baber/WOPTO huggingface dataset:
Patent GB-1006934-A (GB)
Title: Improvements in or relating to crystal diodes
IPC: H01L21/00
Filed: 1962-05-21
Abstract: 1,006,934. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. May 21, 1962 [May 24, 1961], No. 19494/62. Heading H1K. Voltage limiting diodes with accurately reproducible characteristics are made from semiconductor bodies of one conductivity type which have produced therein a zone of the opposite conductivity type to form a PN junction and in which at least that part of the body retaining the one conductivity type and adjacent the junction has the concentration of conductivity type determining atoms increased from its original value. The zone of opposite conductivity type and the region of increased conductivity of the one type may be produced together, in one aspect of the invention, by alloying a neutral material to the semi-conductor body and diffusing impurities of both types into the melt, the impurities being chosen so that that which diffuses fastest in the solid semi-conductor is of the same conductivity type as the impurity originally present. In the embodiment described a P-type silicon wafer is placed across an aperture in the lid of a graphite boat, Fig. 2 (not shown), and a pellet of tin-arsenic alloy stuck with a waxy adhesive to the inwardly facing side of the wafer. During the subsequent heat treatment, carried out in a nitrogen atmosphere, the alloy pellet melts and is indiffused by aluminium vapour arising from a layer of powdered aluminium in the bottom of the boat. The wafer is cooled and provided with an aluminium electrode 8 to form the device shown in Fig. 1. The semi-conductor body contains an N-type zone 3 of recrystallized semi-conductor in which arsenic is the predominant impurity, a region 7 of increased P-type conductivity produced by rapid diffusion of aluminium from the melt, and an incidental extension 2 of the N-type zone 3 which is formed by the slower diffusing arsenic. The recrystallized alloy region 5 is substantially of tin but also contains arsenic, aluminium, and silicon. To illustrate reproducibility of characteristics diodes were made simultaneously and with identical treatment from silicon wafers of 0À08 and 1.5 ohm,cm. resistivity. Both diodes had Zener breakdown voltages in the range 6À1-6À2V. When similar wafers were subjected to the same treatment except that they were not exposed to aluminium vapour Zener breakdown voltages in the range 8À9-9V. and 40-45V. were produced respectively from wafers of 0.08 and 1.5 ohm.cm. initial resistivity. The method may be applied to produce a plurality of diodes in a single wafer which is subsequently divided into a number of wafers each provided with at least one device. The method can be used with germanium and A<SP>111</SP> Bv compounds and is not restricted to the use of the impurity materials of the embodiment described.
Patent GB-773263-A (GB)
Title: Improvements in or relating to juice extractors
Inventor: SCHREYER EDWARD PETER
IPC: A47J19/02
Filed: 1955-07-06
Abstract: 773,263. Graters; juice extractors. KENWOOD MANUFACTURING CO., Ltd. July 6, 1955, No. 19552/55. Class 28(2) Fruit &c. is pressed by a plunger 37 against a rotated shredding plate 27 inside a rotated bowl 25, the juice being centrifuged through a sieve 32 and through slots 26 in 25 and falling down to the sloping bottom of a removable polythene &c. liner 17 inside the outer container 13 to an outlet 15-22. The liner 13 has a central boss-like wall 13 at its bottom to prevent juice flowing down the motor drive shaft 14. The liner 17 has a turned over upper edge secured by a cover 34 and clamps 35. It is located in position by its outlet neck 17 filling in the opening 15. All the internal parts are easily removed for cleaning when the screw 29 is undone. In Fig. 2 (not shown) a fluted conical rotated head is provided for orange &c. halves, the shredder plate being dispensed with. Specification 746,496 is referred to.
Patent GB-1535972-A (GB)
Title: Dry developer particles for use in electrophotography and method for developing electrostatic images thereby
IPC: G03G15/09
Filed: 1976-05-12
Abstract: 1535972 Electro-photographic developer KIP KK 12 May 1976 [15 May 1975(2)] 19571/76 Heading G2C A dry developer particle for use in electrophotography comprises a thermoplastic synthetic resin material and a magnetic material in the form of particles dispersed in the resin material and said developer particle having a volume resistivity higher than 10<SP>14</SP> ohm. cm. to have magnetically attractive and electrically insulating properties. The resin may be an epoxy or styrene resin. In the Example a developer particle contains 30 wt. per cent polystyrene, 66 wt. per cent magnetite (particle size from 0À05 to 0À1Á) and 4 wt. per cent stearic acid and has an electric resistivity of 2 x 10<SP>14</SP> ohm. cm. As seen in the drawing, the developer particles 1 are applied to the surface of an electrically conductive sleeve 3 housing a permanent magnet 2 by a doctor blade 4. As the sleeve rotates and contacts the surface of an electro-photographic element 5 developer particles 13 are deposited on the element in accordance with the electrostatic latent image thereon.
