baber/WOPTO huggingface dataset:
Patent GB-1436188-A (GB)
Title: Method of manufacturing semiconductor devices and to semiconductor  devices manufactured thereby
IPC: H01L29/06
Filed: 1973-03-14
Abstract: 1436188 Semi-conductor devices FERRANTI Ltd 14 March 1974 [14 March 1973] 12351/73 Heading H1K In a method of manufacturing a semiconductor device 10, e.g. a diode, there is provided a semi-conductor body a first high resistivity region 11 of one conductivity type with an impurity concentration in the range 5 Î 10<SP>13</SP>-10<SP>15</SP> atoms/c.c; which encircles a region 14 of opposite conductivity type to form a P-N junction 15 therewith which in operation is to be reverse-biased, wherein to obviate leakage current across the junction 15 there is provided a second region 23 at the surface 13 of the one conductivity type having an impurity concentration in the range 10<SP>16</SP>-10<SP>20</SP> atoms/c.c. encircling the junction 15 and spaced therefrom by the first region 11 and impurity from the second region 23 is caused to diffuse into the first region 11, as at 24, to provide an impurity concentration gradient between regions 23 and 14 The arrangement is such that under normal operating conditions the surface portions of the depletion layer of the junction 15, whose boundary is indicated at 16, have a finite width and the surface portions of the depletion layer are always within a predetermined area of the surface between the second region 23 and the region 14. Preferably the region 24 containing the impurity diffused from region 23 extends as close as possible to region 14. As shown, the surface of the semi-conductor body between regions 14 and 23 may lie beneath a field electrode 27 on a layer 17 of passivating material, the potential on the electrode 27 being such as to ensure that the surface portions of the depletion layer reach the diffused region 24 in operation of the device. In practice electrode 27 may comprise an extension of the contact 21 to region 14. The N-type Si region 11 may be epitaxially deposited on N + type substrate 12 provided with a contact 20 and the regions 14 and 23 may be formed by the diffusion respectively of boron and phosphorus through an apertured oxide mask. The semi-conductor body may be doped with a lifetime killing impurity such as gold, Fig. 2 (not shown).
Patent GB-831722-A (GB)
Title: Improvements in nuclear fuel element handling apparatus
Inventor: NICOL JAMES MILLER
Filed: 1957-04-16
Abstract: 831,722. Handling material in radioactive environment. BABCOCK & WILCOX Ltd. April 15, 1958 [April 16, 1957], No. 12412/57. Class 39(4). Apparatus for transferring fuel elements which have been withdrawn upwardly from a reactor by a discharging machine, to a storage pond, comprises, Figs. 2, 3, a discharge conduit 11 through which the elements are lowered singly, from the machine into a holder 10. The holder 10 accommodates one fuel element and is carried by an arm 19 secured to a shaft 20 whereby it may be swung into a horizontal position above a skip 12 mounted on a carriage 14. The holder 10 includes a U-section body 18 and retains the fuel element by a pair of pivoted doors 27 which are biassed to the closed position by weighted arms 39 ; however in the horizontal position of the holder the arms 39 engage cam surfaces 30 on brackets 31 whereby the doors are opened and the fuel element drops in a horizontal position into the skip 12. When the skip is full it is lowered down tracks 16 into the pond by a cable 15 attached to the carriage 14. The doors 27 are held closed in the vertical position of the holder by a pair of bell crank levers 40, one arm of each lever carrying a weight 41 and the other arm engaging an arm 39. The holder is pivoted by an hydraulic cylinder 37 having a piston 36 connected to the shaft 20 through a rod 35 and crank lever 34. In a modification. Fig. 7, pivoted holder 60 (shown in its horizontal position above a skip 62) comprises a rotatable member 74 having a pair of channels 75, the fuel element E being released to drop into the skip by rotating the member 74 through 180 degrees. The pivotal movement of the holder 60 and rotational movement of the members 74 are controlled by a pair of air cylinders, Fig. 6 (not shown).
Patent GB-1217892-A (GB)
Title: Face mask
IPC: A41D13/11
Filed: 1968-03-14
Abstract: 1,217,892. Surgical mask. MINNESOTA MINING & MFG. CO. 14 March, 1968 [15 March, 1967], No. 12538/68. Heading A5T. A surgical face mask comprises a face-contacting layer 24 of a porous, smooth-surfaced, thermoplastic polymer film overlying a body portion 22 composed of uniformly distributed thermoplastic polymer fibres having an average diameter of less than 6 microns and, optionally, an outer, porous covering layer 26. Preferably, the fibres of the body portion are present in loosely held bundles or "ropes" and may be made from a wide variety of polymers such as polyethylene, polypropylene, polyesters, polyamides, polycarbonates, polyphenylene oxide and fluorinated polymers. The face-contacting layer may be of polypropylene and may be treated by contacting it with a heated surface to remove "fuzz" and to cause the fibres to coalesce at their points of contact.
