baber/WOPTO huggingface dataset:
Patent GB-1374032-A (GB)
Title: Apparatus for manufacturing a tubular body by means of hydrostatic  extrusion
IPC: B21C23/00
Filed: 1972-03-14
Abstract: 1374032 Extruding ALLMANNA SVENSKA ELEKTRISKA AB 14 March 1972 [15 March 1971] 11737/72 Heading B3P A hydrostatic extrusion press for producing tubes comprises a pressure cylinder with a die 2 at one end and a mandrel 6 whose rear end is outwardly tapered so that during the latter part  of extrusion the bore of the tube is enlarged, the mandrel being pushed with the billet 7 by a hard metal plate 12 with a tapered periphery 13 to fit the die. The enlarged bore thus causes the trailing end of the tube to be spaced from the  mandrel as it moves over it so that the tube does not become a tight fit on the mandrel as it cools.  The plate 12 may be separate or integral with the mandrel 6. The hydrostatic fluid pressure in the cylinder or in the hydraulic drive for a pressure generating plunger 10 of the cylinder is sensed by a device 15 with an optical or acoustic alarm 17. The device 15 may stop the motors of the  pumps of the hydraulic drive.
Patent GB-585602-A (GB)
Title: Improvements in or relating to sheet-bending apparatus
IPC: B31B3/52
Filed: 1944-06-20
Abstract: In a sheet-bending apparatus for forming box-like containers from a blank of sheet plastic or other material (see Group XVI), the blank, Fig. 4, is located on the face of a former 11, Fig. 2, and the sides 53, 54, 55 of the blank are bent by pressure-members falling under the action of gravity after the application of adhesive to the flaps. The adhesive is applied by four embossed rollers 68 freely and resiliently mounted in arms 66 the upper ends of which are pivoted to the carrier of the central pressure-member 29.  The rollers 68, on the downward movement of the member 29, contact the blank and roll outwardly thereover to apply adhesive on predetermined portions of the flaps, the arms 66 moving in <PICT:0585602/III/1> <PICT:0585602/III/2> guides 69 having inner stops.  The rollers are loaded to ensure their rotation to an initial position after rolling over the blank.  The sides of the blank are supported during the adhesive-applying operation by a pair of pivoted plates 61 retained in position against the action of weighted cords 62 by detents 64 which are released by abutments on the rollers 68 on completion of the application of adhesive.
Patent GB-1213104-A (GB)
Title: Improvements in or relating to semiconductor devices
IPC: H01L27/07
Filed: 1969-03-05
Abstract: 1,213,104. Integrated circuits. FAIRCHILD CAMERA & INSTRUMENT CORP. 5 March, 1969 [1 April, 1968], No. 11746/69. Heading H1K. An integrated circuit has at least one isolated pocket containing at least one semi-conductor device and having a plurality of separate contacts to the bulk material of the pocket, the effective area of at least one of these contacts being substantially different from that of the others to provide signal paths to the bulk of substantially different resistance values. The effective area of the contacts may be made different by merely making enhanced conductivity contact regions which differ in area or, alternatively, field-effect pinch-off may be used to restrict the cross-sectional area of the path leading to the enhanced conductivity contact regions. The NPN planar transistor shown has three contacts to the collector bulk. The enhanced conductivity region associated with one of these is of larger area than the other two. Of these other two 40, 46, the current path to one, 40, is restricted by pinch-off from the surrounding base region 42, and to the other, by a separate region 47. The embodiments of Figs. 1 and 2 (not shown) have respectively single and double emitter planar transistors each with two collector contacts (25, 27), one or each side of the base region. The enhanced conductivity regions associated with the collector contacts differ in area. In operation power is fed to one collector contact and an output signal taken from the other. As shown, all the devices have semi-conductor substrates, but similar devices could have conductive or insulating (glass) substrates. Isolation, shown as junction isolation, could instead be provided by grooves which are unfilled or which are filled with an insulator (SiO  2 ).