Patent GB-1335592-A (GB)
Title: Information transfer system
IPC: H04Q9/14
Filed: 1971-06-09
Abstract: 1335592 Selective signalling BENDIX CORP 9 June 1971 [11 June 1970] 19609/71 Heading G4H An information transfer system using coded signals for identifying remote stations and commands to be executed at them, also transfers station condition information independently of the commands to display means. Circuit breakers on an aircraft can be tripped or reset from the flight deck by entering the 4-digit number of the breaker on a keyboard 23 (Fig. 2A, top left) preceded by actuation of a " clear " key and followed by actuation of a " trip " or " reset " key. The key actuations are coded at 95 and transmitted over lines 112A- 112D. The number of the breaker is also stored 97 for decoding 99 and display 101, and the " trip " or " reset " code is recognized at 117, 119 to acutate a clear generator 123 which automatically provides (from 95) a final " clear " code which is also transmitted. The clear generator 123 is also actuated if more than one key of keyboard 23 is actuated at a time, via inhibit 125 and OR gate 121. The transmitted breaker number is received at 113, stored 115 and converted 157 from BCD (binary-coded-decimal) to 1-out-of-10 decimal, each circuit breaker being provided with a gate 159 (only one shown) to recognize its number and route a " trip " or " reset " command, recognized at 165 or 167 via gate 161 or 163 to trip or reset coil 31 or 33. Detection of a fault 39 causes tripping via OR 43 and prevents resetting at gate 163. A " clear " code, detected at 124 (Fig. 2A) and 173 (Fig. 2B) clears stores 97, 115. Trip and reset commands can also be sent from manual switches 25, 27 (Fig 2A, left centre) having individual switches for respective breakers and groups of breakers, a " trip " or "reset" command being given according as the switch is pushed or pulled. A clock-driven BCD counter 131 is decoded at 133 to enable gates 135 (only one shown) in turn to scan the switches 25, 27, detection of an actuated switch delaying counting at 131 using 141, 139, 129 and, during the delay, gating the count at 131 via gates 143 for transmission via lines 112A-112D, clear generator 123 being actuated via OR 121 and output from keyboard 23 being inhibited at 94, via OR 147. Keyboard inhibit can also be provided via gate 151, this inhibit being overridable by an override 153. A reset inhibit switch 155 associated with switches 27 causes transmission of a " reset inhibit " code which is recognized at 172 (Fig. 2B) to prevent reset of any circuit breakers, for safety of maintenance personnel. An arrangement (Fig. 2B, bottom) similar to that used for scanning the switches 25, 27, scans the circuit breakers, and transmits the addresses of those tripped over lines 65A- 65D for display at 29 (after decoding 75), at 90 (CRT), and at 25, 27 (after decoding 81). An OR gate 91 (Fig. 2B, bottom) lights a lamp 93 if any circuit breaker is tripped.
Patent GB-1066977-A (GB)
Title: Improvements in photoelectric scanning and signalling device
IPC: A24C5/28
Filed: 1965-05-10
Abstract: 1,066,977. Cutting cigarette filter rods. AMERICAN TOBACCO CO. May 10, 1965 [May 8, 1964], No. 19643/65. Heading A2C. [Also in Divisions G1 and G3] The boundaries between alternate relatively transparent and relatively opaque lengths 11, 12 of cigarette filter rod are detected by illuminating the rod with light from an incandescent lamp 3 and detecting the light emerging from the rod at a point so axially displaced from the point of incidence, that direct light from the lamp cannot fall on the detecting photomultiplier 9. The photomultiplier output is differentiated and the negative pulses produced are suppressed to give a train of pulses corresponding to the changes from opaque to transparent lengths of filter rod. The phase of these pulses may be compared with a reference signal derived from a cutting blade, and the feed of the filter rod adjusted to maintain the cutting in the desired part of the filter rod.