Patent GB-865390-A (GB)
Title: Improved contact cleaning device
Inventor: MELTON HARRY JACK
IPC: B24B23/08
Filed: 1958-04-22
Abstract: 865,390. Cleaning contacts. ERICSSON TELEPHONES Ltd. May 22, 1959 [April 22, 1958], No. 12664/58. Class 60. A device for cleaning contacts of electro-mechanical switches in telephone exchange systems of the kind having part circular contact banks is adapted for attachment to a switch contact bank and comprises a plurality of members bearing cleaning or polishing means, means for locating the members between said contacts and means for moving the members between and in contact with the contacts. An assembly of cleaning discs comprises thirty-three discs 10 assembled upon a square shaft 11. The discs may be of resilient metal or synthetic resin. Each disc has radial slots 12 in which fabric tape 13 is interwoven. Each end of the tape is secured to the disc by means of a thin metal strip 14 folded and crimped to the end of the tape, two parts of the strap being spot-welded together through a rectangular hole 16 in the disc. The tape may be impregnated with cleaning or polishing compound. Each disc has riveted to one face a spacer 17 of thickness less by the thickness of a disc 10 than the distance between contacts in a bank. A slot 18 in disc 10 and spacer 17 enables the discs 10 to be assembled on shaft 11, the latter being threaded at each end to receive a nut 21 and having at one end driving dogs 22. The discs 10 and spacers 17 are locked upon shaft 11 by a member 23 engaging rebates 24 in each disc and spacer and secured to shaft 11 by screws 25. The shaft 11 is carried in a frame 26 at its lower end by a screw 27 threaded into shaft 11 and running in a bearing secured in frame 26. At the upper end the dogs 22 on shaft 11 are engaged by dogs on the end of a shaft 29 running in bearings 31 in a gear box 32 attached to the frame 26. A pin 33 in shaft 29 engages an axiel slot 34 in a sleeve 28 driven, through helical gears 35, 35<SP>1</SP>, by a shaft 36 driven, through reduction gear 37, by a motor 38. The shaft 29 has a handle 30 which can be withdrawn to disengage the dogs on shaft 29 from those on shaft 11. The frame 26 is hinged in a corner. 41 provided with lugs and slots 42 co-operating with similar lugs and slots in the framework of a switch 43 which normally carry the switch operating mechanism. The device is hinged by co-operating pins and lugs on the frame 26 and carrier 41, a spring urging the device and carrier into the relative positions shown in Fig. 4. In use, the operating mechanism of the switch is replaced by the carrier 41. The frame 26 is swung against the spring towards the switch banks 44 so that the cleaning discs 10 intermesh with the switch contacts, the parts being secured in this position by a catch 50 co-operating with a pin 51 on the switch frame. A worm on the shaft 36 drives, through reduction gear 40, a cam in a box 52 which cam operates switches to allow motor 38 to turn the shaft 11 a predetermined number of resolutions, e.g. twenty the; shaft is always stopped with the plain parts of the discs 10 facing the contacts. The box 52 also carries a a pilot light 53 and a fuze.
Patent GB-572518-A (GB)
Title: Improvements in photographic sensitometry
IPC: G01J1/42
Filed: 1943-08-06
Abstract: 572,518. Sensitometry. KODAK, Ltd. (Eastman Kodak Co., Jones, L. A., Nelson,. C. N., and Clark, L. D.). Aug. 6, 1943, No. 12718. [Class 98 (i)] A sensitometer tablet for making a sensitometric strip (e.g. on a printing paper the sensitiveness of which is to be ascertained), comprises in its simplest form a strip, Fig. 1, ranging from high densities to low densities in which there is a constant increment between each area in the low density range and a constant increment in the high density range. The low density increment may be between .01 and .06 (e.g. .02) and the high increment between .03 and .12 (e.g. .06). In Fig. 3, each area comprises a pair of adjacent areas with a small increment between the members of each pair (e.g. .02 for the low density pairs and .06 for the high density pairs) with a constant difference (e.g. .1) between steps throughout. In Fig. 4, the steps are arranged around a circle with the higher density of each pair comprising a circular area C on a background B of the lower density. The area D and the outside area are formed of a uniform density approximating to step 8 simulating the average density of most negatives when prints are made. In lieu of circles C each area may be of a different shape.