Patent GB-980432-A (GB)
Title: Improvements in or relating to apparatus adapted for use in handling adhesive
IPC: B21D51/46
Filed: 1961-04-04
Abstract: 980,432. Coating apparatus. BOSTIK Ltd. April 4, 1961 [April 7, 1960], No. 11889/61. Heading B2B. An apparatus for applying molten thermoplastic adhesive to, e.g., bottle caps, comprises a dispensing device, a supplying device, a passage leading from the supplying device to the dispensing device, the supplying device being adapted to melt the adhesive and supply it along the passage, a cavity which communicates with the passage, the volume of which cavity is variable and the cavity being filled with adhesive when the apparatus is in use, means urged to reduce the volume of the cavity and a sensing device movable between a first condition, in which when the apparatus is in use the supplying device operates to supply molten adhesive along the passage to the dispensing device, and a second condition, in which the supply device does not so operate, and which sensing device consequent upon the volume of the cavity having increased to a certain upper value when the apparatus is in use moves from its first to second condition. As shown, a rod of thermoplastic material R is fed by rollers 20, 22 into supplying device 10 in which rod R is melted and delivered under pressure through passages 56, in which there is one-way spring-loaded valve 58 operated by the pressure of the adhesive, 61, 62 and 64 into dispensing device 12. In communication with passage 62 is flow control device 14 responsive to the pressure of adhesive, comprising cylinder 8, movable piston 80 and weight W, and a sensing device comprising microswitch S actuating and deactuating plungers P1 and P2, and actuating and deactuating arms 82, 84 fixed to piston 80. When the supply device 10 is operating, molten adhesive is being fed to the dispensing device at a slightly greater rate than it is being dispensed, so that the pressure of the adhesive pushes piston 80 and weight W until they reach a position at which the deactuating arm 84 contacts plunger P2 and causes the supply device 10 to cease operating. The piston 80 and weight W now exert pressure on the adhesive in the cylinder 8 and gradually reduce the volume of the cavity till the actuating arm 82 contacts plunger P1, which results in the supply device 10 operating again. The dispensing device comprises a body portion 90 mounted for slidable movement in the bore 93. In communication with passage 64 is annular chamber 100 which communicates with chamber 105 at the end of which is orifice 106. In chamber 105 is valve 111 which is urged into the closed position by spring 118 and into open position when stem 130 contacts the article to be coated. The dispensing device may be reciprocated in synchronism with conveyer 142 which carries bottle caps BC. Specification 831,084 is referred to.
Patent GB-714460-A (GB)
Title: Improvements in and relating to the preparation of vegetables
IPC: A47J17/18
Filed: 1952-05-12
Abstract: 714,460. Peeling &c. vegetables. LEYLAND, F. May 7, 1953 [May 12, 1952], No. 11902/52. Class 28(2) A tool connected to a rotary head 5 has three vegetable-operating sections 1, 2 and 3, for eye removing, scraping and peeling. Section 1 may be a separate pyramid or only an extension of the rasp-like tapered scraping section 2 which may be a sleeve, push-fitted on a taper at the end of the peeling section 3. Peeling knives projecting only slightly above the cylindrical surface are held by spring knife carriers 3b in each of two slots 3a or are secured to the body by rivets or set screws. The device is fitted to a rotated headstock 5 by a screw or bayonet point.
Patent GB-909355-A (GB)
Title: Synthesis of vinyl esters by the use of acetylene, and catalysts therefor
IPC: B01J27/06
Filed: 1960-04-05
Abstract: Zinc or cadmium silicofluorides, used for the synthesis of vinyl esters from carboxylic acids and acetylene, are deposited upon a carrier such as activated carbon, alumina or silica, or devolatilized bituminous coal.  The carrier is added to an aqueous solution of salt, e.g. hydrated zinc silicofluoride, allowed to absorb the liquid and dried.  The carrier may be first subjected to high vacuum and the salts may be prepared by reacting carbonates or oxides with hydrofluoro-silici acid.ALSO:Vinyl esters e.g. vinyl acetate, are prepared by the reaction of acetylene with carboxylic acids, in the presence of a catalyst comprising a zinc or cadmium silicofluoride or a mixture thereof.  The catalyst is preferably supported on a carrier such as activated carbon, alumina or silica or devolatilized bituminous coal.
