baber/WOPTO huggingface dataset:
Patent GB-557951-A (GB)
Title: Improvements relating to machines for perforating metal strips
IPC: B21D28/24
Filed: 1942-10-26
Abstract: 557,951. Punching. SHAW, J. Oct. 26, 1942, No. 15017. [Classes 83 (ii) and 83 (iv)] A machine for punching metal strips, such as stringers for the edges of aircraft sections, has means for passing one or more strips together with a perforated pattern bar over resiliently supported locating plungers mounted in fixed relation to the punches. The stringers 10 are passed through the machine over a series of guide rollers arranged before and after the actual punching station that incorporates similar rollers 19, 20, supporting the stops at 25 and guiding their lateral flanges at 26. Two stringers 10, Fig. 6, are secured in recesses in a crossbar 11 by wing nuts 16 on bolts with heads 15 fitting the stringers. A central slot in the crossbar receives the pattern bar 2 secured by a setscrew 12 and by dowels. The holes in the flanges 9a usually differ from those in the flanges 9b and the bar 2 has corresponding sets of holes 8a, 8b. A hand lever 35 pivoted at 36 slides a cam bar 37, Fig. 4, that engages the heads 38a, 38b of locating plungers, rendered resilient by springs 28, to cam the plunger not required out of action according to the flanges being punched. A corresponding grid of cam bars 41a, 41b, 42a, 42b, acting as gags for the punches 32a, 32b, 33a, 33b and cam bars 40a, 40b acting as gags for locating punches 30a, 30b is slid by direct hand pressure to immobilize the punches corresponding to the inactive locating plunger. The punches are guided by holes in a crossbar 29 secured to the bolster and sleeves 5 on the punch head slide on pillars 6 carried by the bolster. In operation the shank and pattern bar are turned by hand until the engagement of a hole in the pattern bar by the resilient plunger is felt to have effected rough location. On descent of the punch head the locating punch effects precise location immediately prior to the punching. Rubber buffers 49 engage the work prior to punching and act as hold-downs. The cam bars in the grid are separated by spacers 43 and connected by end bars carrying stops that limit the movement. Pins 46, 48 in the bolster carry additional guide rollers 45 adjacent the punches to secure precision on the location of the lines of holes.
Patent GB-921947-A (GB)
Title: Semiconductor device
IPC: H01L23/482
Filed: 1961-04-26
Abstract: 921,947. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORPORATION. April 26, 1961 [May 2, 1960], No. 15031/61. Class 37. A field effect transistor has the gate electrode in the form of a strip of material disposed at the bottom of a groove in the semi-conductor wafer. An N-type silicon semi-conductor die before the formation of the gate electrodes is shown in Fig. 2, the dimensions of the cuboid containing it being 50 X 120 x 25 mils. A groove 20 is etched into the die to a depth of 1 mil. and a width of 5 mil. In addition end 18 is etched to a taper. A number of these prepared discs are inserted in a groove 38 in a graphite boat 30. A stainless steel lid 40 with a narrow groove 42 is placed in the boat and aluminium is vaporized so as to deposit the gate electrode 22 (Fig. 3) and then the gate electrode 24 on the lower face of the die. After vapour deposition of the two electrodes they are alloyed into the silicon die in a resistance furnace flushed with hydrogen, helium or argon. A temperature of 950‹ C. for a quarter to two hours is suggested. The tapered end of the device causes the two regions to join so that a single electrode only is necessary for the gate connection. Ohmic contacts are fused to the upper surfaces of the die to connect the source and drain electrodes. These may be N-type material, for example antimony, arsenic or phosphorous or an alloy of gold and an N- type doping material. Fig. 12 shows a device 100 mounted on a metallic base disc 202 for example steel, aluminium or copper on a stud 204. The transistor is soldered with its source and drain electrodes downwards to the metallized surface of a ceramic disc 206. A central groove in the metallized surface prevents shortcircuiting of the source to the drain. A single gate connection 208 only is necessary and this with the source and drain connections 210, 212 are lead to contact posts which pass through glass-to-metal seals 220. Resinous coatings may be applied to the device and a cap brazed, welded or soldered in position to provide an hermetically sealed enclosure. Fig. 13 shows a circular device one of the gate electrodes being at the bottom of a groove 322 between annular source and drain electrodes 360, 362. The whole of the bottom face of the device is a further gate electrode 324. The Specification refers to the use of other semi-conductors in silicon, namely germanium, silicon carbide and Group III-V compounds. The use of boron in indium is also referred to for doping.