Patent GB-1466948-A (GB)
Title: Determination of biological modifications in normal and pathological organisms
IPC: G01K13/00
Filed: 1974-03-21
Abstract: 1466948 Measuring temperature electrically SPITALUL CLINIC FILANTROPIA-BUCURESTI 21 March 1974 12723/74 Headings G1D and G1N Apparatus for use in determining temperatures on the surface of a living body includes a plurality of thermistors 1, set in the surface of a plastics sponge 2 suspended by springs 3 in a frame 8 in order to obtain intimate contact between each thermistor and the body surface. Each thermistor is linked to a cable 5 by conductors 4, only one of which is shown. The springs 3 are connected to members 7 mounted with guiding rolls on the frame 8 to permit vertical movement. In a modification of the apparatus the thermistors are set on a hundred and twenty elastic supports arranged in three lines at a distance of one centimetre from one another.
Patent GB-659457-A (GB)
Title: Improvements in or relating to bituminous material
IPC: C08K5/20
Filed: 1949-05-12
Abstract: The adhesive power of bituminous materials, e.g. an asphaltic bitumen or a cut-back, to solid materials is increased by heating the bituminous material or the bituminous oil from which the bitumen is obtained by distillation with sufficient of an organic compound containing a free amino group and substituted by at least one further amino or hydroxy group to react with the high molecular weight organic acids in the bituminous material to form organic acid amides carrying at least one other unreacted amino or hydroxy group; if necessary the content of organic acids may be increased before the treatment with the amine in order to ensure the presence in the final product of sufficient surface-active amine to increase the adhesion. The amino group is preferably a primary group, and specified amines are ethylene diamine, propylene diamine, hexamethylene diamine, diethylene triamine, triethylene tetramine, tetraethylene pentamine, and ethanolamine. The quantity of amine added is such that the second amino or the hydroxyl group does not react with the acids.  When volatile amines are used, the treatment is carried out in a closed vessel or the reaction is carried out first at a relatively low temperature and then at a higher temperature to cause the formation of acid amides from the amine salts.
Patent GB-426587-A (GB)
Title: Cylinder boring machine
IPC: B23Q9/00
Filed: 1934-04-27
Abstract: 426,587. Cylinder-boring machines. STORM MANUFACTURING CO., Inc., 406, 6th Avenue South, Minneapolis, Minnesota, U.S.A. April 27, 1934, No. 12737. Convention date, Dec. 14,1933. [Class 83 (iii)] A cylinder-boring machine adapted for boring the cylinders of internal-combustion engines, of the type having a feed bar for advancing the tool which is operated by a screw and disengageable nut, has means, rotatable about the axis of the screw and nut, for forcing the latter into operative mesh with the screw. The boring-bar 19 is mounted for rotary movement in a feed bar 20 carried by a split sleeve 26 forming part of the machine bed, spring-pressed friction pads 83 preventing the feed bar falling by gravity. A rack and pinion feed operated by a handle 34 is provided, also an automatic feed from the motor 46. The latter drives through toothed gearing a shaft 50 which in turn transmits the drive to a train of toothed wheels in the head 53 for rotating the boring bar, and a worm slidably keyed to the shaft 50 and housed in the casing 53 drives a worm wheel 61, Fig. 8, and thus rotates through bevel gearing the halves of a feed nut 70. These nut-halves, arranged about a fixed feed screw 66, are normally pressed apart by springs 73, Fig. 10, and are brought together to engage the feed by a quarter turn of a cam-shaped sleevepiece 74, a part of which projects outside the casing 53. This casing is integral with the feed bar 20 so that when the nut is engaged, feed of the boring-bar takes place. The switch 84 for the motor may be knocked into the " off " position during feed by an adjustable stop bar 86 carried by the casing 53, Fig. 1. A hand-hold 29 facilitates moving the machine.
Patent GB-1459396-A (GB)
Title: Process for fertilization and composition therefor
IPC: A23K1/175
Filed: 1973-03-16
Abstract: 1459396 Fertilizer composition AGRINALKA AS 14 March 1974 [16 March 1973] 12744/73 Heading C1B Crop areas are fertilized by applying a fertilizer consisting of fly ash in wet form to a crop area in an amount of 0À2 to 10 tons of wet fly ash per hectare. The fly ash may be applied in the form of a mixture consisting of limestone and fly ash. The fly ash, which is derived as a waste material from the use of pulverized hard coal as a fuel in power stations, supplies nutrients such as P, K, Ca and Mg to plants and also contains a large number of trace elements.