Patent GB-792076-A (GB)
Title: Improvements in and relating to dry-shavers
IPC: B26B19/14
Filed: 1956-04-19
Abstract: 792,076. Dry shavers. BRENTANI, O. April 19, 1956 [May 23, 1955], No. 12003/56. Class 131 A cutting head for a dry shaver comprises at least two co-planar rotary cutters, the radial blades of adjacent cutters intermeshing when the cutters are rotated at the same speed in different directions. As shown, cutting blades 8 of cutters 2 sweep over-lapping annular cutting paths on the undersurface of a perforated cutting plate 1. Contact between the cutters is prevented by appropriate disposition of the central key-way of each cutter on its drive shaft 3.
Patent GB-723354-A (GB)
Title: Improvements in or relating to illuminated display devices
IPC: G09F13/04
Filed: 1952-05-13
Abstract: 723,354. Signs. MACHARG, J. A. May 5, 1953 [May 13, 1952], No. 12059/52. Class 3 (2). In an illuminated display device of the kind in which the characters consist in single motifs of translucent material each character a is of hollow box-like form mounted in a correspondingly shaped opaque casing 5 in which is located the illuminant 6, the character being separated from the illuminant by an opalescent partition 2, means being provided for securing the casing to a frame or other support. As shown the character a is built from opalescent panels which are cemented together, the partition 2 forming the rear panel of the character. The sides of the casing are recessed to form a ridge against which the base of the character abuts, and it is secured in position by screws 7. The casing has a base plate 5c which extends beyond its sides to form the means for securing the casing to the frame, etc. In a modification the rear panel of the character is omitted and the partition 2 is then formed by a shielding strip mounted in the casing in front of the illuminant. The character can then be a one piece moulding. Specification 647,605, is referred to.
Patent GB-1002585-A (GB)
Title: Apparatus for selective recovery of waste gas from oxygen top blowing converter
IPC: C21C5/40
Filed: 1962-03-29
Abstract: <PICT:1002585/C4-C5/1> An apparatus for the selective recovery of CO-containing gas from an oxygen top blowing converter comprises, inter alia, an induced draft fan 9 for delivering cooled and de-dusted gas to a storage vessel 10 or to a chimney 12, depending on the positions of linked valves 13, 14, and a valve 15 in the line to the chimney operative in response to a pressure difference in the lines to the vessel 10 and chimney 12.  The apparatus operates as follows: a device responsive to the pressure in a cooler (see Fig. 1, not shown) actuates a butterfly valve 8 to maintain a constant pressure in the cooler and in the producer, which is sealed thereto. The valves 13, 14 are interconnected, one opening as the other shuts. A gauge 17 measures the pressure difference between the spaces behind the valves 13, 14 respectively and actuates the valve 15 via a controller 18 in a manner to keep this difference at zero. The purpose of the valve 15 is to eliminate the violent alterations in gas volume and pressure which would occur on operating the valves 13, 14 and to which the valve 8 cannot rapidly respond, with the risk of leakage of gas from the converter/cooler joint or infiltration of air therethrough into the converter.