Patent GB-1263963-A (GB)
Title: Improvements in polyamides
Inventor: HOLUB FRED FRANK
IPC: C08G69/04
Filed: 1969-03-21
Abstract: 1,263,963. Polyamides. GENERAL ELECTRIC CO. 21 March, 1969 [8 May, 1968], No. 15055/69. Heading C3R. A polyamide comprises recurring units of formula where p is 0 or 1, -Q- is -CH 2 -, -C(CH 3 ) 2 -, -C(C 6 H 5 ) 2 -, -O-, -S-, -SO 2 -, -CO-, -Si(CH 3 ) 2 -, -NH- or -N(CH 3 )-, the co-groups in the acid residue being mutually meta or para and the NH-groups in the diamine residue being meta or para to Q. The polymer may also comprise units of formula It may be prepared by reacting equimolar quantities of the corresponding dicarboxylic acid halide and diamine in the presence of a solvent for at least one reactant. The reaction conditions may be anhydrous and the temperature less than 100‹ C. The amount of solvent may be such that the product contains at least 50% of the polymer. In examples the acid halide is the chloride and the solvent is pyridine mixed with DMA. The product is precipitated by addition to methanol containing formic acid.
Patent GB-593358-A (GB)
Title: Improvements in press-off and hole detector for knitting machines
IPC: D04B35/10
Filed: 1944-08-09
Abstract: 593,358. Knitting-machines. STOPMOTION DEVICES CORPORATION. Aug. 9, 1944, No. 15158. Convention date, Nov. 10, 1943. [Class 74 (ii)] A stop-motion for a circular knitting-machine includes a press-off and hole detector comprising a member 17 connected to the knitting head shaft and disposed within the knitted tube immediately below the needles, a body 18 pivoted on the member to swing in a plane perpendicular to the axis of the knitted tube, a finger 23 slidable from the body in such a plane, resilient means normally urging the outer. end of the finger against the inner face of the fabric, and friction means releasably holding the body in a " neutral " position (in. which position insulation means breaks a controller circuit including body and member in series) until it is turned from that position by the finger engaging a hole in the fabric. The finger 23 and the machine are in series in a second controller circuit. Thus, the machine will be stopped, either if the finger passes through a press-off or hole in the fabric and touches the cylinder, or if the body 18 is swung from its " neutral " position. The body 18 is pivoted on a bracket 20, which is mounted on the member 17 but insulated therefrom by a sleeve 21. A spring-urged ball 30 engages in a recess 34 in the body when the latter is in the " neutral " position and in one or other of two pear-shaped recesses 37 when the body is pivoted away from that position. A contact 40 conveys current via bracket 20 to body 18 and thence to finger 23 and, when the body 18 is not in the " neutral position, to the member 17, via a contact 43 ; when the body 18 is in the neutral position, however, the contact 43 engages an insulating disc 45. A manuallyoperated switch and a signal flag to indicate whether the switch is " on " or " off " are provided. A number of such detectors are adjustably mounted in radial openings 14 formed in a collar 13 fixed on the knitting head-shaft 11<1>.
Patent GB-370237-A (GB)
Title: Lifting portiere rods
IPC: A47H1/022
Filed: 1931-05-22
Abstract: 370,237. PortiÞre rods ; suspending curtains. BYFORD, C. H., 25, Havelock Street, Ilford, Essex. May 22, 1931, No. 15211. [Class 52 (v).] In a portiÞre rod arrangement of the kind in which a rod 1 is hinged at 3 to a member 2 pivoted to the door frame the rod being pivotally connected to a link 5 pivoted to the door, the link 5 and the member 2 are spaced from the door and door frame respectively by a short tube 8 and washer 9 through each of which a single attaching screw 4 passes, the screws acting as pivot pins. The washers are preferably made of indiarubber. The outer end of the tubes 8 may be flanged and a metal washer may be interposed between each rubber washer 9 and tube 8. The rod 1 may be of strip form to receive clips secured to the curtain. Spaced holes may be provided in the rod to receive curtain hooks &c.