Patent GB-1037453-A (GB)
Title: Trollies
IPC: A47B31/00
Filed: 1964-04-10
Abstract: 1,037,453. Tea trollies. D. G. DAWKINS. July 12, 1965 [April 10, 1964], No. 12888/64. Heading A4H. A vertically adjustable tea trolley has spaced trays 10, 11 mounted on telescopic legs 12 which can be locked at the desired height by means of a wedge 21 in each leg operated by a rod 23 urged upwardly by a spring 26 so that an inclined face 22 of the wedge engages a rivet 19 in the tubular leg, the leg member being released by pressing on guiding handles 14 to which the rod 23 is secured. Power operated means such as pneumatic piston and cylinder may be provided to move the legs.
Patent GB-1448656-A (GB)
Title: Pyrimidin 2 yl-thionophosphoric acid esters process for their preparation and their use as insecticides acaricides and nematocides
IPC: A01N57/16
Filed: 1975-03-27
Abstract: 1448656 Pyrimidin(2)yl - thionophosphate esters BAYER AG 27 March 1975 [28 March 1974] 12935/75 Heading C2P Novel compounds of the formula wherein R is methyl or ethyl are obtained by reacting a diester halide: nC 3 H 7 OP(S)(OR)Hal wherein Hal is halogen with the hydrochloride of 2-hydroxypyrimidine, optionally in the presence of an acid acceptor, or with an alkali metal, alkaline earth metal or ammonium salt of 2-hydroxypyrimidine. The products have insecticidal, acaricidal and nematocidal properties and may be used as active ingredients in conventional pesticidal compositions.
Patent GB-936175-A (GB)
Title: Improvements in or relating to rotary high-vacuum pumps
Inventor: GARNIER HENRI LOUIS
IPC: F04D19/04
Filed: 1962-04-04
Abstract: 936,175. Axial-flow pumps. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. April 4, 1962 [May 15, 1961], No. 13013/62. Class 110(1). A rotary high-vacuum pump of the kind designed to operate in series with and upstream of an ordinary vacuum pump, comprises a succession of alternately rotary and stationary blade rings, the blades of each of the rings having a triangular cross-section (Fig. 3) with a sharp rectilinear edge a and a planar transverse rear face s in a plane substantially perpendicular to the rotation axis, successive rotary and stationary blade rings being mutually arranged so that the sharp edges of one blade ring are immediately adjacent the planar faces of the next preceding blade ring. The pump, which may be driven by a built-in motor, is provided with an inlet E, Fig. 1, and outlets S connected by a pipe T to the suction end P of a backing pump (not shown), and has rotary discs R separated by fixed discs F, which discs have the blades arranged on their periphery. The gas molecules are assisted in moving in the direction f to the outlets S by inclining the axis of the ducts, between the blades on the fixed and mobile discs, in a direction in accordance with the direction of rotation r. Any back-flowing molecules impinge on the transverse surfaces s and the lateral walls of the ducts, to be redespatched with a component of speed which tends to send them downstream.
Patent GB-354251-A (GB)
Title: Improvements appertaining to drag arrangements for flyer spinning, doubling, twisting and like machines used in the production of yarns or threads
IPC: D01H13/10
Filed: 1930-04-29
Abstract: 354,251. Drag arrangements for flyer spinning &c. machines. FAIRBAIRN LAWSON COMBE BARBOUR, Ltd., Wellington Foundry, and HARDISTY, F., 14, Stranmore Road, Burley, both in Leeds. April 29, 1930, No. 13110. [Class 120 (ii).] In drag devices for flyer spinning, doubling, twisting, &c. machines annular friction-applying members are employed in combination with one or more friction surfaces so that the friction-applying members being mounted one upon another by screw threads may be brought into or removed from use by screw action to keep the tension of the thread approximately constant. Annular friction-applying members 2, 2a, 2b connected together by screw threads are mounted upon the lifter rail 3, and carry friction surfaces 4, 4a, 4b. The central friction-applying member 2a is fixed to the lifter rail by means of a screw w. A disc 6 of metal rests in the friction surfaces and is arranged to rotate with the bobbin 7 either by means of projection 6a which engage in openings 7b in the base flange 7a of the bobbin or by other known means. Members 8c, 8d are provided for operating the friction-applying members 2, 2b so that at the commencement of the spinning operation the member 2 is raised above the others and the friction surface 4 is in contact with the disc 6. When more drag is required the member 2 is lowered so that the disc is supported on the central friction surface 4a and for maximum drag the member 2b is screwed into the raised position so that the surface 4b contacts with the disc 6. In a modification the devices for raising or lowering the friction-applying members project one on each side of the lifter rail and are connected to rods passing the whole length of the machine so that adjustment of all the drag arrangements may be effected simultaneously. In another modification an arrangement is described whereby the adjustment of the drag devices may be effected either for each spindle separately or for all the spindles simultaneously and whereby all the drag devices may be brought to their normal initial position before starting the machine. Instead of separate friction surfaces mounted on each friction-applying member, a single-friction surface may be secured to the disc supporting the bobbin so that it rotates with the bobbin, drag being effected by the contact between the stationary friction-applying members with the rotating friction surface. The device is applicable to live or dead spindles.