Patent GB-611131-A (GB)
Title: Machine-tool for cutting up rods
IPC: B23D47/04
Filed: 1946-04-20
Abstract: 611,131. Cutting hard materials. BOOTH, E., and BOOTH, M. B. April 20, 1946, No. 12166. [Class 124] [Also in Group XXX] Apparatus for cutting-up carbon or other rods comprises a series of axially-spaced rotary cutting discs 12, to which the rods are fed from a hopper 21 by a rotating drum 11 having longitudinal grooves 19 for receiving individual rods, and transverse clearance slots 20 for the cutters 12. In the construction shown, curved guides 25 with stiff wire extensions 26 hold the rods in the drum grooves as they pass the cutters, and until they reach a discharge shoot 28. Fingers 29 extend into the slots 20 to ensure ejection of the rods and to clear the slots of dust. An abutment 22 holds back any rod which fails to enter a groove fully, and the leading edge of this abutment tapers back from the centre so that a bent rod passes through when turned, so that its centre part fully enters a groove, the projecting ends then being forced down by the tapering flanks of the abutment. The cutter discs may be formed by diamonds embedded in appropriate material.
Patent GB-1143369-A (GB)
Title: Sugar-free sweeteners
Inventor: EISENSTADT BENJAMIN
IPC: A23L27/30
Filed: 1966-03-21
Abstract: 1,143,369. Artificial sweetener. DIETARY FOODS (BLETCHLEY) Ltd. 21 March, 1966, No. 12280/66. Heading A2B. A sweetening composition comprises a mixture of 75-125 parts by weight of lactose, 3-20 parts by weight of a cyclamate artificial sweetener, and 2-8 parts by weight of a saccharine artificial sweetener.
Patent GB-463837-A (GB)
Title: Improvements in the manufacture of wooden air screws
IPC: B27M3/10
Filed: 1936-04-30
Abstract: 463,837. Laminated wooden blocks; compressing wood. HEINE, H., (trading as HEINE MOBELFABRIK PROPELLERWERK, H.). April 30, 1936, No. 12303. Convention date, Oct. 29, 1935. [Classes 145 (i) and 145 (ii)] [Also in Group XXXIII] In the manufacture of laminated wooden blocks for the construction of airscrews or blades thereof, increased strength and density is imparted to the hub, root or other portions of the blade block by inserting between very thin layers of wood which traverse the whole of said blade very thin additional layers corresponding to the size of said portions and by compressing all the layers with the simultaneous application of a synthetic resin adhesive at high pressure and at ordinary or raised temperature in such a manner that the portions which have to acquire greater thickness and density are subjected to a higher pressure than the other parts, said additional layers being so shaped and arranged that a gradual transition of density from one part to another is obtained. Very thin layers. 1, 2, 3 (e.g. 0À4-0À6 mm.) extend throughout the block and very thin additional layers 4, 5, 6 are interposed at the centre which forms the hub of a double blade or the root of a single blade ; the block is pressed in one or several operations between flat plates to give a body of uniform thickness ; the parts containing the additional layers are thus subjected to greater compression and acquire greater density and strength. To obtain a gradual transition of density the additional laminµ vary in length as seen in Fig. 1 and in width as seen in Fig. 2 ; the ends have their edges tapered off. An interior part of the blade may be similarly strengthened, the additional pieces being then tapered off all around their periphery. The same or different kinds of wood may be used ; the grain of the additional layers may be at an angle to that of the main layers.
Patent GB-136458-A (GB)
Title: Improvements in Power Hammers.
Inventor: SHEANE JOHN
IPC: B21J7/12
Filed: 1919-05-16
Abstract: 136,458. Sheane, J. May 16, 1919. Power hammers.-The tap G of a power hammer is coupled to a crank-disk A by a linkage comprising two levers F, F<1>, links E, E, coupled to the levers F, F<1>, and a yoke C on the connecting - rod B forming with the levers F, F<1> approximately an inverted equilateral triangle. The levers F, F<1>, preferably bowed, are pressed apart by a spring I engaging adjustable set-screws L.
