baber/WOPTO huggingface dataset:
Patent GB-1170705-A (GB)
Title: An Insulated Gate Type Field Effect Semiconductor Device having a Breakdown Preventing Circuit Device and a method of manufacturing the same
IPC: H01L27/02
Filed: 1968-02-19
Abstract: 1,170,705. Semi-conductor devices. HITACHI Ltd. 19 Feb., 1968 [27 Feb., 1967], No. 8030/68. Heading H1K. Breakdown of the gate insulation of an IGFET is prevented by providing a clamp diode in parallel with the gate insulation, the diode comprising a region formed in the substrate and having a thickness less than that of the source and drain regions. Since the diode region is thinner its edge curvature is greater than that of the source and drain regions so that its reverse breakdown voltage is lower. As shown, Fig. 2, the device is produced in a wafer 11 of N type silicon by oxidizing the surface, photoetching and diffusing-in boron to form deep P type source and drain regions 12, 13, forming a further aperture and diffusing-in boron to form a shallow P type diode region 16, removing the oxide between the source and drain region 12, 13, and forming fresh thin oxide layer 14 for the gate insulation, removing the oxide from parts of the source, drain, and diode regions, 12, 13, 16, evaporating a layer of aluminium on to the surface and selectively removing portions to produce the source and drain electrodes S, D, the gate electrode 20c and a diode contact 20b provided with an input terminal section 20a. The diode contact 20b is connected to the gate electrode 20c so that the diode PN junction 17 is in parallel with the gate insulation 14, and in a practical arrangement the connection between 20b and 20c would comprise part of the deposited aluminium layer. In a modification, Fig. 5a (not shown) the diode region has a larger lateral extent and the input terminal is connected to one end of the P type region and the gate electrode is connected to the opposite end. The P type diode region acts as a resistor in series with the gate lead, and together with the capacitance of the diode junction forms a low pass distributed RC filter. The periphery of the diode PN junction adjacent to the input terminal connection acts as the clamp diode. The invention may be applied to P or N channel enhancement or depletion mode IGFETS and the diode may be of PNP or NPN construction and may be suitably biased in accordance with the polarity of the input signal. It is mentioned that silicon nitride may be used as a masking material.
Patent GB-301299-A (GB)
Title: Improvements in machines for marking skins by printing or perforating
IPC: C14B1/14
Filed: 1928-03-16
Abstract: 301,299. Sanglier, A., Sanglier, R., and Sanglier, H. Nov. 26, 1927, [Convention date]. Platen machines; inking-apparatus. - In a power-operated machine for applying printed or perforated marks to prepared or raw skins comprising a crank-driven plunger adapted to carry either a printing-stamp or a perforating-die, the drive is transmitted to the plunger by means of a spring when the printing-stamp is employed, and a rod is inserted in the plunger to transmit the drive when the perforating-die is employed. The machine is provided with an operation counter, and the printing-stamp and perforating-die are associated with apparatus for printing or perforating consecutive numbers. In the machine shown in Figs. 2 and 3, a printing-stamp 22 or a die having perforating-points is mounted on a plunger 15 which passes through a guide 20 on the framework 2 and is formed with a bore 14 containing a piston 13 and a spring 16. The piston is connected by a rod 9 to a pin 6 on a balanced disc 5 which is driven through reduction gearing by a motor 4. A brake is applied to the disc when the motor is stopped. When the printing- stamp is employed, the plunger is driven yieldingly by the spring 16, but when the perforating- die is employed a rod 19 is inserted so that the die is moved yieldingly into contact with the skin and is thereafter actuated positively. The printing-stamp is inked by a pad detachably mounted in a support 24 which is pivoted to cheeks 26 on the framework and is connected to springs 27, the support being displaced by rollers 30 when the plunger descends. The pad consists of a feltcovered container provided with a yielding top consisting of a perforated steel plate having a cloth cover. When the stamp descends, ink is pressed into the cover, and when the stamp leaves the pad, the plate resumes its original shape and surplus ink is sucked out of the cover. The pad can be readily replaced by one charged with ink of a different colour.. When the perforating-die is employed, the ink-pad support is moved aside and secured by a screw, and a box or guard 33, Fig. 2, is secured to arms 34 on the framework, the box having apertures for the passage of the die and rollers 30, and the front of the box being transparent. The bottom of the box serves to strip the skin from the die. An operation-counter 39 is driven by the motor shaft or other moving part.