Patent GB-131651-A (GB)
IPC: F02M37/04
Abstract: 131,651. Moulet, J. L. L. A. A. June 4, 1917, [Convention date]. Diaphragm pumps; casings for actuating mechanism. - A pump suitable for pumping fuel to the engines of aerial machines comprises an outer rigid casing a provided with suction and delivery valves f , m, an inner collapsible casing b, and a rod d attached at one end to the end b<1> of the casing b and reciprocated by a cam i and a spring g. The spring g is adjusted by means of a nut h on the rod d. If the pressure in the pump space between the casings a, b increases, the casing b is moved away from the casing a and moves the rod d away from the cam, thereby shortening the pump stroke.
Patent GB-1278823-A (GB)
Title: Circular knitting machines
Inventor: COOKE ALBERT EDWARD
IPC: D04B9/02
Filed: 1969-03-13
Abstract: 1278823 Knitting-machines TRIP-LITE Ltd 4 March 1970 [13 March 1969] 13166/69 Heading D1C A circular knitting machine having a plurality of yarn feeds 14 is equipped with a positive yarn feed mechanism 13 at least one of the feeds and comprises a yarn sensing device 21 acting on a yarn Y at a position between the positive feed mechanism 13 and yarn feeder 14 and means 12 to effect axial motion of the needle cylinder 10 in response to variations in tension of the yarn sensed by the sensing device. The sensing device 21 comprises a movable pin 47 which can be used in conjunction with photo-cells, piezo-electric crystals or contact switches to feed impulses to a control unit 23 which rotates a cam 42 which through a lever 43 lifts or lowers a lug 45 attached to the needle cylinder. Only one sensing device need be supplied irrespective of the number of yarn feeds, positive or otherwise, provided on the machine. As shown the machine which is of the rotary cylinder type has four positive yarn feeds driven by a belt 35 from a box 39 the output of which can be varied according to the dictates of a pattern chain 27 or equivalent through a control unit 25.
Patent GB-261623-A (GB)
Title: Improvements in or relating to cultivating implements
IPC: A01B31/00
Filed: 1926-05-25
Abstract: 261,623. Wylie, A. R. May 25, 1926. Soil-working implements; draught devices; seats; tools.-A soil pulverizing and packing implement comprises a number of independentlymovable cast-metal elements adapted to lie on the soil and having parallel longitudinal ribs on their under surfaces, and compression surfaces between the ribs to form the soil into ridges. Each element consists of a single casting 10 and is detachably connected to a cross-bar 13 by a clevis 12 and a pin or bolt 14, the clevis passing through an opening 11. A draught ring 22 is connected by links 21 to eye-bolts 20 in the crossbar 13. The longitudinal ribs 15 at the forward end have concave sides and a thin edge. Both the casting 10 and the ribs 15 are turned upwardly at the forward end, the ribs 15 getting shallower towards the front. The upwardly-inclined ends of parallel rear ribs 18 project between the upwardly-curved rear ends 17 of the ribs 15. Half-ribs at the sides of adjacent castings together form complete ribs 15. All the ribs 15, 18 have straight-edge portions lying in the same horizontal plane. A seat 25 is carried by a leaf spring 26 bolted to a cross-bar 23 fastened to two or more of the castings 10. Additional weights may be carried by the castings 10. For operating between rows of plants some of the elements 10 may be removed and the bar 23 removed or altered.