Patent GB-467370-A (GB)
Title: New and improved production of pectin composition
IPC: A61K9/16
Filed: 1936-06-02
Abstract: Pectin for use as a medicine is coated with a fatty material, i.e. an edible fat or oil or a higher fatty acid, to inhibit the swelling of the pectin in contact with water.  The coating may be applied molten, or in solution in a volatile solvent. Phenolphthalein, cascara or other laxative drugs may be mixed with the pectin before coating. The coated pectin may be used in making bakery products and cereal compositions.ALSO:Pectin for use as a medicine is coated with a fatty material, i.e. an edible fat or oil or a higher fatty acid, to inhibit the swelling of the pectin in contact with water.  The coating may be applied molten, or in solution in a volatile solvent. Phenolphthalein, cascara or other laxative drugs may be mixed with the pectin before coating.  The coated pectin may be used in making bakery products and cereal preparations.
Patent GB-684823-A (GB)
Title: Improvements in or relating to apparatus for drawing off samples from a vacuum vessel
IPC: G01N1/20
Filed: 1951-06-27
Abstract: 684,823. Valves. SUSSMEYER, L. June 27, 1951 [June 27, 1950], No. 15307/51. Class 135. A valve for controlling the flow of liquid from a vacuum vessel C to an outlet port 14 leading to a gastight sample collecting receptacle 17 comprises a plunger member consisting of pistons 12, 13 of differing diameters connected by a conical surface 11 and closely fitting in a similarly shaped casing 1 so that, when the valve is closed, any liquid in the casing is returned to vessel C. Receptacle 17 is held up against a seal 16 surrounding the outlet 15 by a spring-urged plate 18, the latter being released by pulling down a lever 19 which carries the plate. The valve is actuated by rotating its spindle which is screwed and passes through a nut 5 carried on a yoke projecting from the casing 1. The spindle passes into the casing through packing 7.
Patent GB-743432-A (GB)
Title: Improvements in or relating to apparatus for heating gaseous fluids
Inventor: RACINE GILBERT
IPC: F24D5/00
Filed: 1953-06-03
Abstract: 743,432. Gas-heating stoves. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. June 3, 1953 [June 6, 1952], No. 15365/53. Class 64(1). In air-heating or other gas-heating apparatus in which the gas is heated by a pulsatory or resonant-firing combustion chamber 1, the exhaust from the combustion chamber passes through an ejector 14 which sucks the gas to be heated through a chamber 2 around the combustion chamber. The ejector 14 is positioned downstream of a room or other space 12 to be heated. Several resonant firing combustion chambers may have separate ejectors arranged in parallel and connected to a common exhaust.
Patent GB-624149-A (GB)
Title: Improvements in or relating to electrical connecting devices
IPC: H01R4/48
Filed: 1947-06-11
Abstract: 624,149. Couplings. STANDARD TELEPHONES & CABLES, Ltd., and ROBERTON, J. S. P. June 11, 1947, No. 15379. [Class 38 (i)] [Also in Group XXXIX] To permit parts to be assembled in any relative rotational position, a connector comprises flat concentric coplanar members 2, 3 provided with projections either in line through the centre or diametrically opposite upon the points 4, 5 of which the connections may be made, the centre of the points being the same as that of the members. The members 2, 3 normally abut spring leaves 13, 14 on a base 11 which contact the member 2 and the centre of the member 3, respectively. In alternative arrangements, only two points 4, 5 are provided (Fig. 5, not shown), and four concentric members are used, the inner pair being of the class shown in Fig. 1 and the outer pair being rings with projections extending from each into the space between them and aligning with the projections of the inner pair (Fig. 6, not shown).
Patent GB-197554-A (GB)
Title: Improvements in means for rotatively connecting wheels or handles to shafts
IPC: F16D1/06
Filed: 1922-06-01
Abstract: 197,554. Broadhead, J. B., and Wood, T. June 1, 1922. Clutches, claw; securing wheels and levers on shafts.-In means for operatively connecting a loosely-mounted wheel or handle to a shaft, such as the spindle of a motor-actuated valve, a sleeve d, slidable on a squared part a' of the shaft a, is provided with a claw having undercut end faces d' adapted to engage similar faces c<1> on a claw formed on the boss c of the wheel &c. when the sleeve is slidden manually against a spring h and the wheel &c. is turned in either direction. As soon as the driving-effort is relaxed, the spring withdraws the sleeve d, leaving the wheel &c. free. The sleeve has a cap e, provided with a hollow stem e guided on a stud g and with a set-screw k, closing an aperture through which lubricant may be supplied. The lubricant passes through holes in the stem e' and is retained by a packing-ring j in a guardring i and a packing-ring l arranged in a bush b adjacent to the motor casing or other fixed part m.