Patent GB-1208676-A (GB)
Title: Polyester moulding materials which cure rapidly
IPC: C08F283/01
Filed: 1968-03-14
Abstract: 1,208,676. Unsaturated polyesters. CHEMISCHE WERKE HULS A.G. 14 March, 1968 [15 March, 1967], No. 12318/68. Heading C3P. A polyester moulding material contains (1) an unsaturated polymerizable polyester, (2) a polymerizable monomeric compound, (3) an organic peroxide (as curing catalyst), (4) a tertiary aromatic amine (as cure accelerator), and (5) pyridine and/or a pyridine derivative which contains one to three alkyl or alkenyl radicals and/or a benzocondensed hydrocarbon radical (as additional cure accelerator) in an amount of 0.05 to 7% by weight with reference to the whole of the polyester moulding material. In the examples are used: a polyester prepared from fumaric acid, phthalic acid and propanediol-1,2; styrene; hydroquinones and tertiarybutyl pyrocatechol; dibenzoyl peroxide (in dibutyl phthalate); dimethylaniline and N,N- bis - (# - hydroxyethyl) - p - toluidine; pyridine, 4-vinylpyridine, quinoline and α-picoline. In a comparative experiment cobalt naphthenate and cyclohexanone peroxide are used.
Patent GB-611184-A (GB)
Title: Improvements in or relating to gramophone pick-ups and the like
IPC: H04R9/12
Filed: 1946-04-24
Abstract: 611,184. Gramophone pick-ups. TRUVOX ENGINEERING CO., Ltd., and CLARK, F. April 24, 1946, No. 12423. [Class 40 (iv)] In a suspension and damping arrangement for the moving element in a gramophone pickup, a cylindrical member 20 carrying moving coils 22 surrounds a rigidly mounted pin 30, the intervening space between the cylindrical member 20 and the pin 30 being filled with a resilient material 29 under radial compression. The coils 22 are wound on ears or ribs 21, and the ends of the coil are carried to a terminal mounting 25. The stylus 26 is set in a projection 27 on the cylindrical member 20. The rod 30 is mounted in non-magnetic end plates 11, between which the polepieces 13 and the U-shaped magnet 15 are clamped.
Patent GB-102474-A (GB)
Title: Improvements in or relating to Appliances for Cleaning and Sterilizing Medical Vessels.
Inventor: LAMB MARTIN BRYDON
IPC: A61L2/06
Filed: 1916-09-02
Abstract: 102,474. Lamb, M. B., and Sinclair, N. J. Sept. 2, 1916. Medical vessels, cleaning and disinfecting.- Apparatus for cleaning and sterilizing sputum flasks, mugs, &c. used in hospitals &c. comprises a closed liquid receptacle 1 in which is arranged a tray 4 provided with openings 7, over which the vessels a, b are placed. In the openings project a series of steam and water tubes 14, the lower ends of which are fitted with water-inlet cones 12 and steam nozzles 17, the latter being connected to a distributor 20 having a steam inlet 22. The central tube 11 passes up through the perforated dome 8 and is surmounted bv a deflector 23 whereby a spray of steam and water is directed against the exteriors of the vessels. For holding mugs b, loose perforated disks 24 are used, together with clamps 26 carried on pillars 27 and held down by springs 29 and fly-nuts 28. The holders 26 may be replaced by a single plate held down by screws.
Patent GB-452525-A (GB)
Title: Improvements in the production of sulphur dioxide
IPC: C01B17/50
Filed: 1935-04-25
Abstract: In producing sulphur dioxide by burning gases containing a fluctuating proportion of sulphuretted hydrogen, carbon bisulphide is burnt in conjunction with the hydrogen sulphide-containing gases in a proportion sufficient to maintain the output of sulphur dioxide and to ensure continued combustion.  When burning the gases containing hydrogen sulphide leaving an ammonium sulphate saturator, a packed tower capable of being heated is provided in the path of the gases between the saturator and the burner. Benzole forerunnings containing carbon bisulphide are trickled down the tower in a quantity determined by their carbon bisulphide content and the proportion of sulphur to be added to the gases.  The sulphur dioxide may be converted to sulphuric acid by the contact process.