Patent GB-633782-A (GB)
Title: Improvements in or relating to the manufacture of hydrogen peroxide
IPC: C25B1/30
Filed: 1947-07-22
Abstract: 633,782. Electrolytic production of hydrogen peroxide. ALCOCK, H. E. July 22, 1947, No. 19648. [Class 41] A process for the electrolytic production of hydrogen peroxide involves the addition to an electrolyte containing ammonium sulphate and sulphuric acid of one or more other soluble sulphates, the cationic portions of which give rise to persulphates which together with ammonium persulphate and persulphuric acid form a system with a higher saturation concentration of total persulphate than is possible in systems involving merely ammonium persulphate and persulphuric acid. The sulphates to be added may consist one or more of the substances : sodium sulphate, sodium bisulphate, lithium sulphate, magnesium sulphate, and zinc sulphate. The solution after electrolysis is subjected to vacuum distillation for the production of the hydrogen peroxide.
Patent GB-190742-A (GB)
Title: An improved wrench or spanner
IPC: B25B13/18
Filed: 1921-07-21
Abstract: 190,742. Pryor, T. J. July 21, 1921. Handgrip wrenches; sliding-jaw wrenches.-A wrench comprises a jaw C carried by a handle A and a laterally adjustable jaw J mounted on a lever B pivoted to and crossing the handle A, the jaw J having an inclined surface F to correspond with a similar surface on an adjacent part E of the wrench. The jaw C may be adjustable within the handle A by a nut D and screw, or the part E may be formed with a sleeve slidable on the shank of the jaw C and fixed in several positions by a pin engaging holes in the shank. A spring L separates the handles.
Patent GB-137255-A (GB)
Title: Improvements in and connected with electro-magnetic step-by-step and like mechanism
IPC: H02K37/02
Filed: 1919-02-14
Abstract: 137,255. Walker, C. L. Feb. 14, 1919. Motors with unwound iron armatures. - In step-bystep apparatus of the rotary field type, the receiver is provided with a toothed armature, toothed poles, and a toothed core inside the armature teeth, thereby increasing the number of steps in each rotation of the armature. In a modification, the teeth upon the poles or upon the core may be dispensed with. In the arrangement shown in Figs. 4 and 5, the pole-pieces b<1> - - b<6> are provided with teeth b, the fixed core c<1> with an equal number of teeth c, and the armature a<1> with a larger number of teeth a. The pole-pieces b<1> - - b<6> are mounted upon cores e<1> - - c<6> secured to a magnetic disk f and to a non-magnetic disk d<2>. The core c' is secured against rotation by providing its extension c<3> with a. collar f<3> which is secured to a fixed disk f<2> of flexible metal. The disk f is provided with a dished portion f<1> in order that slight axial movement may be given to the core c<1>. The core windings c<7> are wound to give opposite and adjacent poles and opposite polarity, and the diametrically-opposite pairs are energized singly or with an adjacent pair of opposite poles. In the modification shown in Fig. 7, the cores e<1>, e<2> &c. are provided with pole pieces b<1>, b<2> at each end. Disks a<3> are provided with teeth a which revolve in the spaces between the teeth b on the pole-pieces and the teeth c at each end on the magnetic core c<1>. Adjacent polepieces at each end may be of opposite or of like polarity. In a modification of this arrangement, the pole-pieces, core teeth and armature teeth at one end may be dispensed with and the cores e<1>, e<2> &c. mounted upon a magnetic plate f as in the arrangement shown in Figs. 4 and 5. In the modification shown in Figs. 8 and 9, the receiver consists of three similar parts each of which consists of a core c<1> provided with a winding g and teeth c, a disk a<1> provided with teeth a, and a disk b<1> provided with teeth b. The disks a are mounted upon a shaft o, and the disks b<1> are carried by magnetic cylinders f<6> connected to cores c<1> by disks f. The teeth on each armature disk a are equal in number to the teeth c on the core c<1> and disk b<1>. The teeth on the disk b<1> and core c' are angularly displaced with reference to the teeth on the other disks and cores so that when the cores c<1> are energized singly or in pairs the armature shaft o is rotated. Specification 137,150 is referred to.
Patent GB-692102-A (GB)
Title: Improvements relating to securing attachments to fibre and like building boards
IPC: E04B9/24
Filed: 1949-08-12
Abstract: 692,102. Building boards. HAY, H. M. Aug. 11, 1950 [Aug. 12, 1949], No. 19781/50. Divided out of 692,084. Classes 20(iv) and 87(i) [Also in Group XXV] A fibre or like building board a is reinforced by securing laths thereto by helical wires c, each provided with a flat spirally coiled collar c<SP>1</SP> and an eye c<SP>2</SP>. In one form, a lath b of L or channel form is arranged between the collar c<SP>1</SP> and the board a. In another form, a rod or tube of circular form is received in the eye c<SP>2</SP>. In a further form a lath of inverted T-form is received in a triangular eye, the collar c<SP>1</SP> being omitted. Specification 530,192 is referred to.