Patent GB-845578-A (GB)
Title: Purification of phenoxymethylpenicillin
IPC: C07D499/60
Filed: 1957-05-15
Abstract: Phenoxymethylpenicillin is purified by adding 2-methoxyethanol to a crude product or an impure aqueous solution thereof, adjusting the pH of the suspension or of the solution to pH 1,5 to 2,0 with a strong acid and then if necessary adding water to precipitate the phenoxymethylpenicillin, the ratio of 2-methoxyethanol/water being between 0,15 and 1,0.  The solution is stirred and cooled, e.g. to 0 DEG C.  A fermentation broth is first extracted with amyl acetate at pH 1,9 and the extract so formed with a buffered phosphate solution at pH 6,5. 2-methoxyethanol is added, the mixture acidified, stirred and cooled, to precipitate the phenoxymethylpenicillin free from phenoxyacetic acid.  As crude phenoxymethylpenicillin may be used salts of phenoxymethylpenicillin with a base of general formula: <FORM:0845578/IV(b)/1> wherein R is hydrogen or an acyl group, e.g. L-threo-1-p-nitrophenyl-2-amino-1, 3-propane diol (see Specification 845,579).
Patent GB-598380-A (GB)
Title: Improvements in or relating to the synthesis of liquid hydrocarbons
IPC: B66C7/00
Filed: 1945-06-18
Abstract: In the synthesis of liquid hydrocarbons from carbon monoxide and hydrogen with a fluidized catalyst comprising a hydrogenation catalyst on an inert support, catalytic activity is maintained constant by adding fresh hydrogenation catalyst and/or catalyst promoter or a solid inert diluent to increase or decrease activity as required.  Activity is increased by adding the active component alone or a carrier more highly impregnated therewith than in the original catalyst.  Decrease in activity is effected by adding a solid diluent which may be the same as the catalyst support.  Cobalt promoted with magnesia or thoria supported on kieselguhr, clays or synthetic gels such as silica gel, or iron-containing <PICT:0598380/III/1> catalysts may be used.  The reaction gases pass through a foraminous member G and their velocity is controlled to give a dense suspension of catalyst having an upper level L.  The activating or de-activating addition is supplied from a hopper 13, and used catalyst in equivalent amount is withdrawn through standpipe 15 or from the overhead recovery unit 22.  Catalyst may be continuously withdrawn by pipe 15, washed with hydrocarbon oil in 16 to reactivate it, and returned to the reactor.ALSO:<PICT:0598380/IV/1> In the synthesis of liquid hydrocarbons from carbon monoxide and hydrogen with a fluidized catalyst comprising a hydrogenation catalyst on an inert support, catalytic activity is maintained constant by adding fresh hydrogenation catalyst and/or catalyst promoter or a solid inert diluent to increase or decrease activity as required.  Activity is increased by adding the active component alone or a carrier more highly impregnated therewith than in the original catalyst.  Decrease in activity is effected by adding a solid diluent which may be the same as the catalyst support. Cobalt promoted with magnesia or thoria supported on kieselguhr, clays or synthetic gels such as silica gel or iron-containing catalysts may be used.  The reactant gases pass through a foraminous member G and their velocity is controlled to give a dense suspension of catalyst having an upper level L.  The activating or de-activating addition is supplied from a hopper 13, and used catalyst in equivalent amount is withdrawn through standpipe 15 or from the overhead recovery unit 22.  Catalyst may be continuously withdrawn by pipe 15, washed with hydrocarbon oil in 16 to reactivate it, and returned to the reactor.
Patent GB-584284-A (GB)
Title: Improvements in the production of composite materials
IPC: D03D15/00
Filed: 1944-08-19
Abstract: 584,284. Compound sheet materials. DUNLOP RUBBER CO., Ltd., GRAHAM, J., and HIRST, H. A. Aug. 19, 1944, No. 15511. [Class 140] Compound sheet material is made by locating parallel wires, e.g., of steel, in contact with a textile fabric or between and in contact with two textile fabrics, the textile fabric or fabrics being composed partly of fusible threads and partly of non-fusible or less readily fusible threads, and bonding the assembly under pressure and at a temperature sufficient only to fuse the firstmentioned threads. The wires may lie in the same direction as the fusible threads, which may be of a vinyl polymer such as the material known under the Registered Trade Mark "Vinyon," or cellulose acetate, the remaining threads being at right angles to this direction and comprising for example, material such as nylon, cotton or silk. Two plies of such fabric may be used, one on each side of the wires, or one ply may consist of the fusible threads and the other of the non-fusible or less readily fusible threads. The bonding may be effected by passing the material between. heated calender rolls.