Patent GB-591849-A (GB)
Title: Improvements relating to two-rate fluid pressure drain valve
IPC: B60T15/54
Filed: 1940-05-07
Abstract: 591,849. Fluid-pressure brakes. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd. May 7, 1940, No. 8211. Convention date, May 31, 1939. [Class 103 (i)] [Also in Group XXIX] A vent valve device for releasing fluid under pressure, particularly for auxiliary reservoirs and brake cylinders of braking equipments, comprises a lever adapted to effect opening of the valve and to keep it open while the lever is held displaced from a normal position to a predetermined amount and adapted to be further displaced whereupon the valve device is held open to effect continued venting when the lever is released. In the construction shown in Fig. 2, as having the lever 24 held by the operator to maintain a piston 3, working in a cylinder 2, in position to vent fluid from an outlet pipe 18 through a groove 19 in the cylinder head 11, a chamber 20, a port 21 leading into cylinder 2, and a passage 23 leading to discharge ports 10 a further movement of the lever 24 will lift the piston 3 so as to uncover a port 22 below the cylinder port 21, which is covered as the port 22 is opened; the pressure fluid then escapes through the port 22, passing through a narrow annular passage 28 on its way to the ports 10 and producing a pressure below the piston 3 which will maintain it in position to continue venting when the operator releases the lever 24. Finally when the pressure in the reservoir is sufficiently lowered the pressure of a spring 14 will force the piston 3 down so that the passage leading to the discharge ports 10 is closed by means of a packing 6 on the lower side of the piston.
Patent GB-625804-A (GB)
Title: Improvements in and relating to electromagnetic switches
IPC: H01H50/30
Filed: 1945-04-03
Abstract: 625,804. Electromagnetic switches. BRITISH THOMSON-HOUSTON CO., Ltd. April 3, 1945, No. 8214. Convention date, April 4, 1944. [Class 38(v)] A contactor is operated by abutting plunger armatures 26, 27 pivotally connected to arms of bell-crank levers 28, 29, the other arms of which have a pin and slot connection 32, one of these latter arms being provided with a toothed segment 33 engaging a gear 34 coupled to a crank 36 actuating a rotatable cross-bar 17 carrying moving bridge contacts 21, 22, 23. The crank 36 rotates through 180 degrees from the "on" position, Fig. 1, to the "off" position to which the levers 28, 29 are biassed by springs 39, 40 on their fixed pivots 30, 31; these positions being dead-centre crank positions to render the contactor shockproof. The cross-bar 17, pivoted at 10, 11 has a U-shaped member 38 welded to it which has a swivel connecting with a link 37 pivoted to the crank 36. The contacts 21, 22, 23 are resiliently mounted on a cross-bar 20 carrying guide-pins at its ends and pivoted at 18, 19, to arms 15, 16 of the cross-bar 17. The stationary contacts 52 are mounted in insulating cups 53 carried on insulating blocks 51 and are connected to terminal plates 57. An operating coil 24 has shock proof mounting within the magnet frame 45 between insulating pieces 73, 74 having four projections 75, 76 engaging metal members 77 and is pressed to the right by two springs 83. Guides for the armatures 26, 27 are secured by screws 80. The lever 29 carries an "off" position stop 40a, and by a second pin-and-slot connection actuates an auxiliary switch arm 61, which bridges contacts 66, 67 when the contactor is "off." The pivots 30, 31 and the shaft to which the crank 36 and the gear 34 are secured, are all carried by a bracket 42.
Patent GB-403608-A (GB)
Title: An improved device for use by smokers and substances for use with same
IPC: A24F42/20
Filed: 1932-03-19
Abstract: 403,608. Tobacco and like smoke containers. DALINDA, J. Z., 63 Street, New York, U.S.A. March 19, 1932, No. 8261. Void [Abridged as open to inspection under Sect. 91 of the Acts March 21, 1932]. [Classes 81 (i), 81 (ii), and 130.] The smoke from tobacco and other vegetable substances is stored in a cartridge a insertable in pipe or holder. Deleterious substances such as nicotine, pyridine, ammonia and sulphuretted hydrogen are removed and others with disinfectant or curative properties such as eucalyptus or licorice added before the smoke is supplied by pump or syringe to the cartridge. Absorptive material may be enclosed. The cartridge may be mounted in a cap g on turning which smoke passes by holes d and passages e to a collecting chamber f. Air passages k and a valve m responsive to suction at the mouthpiece are situated in the end closure of the chamber f. A helical tube mav be connected to the cartridge nozzle, and the outflow from the latter may be controlled by a valve connected to a lever the end of which is adjacent to the mouthpiece c.
