Specification 944,992, but the claims differ.
Patent GB-1023607-A (GB)
Title: Improvements in or relating to apparatus for making zipper fasteners and process formaking such fasteners
Inventor: FIRING OSBORNE
IPC: B21D53/50
Filed: 1964-09-22
Abstract: 1,023,607. Making sliding-clasp fasteners; shearing; stamping. SCOVILL MANUFACTURING CO. Sept. 22, 1964, No. 38695/64. Headings B3A, B3Q and B3W. An apparatus for making sliding clasp fasteners from flat wire stock comprises a forming punch and die for forming fastener element heads consisting of recesses on one side of the wire and projections on the other side, shearing tools for cutting fastener elements from the end of the wire, each containing one of the projections and recesses, the shearing tools being spaced both laterally and longitudinally from the forming punch and die with respect to the direction of movement of the wire, whereby the wire after passing through the forming tools makes at least one complete loop and passes through the shearing tools in the same direction and with the element heads oriented in the same way, and wire feeding means operating simultaneously on a section of wire following the forming tools and another section preceding the shearing tools for pulling a length of wire from the forming tools and pushing an identical length of wire into the shearing tools. A strip S passes between a fixed punch 7 and a moving die 8 which form recesses 9 and projections 10. The strip is drawn through the tools by a feed roller 11 which has longitudinal grooves 12 to accommodate the projections 10 and which is rotated intermittently by a pawl and ratchet 18, 19. A pressure roller 20 holds the strip against the roller 11. The strip then forms a loop and re-enters the rolls which push it between a stationary shearing tool 14 and a movable shearing tool 13. The movable tools 8 and 13 are mounted on a common head 16 which is reciprocated by a cam. The shearing tools, Fig. 6 (not shown) have V-shaped portions 22 projecting toward each other on the upper tool 14 and corresponding recesses in the lower tool which form notches 21 in the strip prior to severing. The element itself is sheared by the projection 24 co-operating with the groove 25. A spring-loaded hold-down 26 bears on the strip and returns it to its original position after the shearing stroke, since the strip is lifted by the lower tool. There is a greater than normal clearance between the shearing edges 24 and 25, and a pilot 28 on the tool 14 which results in breaking of the metal about halfway through its thickness along an angle as indicated by the reference 29, Fig. 4 (not shown). This angling is stated to give the fastener a smoother action. The loop formed in the strip between its two passes through the feed rolls accommodates lengthening of the strip due to the action of the forming tools and reduces wear on the shearing tools due to the strip rubbing.
Patent GB-1113616-A (GB)
Title: Solid state power rectifier assembly
IPC: B60L50/12
Filed: 1965-09-10
Abstract: 1,113,616. Rectifier assemblies; dynamo-electric machines. GENERAL MOTORS CORPORATION. 10 Sept., 1965 [4 Nov., 1964], No. 38697/65. Headings H2A and H2F. A solid-state power rectifier assembly comprises two metal heat sinks each serving as a bus-bar for a plurality of semi-conductor diodes mounted thereon, and three insulator plates one of which is between the heat sinks, an electrical conductor passing through openings in the insulators and connected to pairs of diodes of opposite polarity. Fig. 3 shows a pair of such assemblies 44, 46 on a panel 36 for supplying D.C. to the traction motors of a locomotive from a three-phase generator 4 using the circuit of Specification 1,076,101 (Fig. 1, not shown). The aluminium heat sinks 58, 60 have cooling fins 62 along their entire length and are separated by a central insulator 64. The outer insulators 48, 50 are secured to the panel 36 by fasteners 52, 54 (Fig. 5). Silicon junction diodes 70 are mounted in holes of the heat sinks by means of studs 70a and look nuts 74 having spring-washer sections 76 engaging retaining means 78 on the heat sink. Alternatively, the studs could be threaded into holes in the heat sink. In either method any individual diode can easily be removed. The cathodes of diodes 70 are connected to the heat sink while the anodes are joined to lead 82. The other heat sink 60 contains the anodes of diodes 84 whose cathodes are joined to lead 86. These leads are attached to terminals 92, 102 on hexagonal studs 88 which also carry fuses 94 whose other ends are supported by screws 96 on insulators 56. The phase conductors from the stator of the three-phase generator are joined to the screws 96, and the D.C. output is taken from the bus-bars via projections 58a, 60a (Fig. 3). When the assembly is used in the system of Specification 1,113,617, instead of that of Specification 1,076,101, connection is made via bus-bars 134 (Fig. 5). For use with a traction motor the assembly is mounted adjacent the end of the three-phase generator (Fig. 2) whose stator 34 comprises ten three-phase Y-connected windings supplying voltages in phase with one another. The panel 36 forms the end frame of the generator and the diode assembly 46 is mounted in a housing 42 on this panel. Forced air circulation cools the rectifiers and the exhaust cools the stator 34 and the field winding 12 of the generator.