Patent GB-440745-A (GB)
Title: Improvements in or relating to high frequency variable coupling or attenuation devices
IPC: G01R29/08
Filed: 1934-07-06
Abstract: 440,745. Inductances. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, SMITH, S. B., 1, Braemar Avenue, and WRIGHT, F. M., 65, First Avenue, both in Chelmsford. July 6, 1934, No. 19919. [Class 37] [See also Group XL] A variable high-frequency coupling designed for use in estimating distances by the rate of attenuation of wireless waves, particularly short waves, consists of a rotatable disc or screen b provided with a slot f, as shown in dotted lines on Fig. 1, so as to vary the coupling between two inductance coils or condensers as the disc is rotated. The coupling-coils h are shown in Fig. 3, which is a section through the line A A in Fig. 1. They are mounted on adjustable blocks e housed inside metal tubes d projecting from each side of the casing a enclosing the slotted disc. The coils may be replaced by condenser plates. Specification 374,978 is referred to.
Patent GB-147872-A (GB)
Title: Improvements in and relating to superheaters
IPC: F22G7/14
Filed: 1920-07-09
Abstract: 147,872. Schmidt'sche Heissdampf- Ges. Feb. 25, 1915, [Convention date]. Fire and smoke tube superheaters.-In a superheater having its tubes connected to headers arranged one in front of the other, the rear header projects beyond the front header, and the tubes are so connected to the projecting face of the rear header as to be readily accessible from the front. The ends of the superheating-tubes d in an horizontal row of smoke-tubes are welded to tubes h, i placed opposite the row of smoke-tubes and connected by means of detachable bridge-pieces m to the faces of wet and superheated steam headers f, g, the rear header being made wider than the front header.
Patent GB-673321-A (GB)
Title: Toy
IPC: A63H18/02
Filed: 1950-08-10
Abstract: 673,321. Wheeled toys and tracks. OPIE, E. J. Aug. 10, 1950, No. 19931/50. Class 132 (iii) Two toy self-propelled wheeled vehicles run on two tracks of channel section which cross one another e.g. at a road-rail crossing, a vehicle approaching the crossing on one track actuating means for mechanically braking a vehicle which is approaching the crossing on the other track. In Fig. 2, a platform 10 is pivoted on a rod 12, the platform being normally raised by a light spring 15 and lying along the portion of the main track 1 approaching the crossing. An L-shaped extension 17 attached to the platform engages one end of a lever 19 which extends in the direction of and beneath the secondary track section 2 of the crossing. The lever 19 is pivoted at 20 and its other end engages a lug 23 of a pivoted ramp 21. When a train approaches the crossing and moves on to the platform 10, the platform is depressed by the weight of the train, the ramp 21 thereby being raised, and a brake lever on a road vehicle approaching the crossing along track 2 being actuated to prevent a collision. When the train has cleared the platform 10, the latter is raised and ramp 21 is lowered to release the brake lever allowing the road vehicle to restart. One spring 15 may be dispensed with by suitably balancing the moving parts of the crossing mechanism.
Patent GB-481011-A (GB)
Title: An improved machine for beating and dressing furs and the like
IPC: D06G1/00
Filed: 1937-07-19
Abstract: 481,011. Beating furs, fabrics, and the like; raising nap. HASKIN, S. July 19, 1937, No. 19940. [Class 138 (i)] [Also in Group VIII] A machine for beating furs, fabrics, and the like, for cleansing or nap-raising purposes, comprises a plurality of flexible thongs 12 carried by a rotating shaft 9. The latter, with its driving motor 6, is carried by a frame 5 pivoted to a stand 1 and adjustable thereon by means of a quadrant and pawl 2, 21. By tilting the frame, the beating effect of the thongs on furs or the like, supported on a table 23, is varied. The thongs may be passed diametrically through holes in a sleeve 13, secured to the shaft 9, or looped in slots 16 in the sleeve, Fig. 5. The thongs are stiffened near the sleeve by metal tubes 24, or by coiled wires, in order to prevent their entanglement. The sleeve 13 may be detachable so that it can be replaced by a brush, or may be arranged at the end of an extended flexible shaft, for use in inaccessible places.