Patent GB-1501203-A (GB)
Title: Seeding device
IPC: A01C7/02
Filed: 1975-04-16
Abstract: 1501203 A manual seeding device R ROVERE 16 April 1975 15571/75 Headings A1B and A1D A seeding device comprises two slidably mounted parts 1 and 13 of which part 1 carries a seed hopper 5 and part 13 carries a handle (15) Fig. 2 (not shown) and an extension or bar 16, and a stop plate 3 for limiting the penetration of the device into the ground, wherein the part 1 has a narrowed end portion or the portion terminates into a pointed end. When the handle (15) is depressedthe rod 16 sinks a grain received within the part 1 from the hopper 5. In the depressed condition the part 13 receives a grain in its aperture 9 and when the handle 15 is raised the grain is transferred to the space within the part 1 through its aperture 10. While the grain is within the part 1 it is prevented from dropping out by a spring 4. In another embodiment the hopper 21 contains a reciprocable spreader 22 having apertures 24 and teeth (25) Fig. 9 (not shown) such that when the part 27 is depressed its flange (28) Fig. 3 (not shown) meshes with a tooth (25) to rotate the spreader 22 in one direction to allow a grain to fall within the part 17 via an aperture 37 and when the part 27 is raised its second flange (29) meshes with a tooth (25) to off-set the alignment of the apertures 24 and 37. The stop plate of the device may be in the form of a disc. In another embodiment the stop plate 35 can be replaced with a similar plate but having a penetrating end 20 with a different size passage in order to obtain holes in the ground which correspond to the types of grain to be planted.
Patent GB-364999-A (GB)
Title: Process of and apparatus for the electric melting of glass
IPC: C03B5/027
Filed: 1931-05-27
Abstract: 364,999. Glass manufacture. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London.-(Hartford-Empire Co. ; 333, Homestead Avenue, Hartford, Connecticut, U.S.A.) May 27, 1931, No. 15572. [Class 56.] Production of metal.-A furnace for the manufacture of common glass, vitreous enamels, and silicate of soda comprises upper and lower chambers 1, 2 fitted with electrodes 10, 11, 9 and interconnected by a throat 3, the electrode 9 having a contact surface greater in area than the cross section of the throat. As shown, the batch is fed into the upper chamber through shoots 5, but it may be fed centrally. Discharge occurs through an outlet 6 and water-cooled rollers 7 on to a roller apron 8 from which the glass passes to a lehr. Circulation occurs in the furnace as shown by arrows. As the batch passes over the electrodes 10, 11 on entering the furnace it assists in keeping them cool. The shortest current path is from the highest point of the electrodes 10, 11 and it is this part of the electrodes which is first swept by the batch. Balanced loading of the upper electrodes is effected by an autotransformer 16a. The temperature in the chamber 2 is 200‹ F. to 400‹ F. below the temperature in the throat 3 and chamber 1. The electrodes may be of nickel chromium and the electrode 9 is supported by plates 18 carried between channel bars 19 mounted on channels 20. In modifications the electrode 11 is dispensed with or is replaced by a central arcing electrode. In another modification electrodes 10, 11 are replaced by a central arcing electrode. In a further modification the electrode 9 is replaced by electrodes in the sides of the bottom chamber.
Patent GB-544717-A (GB)
Title: Improvements in or relating to cast hard metal alloys
IPC: B23K35/32
Filed: 1940-10-23
Abstract: 544,717. Alloys. LAZENBY, T., and FRANCOIS CEMENTATION CO., Ltd. Oct. 23, 1940, No. 15596. [Class 82 (i)] Hard alloys, including iron alloys and alloys consisting mainly of refractory metal carbides, and made by melting as distinct from sintering processes, contain boron carbide as a constituent, for example, 0.5-6 per cent. Examples are described consisting of iron with specified proportions of (a) chromium, cobalt, molybdenum, and boron carbide, and (b) chromium, nickel, tungsten, and boron carbide. Reference has been directed by the Comptroller to Specification 508,486.