Patent GB-1018653-A (GB)
Title: Apparatus and improved process for production of polycarbonamides
IPC: B01J6/00
Filed: 1963-10-01
Abstract: A process for making a linear high molecular weight polycarbonamide comprises: (a) providing essentially solvent-free polymer forming reactants in liquid state; (b) mixing said solvent free reactants in substantially equal volumetric proportions under conditions of high pressure and high rheological turbulence to provide an homogeneous mixture thereof; (c) raising the temperature of the reactants to polycarbonamide forming temperature while at said high pressure and turbulence; (d) reducing the pressure of the mixture and separating liquid components thereof from vapour components; and (d) completing the polymerization of said liquid components.  An apparatus suitable for effecting the process is described and claimed (see Division B1). The Specification exemplifies the preparation of polyhexamethylene adipamide.
Patent GB-1457997-A (GB)
Title: Magic hat tickets for use in lotteries gaming and/or amusement
IPC: A63J21/00
Filed: 1975-09-23
Abstract: 1457997 Magic hat MARVIN GLASS & ASSOCIATES 23 Sept 1975 [22 Jan 1975] 39012/75 Heading A6H A magic hat comprises a cylindrical housing and an inner portion extending longitudinally along part of the inside of the housing to form a hidden cavity. The cavity can contain a wand 28, Fig. 7, which is released by pressing a button 146 hidden by the hat-band thus pushing the Wand to open a door 114. The cavity also contains a flexible water container which can be squeezed to squirt water from the crown of the hat. The wand is telescopic and is grooved longitudinally to enable a ball to run along it. A hinged-lid in the base of the hat conceals compartments for a pack of cards and a flag. Water poured into the hat enters a compartment in the base which retains the water when the hat is inverted.
Patent GB-894055-A (GB)
Title: An improved plate clamping device for rotary printing machines
IPC: B41F27/10
Filed: 1958-12-08
Abstract: 894,055. Printing surfaces. MASCHINENFABRIK AUGSBURG-NURNBERG A.G. Dec. 8, 1958 [Dec. 7, 1957], No. 39485/58. Class 100(2) In a plate clamping device for a rotary printing machine of the kind in which the plates 2 are clamped to the plate cylinder I by means of pivotable hooks engaging in recesses on the inner surface of the plates, the hooks 3 are cam-actuated to engage the plate recesses 5 by means of a clamping spindle 6 which is rotatably supported, independently of the hooks, in the cylinder 1. The spindles 6 extend longitudinally in the cylinder 1 and have D-shaped cross section, the flat portion of which allows the hooks 3 to be released from plate engaging position. The spindles 6 are held in either of their two positions by spring loaded detents. Each hook 3 is provided with a cylindrical head 8 disposed in corresponding recesses in the cylinder 1 and in a pressure bar 13 fixed to the cylinder 1. Similarly mounted trailing edge hooks 4 are subjected to pressure from springs 7 by way of levers 15. Alternatively, the hooks 4 may be operated by a transverse bar 9 and a lever 15 pressed to a single spring 7, or may be acted upon directly by compression springs.
Patent GB-342478-A (GB)
Title: Improvements in apparatus for introducing liquid fuel into internal combustion engines
IPC: F02M61/02
Filed: 1929-12-27
Abstract: 342,478. Nozzles for sprayers. HESSELMAN, K. J. E., Storangen, Saltsjo, Sweden. Dec. 27, 1929, No. 39577. Convention date, Jan. 2. [Class 69 (iii).] In spraying nozzles which impart a whirling motion to liquid fuel comprising a sleeve and plug, the sleeve has a hemispherical conical or similar end containing the discharge orifices, and the plug has cylindrical borings in register with the discharge orifices. The fuel supply channels enter the cylindrical borings eccentrically. Radial discharge orifices 2 are provided in the hemispherical end of the sleeve 1. Cylindrical borings 4, coaxial with the orifices 2, and of two to four times their diameter, are formed in the plug. Fuel supply grooves 5 in the plug enter the borings 4 eccentrically. The fuel entering the borings 4 whirls intensely and effects the atomization of the discharge. In a modification, a common fuel supply passage is provided for two discharge orifices.