Patent GB-177084-A (GB)
Title: Improvements in or relating to packing cases or the like
IPC: B65D43/02
Filed: 1921-05-02
Abstract: 177,084. Burton, W. May 2, 1921. Corner joints and strengthening-pieces.-To prevent pilfering, the end walls 1 of a case are made taller than the side walls 2 by the thickness of the lid 4, shoulders 5 being formed on the inside of each end wall at the level of the walls 2 by battens 6 so that the lid rests on these shoulders and the walls 2 while a sealing- batten 7, secured to the lid and end wall, is arranged to cover the joint between them; a binding-hoop 9 is finally secured to the sealing-batten and around the end of the case. A similar construction is preferably used for the bottom of the case and the space between the battens 6 for the top and bottom at each end of the case may be filled in by a fillet piece, or a single wide batten may be used or the end of the case may be made thicker and rabbeted to form the shoulders 5. The ends of the binding-hoops may be hammered and sealed in a recess 8 in the sealing- batten or in a hole covered at the bottom by sheet tin. The walls are preferably dovetailed and the individual boards thereof tongued and grooved together, the joints being glued.
Patent GB-1085501-A (GB)
Title: Earth pressure cell
Inventor: THOMAS HAROLD SIDNEY HAMPTON
IPC: G01B17/04
Filed: 1963-03-29
Abstract: 1,085,501. Earth pressure transducers. NATIONAL RESEARCH DEVELOPMENT CORPORATION. June.26, 1964 [March 29, 1963], No.12670/63. Heading G1N. An earth pressure cell comprises a double diaphragm transducer having a stretched wire mounted on each diaphragm, the difference in natural vibration frequency of the wires being indicative of the earth pressure on one side of the cell. As shown (Fig. 2) two diaphragms 11a, 11b, each integral with a circular rim 12a, 12b which are bolted together, carry vibrating wires 15a, 15b, each mounted approximately at a diameter on a pair of posts 16a, 16b brazed to the respective diaphragms 11a, 11b. Each wire 15a, 15b is in the tank circuit of an oscillator including coils 17a or 17b, and the difference between the vibration frequencies is indicative of the earth pressure. The inside of the cell is sealed and filled with a gas, e.g. dry nitrogen, at a pressure equal to that of the pore water. The latter is fed through a porous plug 59 (Fig. 8) to a stiff Bourdon tube 57 carrying a stretched wire 56 across its ends, in the inside of the cell. The vibration frequency of wire 56 indicates any difference between the inside pressure and the pore water pressure, which may be eliminated by varying the internal pressure. The cell may be buried directly in the earth, or mounted in a cylindrical housing 41 (Fig. 7) for attachment to an underground structure. The gas filling for the cell is introduced through a sealed fitting 44, and the space between the cell and the base 42 of the housing 41 is filled with an incompressible liquid which distributes the pressure evenly over the lower diaphragm 11b. The side of the cell is barrel-shaped to enable it to tip if the load applied to the upper diaphragm 11a is eccentric.
Patent GB-577631-A (GB)
Title: Improvements in and relating to insulation for magnetic steel and the like
IPC: H01B3/10
Filed: 1944-07-05
Abstract: Magnetic sheet material has a thin insulating coating consisting of vermiculite and magnesium oxide.  The latter has a specific gravity of about 3.58 and comprises about 2 per cent. Bentonite may be added with a flux such as feldspar.  Two examples are: (1) vermiculite 49 per cent, bentonite 49 per cent and magnesium oxide 2 per cent; and (2) vermiculite 38 per cent, bentonite 55 per cent, feldspar 5 per cent and magnesium oxide 2 per cent.  The mixture is added to water and sprayed on to the sheet material which is then dried and annealed.  The laminations may be used for electric transformers and motors.