Patent GB-655131-A (GB)
Title: Clothes-peg
IPC: D06F55/00
Filed: 1948-07-27
Abstract: 655,131. Clothes pegs. HANSEN, J. July 27, 1948, No. 20007. Convention date, Dec. 18, 1947. [Class 44] A one-piece clothes peg of thermoplastic material, wood, hard rubber or the like, comprises a rear wall 1, Fig. 1, and front wall 2, the line-receiving space 5 between them being curved laterally. In the rear wall 1, a loop-shaped slot 7. Fig. 2, delineates a tongue 8 and on pressing the peg over clothes on a line, the edges of the rear wall 1 are pressed outwardly and force the tongue 8 against the clothes to increase the grip. The tongue-like front wall 2 which is narrower than the rear wall 1 is formed with a finger recess 6.
Patent GB-990416-A (GB)
Title: Improvements in or relating to electrical connectors
Inventor: HENLEY GEOFFREY WALTER
IPC: H01R13/514
Filed: 1961-06-02
Abstract: 990,416. Two-part couplings. PAINTON & CO. Ltd. May 30, 1962 [June 2, 1961], No. 20042/61. Heading H2E. The insulating bodies of plug-and-socket connector halves 1, 2 are composed of moulded components such as 3, 23, 33 with recesses 11 which co-operate with the adjacent component to define contact-receiving cavities. The components, which are of synthetic resin, may be resilient, and may be of different colours, are interfitting, having tongues 4, 24 and corresponding recesses 8, and are additionally secured together by a rod 10 passing through central holes 9 in the components, an end plate 43, and brackets 17. The halves 1, 2 comprise identical component blocks which are each formed with two recesses 11 or 1 1a having slots 13, 14 at either end. Plug contacts 15 or socket contacts 16 may be inserted into the cavities between the co-operating flat and recessed faces of adjacent blocks. Each plug contact 15 extends through slots 13, 14 to provide respectively a blade portion P and a wiring tag S, and is locked into its cavity 11 by stamped-out tags T. Each socket contact 16 consists of a strip bent as shown to form a wiring tag W and contact portions B which fit into cavity 11a and engage a mating plug blade P when the latter is passed through the flared entry slot 13a. Grooves 21 and ribs 22, 22a on the component blocks provide air spaces to prevent shortcircuiting due to surface moisture. Contacts 15, 16 are made of silver-plated phosphor bronze. In another embodiment (Figs. 4, 5, not shown) each component contains three recesses and therefore the assembled connector has three rows of mating contacts.
Patent GB-187723-A (GB)
Title: Improvements in or relating to gill-drawing frames
IPC: D01H5/04
Filed: 1921-07-26
Abstract: 187,723. Holdsworth, W. July 26, 1921. Gill boxes.-The cam D at the end of the upper screw is placed in the correct position over flat surfaces 8 on a stud 7 and is secured by a collar 10 screwed on to the end of the stud. The collar enters a hole in the end frame and acts as a bearing surface for the screw. The screw thread on the stud is of opposite hand to the traversing screw to tighten the collar during the working of the machine.
Patent GB-422568-A (GB)
Title: Process of manufacturing polishing substances, and the products of such process
IPC: C11D11/00
Filed: 1933-07-15
Abstract: A finely powdered, dry, waxy polishing material is prepared by melting natural or artificial waxes, or mixtures thereof, dispersing the molten mass in a liquid of the same specific gravity, cooling the dispersion to a temperature below the melting point of the wax or wax mixture, separating the waxy substance, and drying the separated material, preferably under reduced pressure.  The liquid used should preferably be one having little, if any, solvent action on the waxes, and having a boiling point at least 10--20 DEG  F., higher than the melting point of the waxes to be dispersed.
Patent GB-1461839-A (GB)
Title: Coordinate measuring machines
IPC: G01B5/008
Filed: 1974-05-07
Abstract: 1461839 Co-ordinate machines BENDIX CORP 7 May 1974 [9 May 1973] 20081/74 Heading G1M One carriage 10, Figs. 1,2, which moves along the Y axis is supported by wheels 18, 20, 22 running on a pair of boom members 12, 14 forming part of another carriage assembly 16 similarly supported for movement along the X axis. The carriage 10 supports a vertically movable probe 32 and is driven by a motor 50 through gears and a magnetic particle clutch 56 allowing pulse control of the drive. In order to decelerate the carriage a pair of magnetic particle brakes 62, 64 connected to gear trains are employed to brake rotary drive bearing wheels 20, 22. The wheels 20 and 22 run in grooved ways 42 which constrains the carriage 10 against movement in the X direction, but the wheel 18 runs on a flat surface 38 and the carriage 10 is maintained in engagement with the ways by spring mounted rollers 44. A grating 46 carried by the boom 14 co-operates with a reading head 48 carried by the carriage to produce a train of electrical pulses in the form of digital signals.