Patent GB-214232-A (GB)
Title: Device for the automatic operation of hypodermic syringes
IPC: A61M5/20
Filed: 1924-04-02
Abstract: 214,232. Didone, A. April 9, 1923, [Convention date]. Syringes.-A device for operating hypodermic syringes in an automatic manner comprises a tube 1 within which are telescopically arranged tubes 3, 7, 9. The tube 3 terminates in a ring 4 movable under the action of a spring 5, the other end of which bears against the plug 6 closing the tube 1. A lever 16 is carried by the tube 3 and is provided with a catch 17 adapted to engage a recess 18 in the tube 1. The tube 7 is rigidly connected to the syringe carrier 8, and the tube 9 carries the striker 11 and an inclined plane 28. The tube 9 is closed at one end by a rotatable plug 12 by means of which, through the action of a threaded pin 13 and travelling nut 14, the tension of a spring 15 can be adjusted; the other end of the spring 15 bears against the ring 4. The tube 1 carries a pivoted lever 20 provided with a. plate spring terminating in an extension 22 which engages slots in the tubes 1 and 7 and so can be projected into the path of the tube 9. The plug 6 carries a fork 26 the stem of which is slidable in the plug and can be clamped in any desired position therein by means of the screw 25. In operation, the appliance is brought from the position of rest shown in Fig. 1 to the loaded condition shown in Fig. 2, by pushing the syringe carrier 8 first to the left until the catch 17 is engaged in the recess 18. and then, together with the inclined plane 28 and tube 9, to the right, until the catch 22 is able to project, through slots in the tubes 1 and 7, into the path of the tube 9; the spring 15 is thus retained in extended position. The loaded syringe is then secured in the carrier 8. In making the injection, the apparatus is applied to the patient's skin and the lever 20 pressed downwards. This raises the extension 22 clear of the tube 9 which, with the striker 11, advances under the action of the spring 15. The striker drives the syringe forward bodily, the needle passing into the patient, until the tube 7 has reached the end of its path, after which the striker operates the piston-rod and the liquid is injected. The inclined plane 28 finally engages the edge 29 of the lever 16, which is thereby raised and the spring 5 released. The spring 5 pushes back the tube 3, which in turn forces the tube 7 to its initial position.
Patent GB-569462-A (GB)
Title: Ignition systems
IPC: F23Q7/10
Filed: 1944-05-03
Abstract: 569,462. Lighting burners. MAY, P. (Robertshaw Thermostat Co.). May 3, 1944, No. 8348. [Classes 75 (i) and 75 (iii)] [Also in Group XXIX] To provide a time delay sufficient for the ignition coil 40 of a gas burner 12 to reach an igniting temperature the gas supply pipe is fitted with a solenoid-operated valve 24 shunted by a pivoted mercury switch 44 and arranged in series with the coil 40, a resistor 36, and a main switch 28 in the secondary circuit of a mains-energised transformer 32. The switch 44 is of the type in which mercury can flow freely when closing, but the flow is restricted when opening. When the main gas cock is opened a dial 20 on its stem 18 closes the switch 28 to complete the circuit to the coil 40 and to an electromagnet 46 which moves the switch 44 to the open position. The mercury switch can be replaced by any other relay opening slowly but resetting instantaneously. A thermostatic regulator 14 may be interposed between the main cock and the valve 24.
Patent GB-293096-A (GB)
Title: Improvements in brakes for wheeled vehicles
IPC: F16D51/12
Filed: 1927-03-28
Abstract: 293,096. Crockett, R. A. March 28, 1927. Blocks acting on drums. - A .brake for vehicles comprises a. pair of sleeves 7, 8, Fig. 1, having eccentric cam surfaces and arranged coaxially and in parallel planes and adapted to operate radial plungers 12 for the expansion of two independent sets of brake shoes 17, 18 against a drum 19. The plungers 12 in guides 13 on the dust-cover 26 carry rollers 11 against which the cams abut. The cam sleeves 7, 8 carry cranked extensions 22, 23 passing through arcuate slots in the dust cover 26 and are connected to the brake-operating levers 20, 21. A collar 14 is arranged on the end of the sleeve 15 carrying the cam sleeves 7, 8 to retain the sleeves in position and to provide connections for one end of the brake shoe return springs. In the modification shown in Fig. 7, the cam 27 has a dove-tailed connection with the radial plunger 28, to provide a positive returning means for the shoes. In a modification the cam sleeves 7, 8 are directly mounted on a sleeve 3 secured to the axle casing by pins 2. In a further modification, these sleeves are carried by an integral extension of the axle casing.
Patent GB-1220794-A (GB)
Title: Method and apparatus for making a facsimile of a skin ridge pattern
IPC: G06T7/00
Filed: 1969-02-17
Abstract: 1,220,794. Thermochromic impressions of fingerprints. LING-TEMCO-VOUGHT Inc. 17 Feb., 1969 [15 Feb., 1968], No. 8455/69. Heading B6C. [Also in Division G5] A thermally actuated imaging device 10 comprises a support 12 and a layer 11 of a material which changes colour with temperature and shows a colour-hysteresis effect in doing so Heating element 14 raises the temperature of layer 11 until it changes colour, then the layer is cooled to a temperature intermediate the temperature at which it changed colour on heating and that at which it will change colour on cooling. Application of a body at less than the lower colour-change temperature, such as a finger tip, results in a local colour change, which is preserved as long as the layer is held at the intermediate temperature. If the layer 11 is of cuprous mercuric iodide (Cu 2 HgI 4 ) a fingerprint image appears on it in red against a black background, and may be photographed, suitably by a self-processing camera. Compounds having the general formula M 2 M<SP>1</SP>I 4 , where M is Ag<SP>1+</SP>, Cu<SP>1+</SP> or Tl<SP>1+</SP> and M<SP>1</SP> is Hg<SP>2+</SP> or Cd<SP>2+</SP> are stated to be similarly usable, as are certain compounds with the general formula MM<SP>1</SP> 2 X 4 , where M is Zn, Cd or Hg, M<SP>1</SP> is Al, Ga or In and X is S, Se or Te.
Patent GB-1103434-A (GB)
Title: Improvements in or relating to detonatable compositions
IPC: C06B21/00
Filed: 1965-02-26
Abstract: An electrically conductive composition, detonatable by the passage of an electric current, comprises an initiating explosive compound mixed with an electrical conductor disposed on an inert support material. The electrical conductor, e.g. graphite, carbon black, metal powder or a conductive oxide, is mixed thoroughly with the support material, e.g. aluminium oxide, barium sulphate, or barium nitrate, and the product gently mixed with the explosive compound, e.g. lead trinitroresorcinate.  When the support material is water-soluble, it may be moistened with water so that the electrical conductor adheres to its surface, and then dried before mixing with the explosive compound.
Patent GB-950579-A (GB)
Title: Switching equipment such as used in telecommunication exchanges
IPC: H04Q3/00
Filed: 1962-03-06
Abstract: 950,579. Telephone exchange equipment. STANDARD TELEPHONES & CABLES Ltd. March 6, 1962 [March 7, 1961], No. 8523/62. Heading H1L. [Also in Division H4] In a partially equipped exchange the full number of trunks are provided between successive switching stages A, B and are connected between outlet and inlet terminals according to the ultimate pattern of the trunking arrangement, jumpering between terminals being employed to interconnect the switching units that are actually provided. As shown, the switching units have 8 inlets and 4 outlets. If there are an odd number of units in stage A, as in Fig. 3, 4 of the trunks may by-pass stage B in order to avoid a half-used unit in that stage.
Patent GB-343350-A (GB)
Title: Improvements in and relating to gramophones
IPC: G11B17/02
Filed: 1930-03-17
Abstract: 343,350. Brakes applied by special responsive means. ROBERTS, J. H. T., Dashwood House, Old Broad Street, London. March 17, 1930, No. 8597. [Class 103 (i).] A governor adapted to maintain a .substantially constant angular velocity of a gramophone record is fitted with a wheel 2 which is arranged to engage the edge of the turntable or record or the upper surface of the record, and the mounting of the governor is such that it is adapted to be shifted into or out of operative position in engagement with the turntable or record. The wheel 2, Figs. 1 and 2, has a rubber tyre 3 engaging the edge of the turntable 1 and is adapted to drive the governor spindle through gearing 12, 13. The governor mechanism is contained within a case 4 which is adapted to be moved about a screw or rivet 5, and a spring 7 mounted on a pillar 8 is adapted to engage the case and hold the wheel 2 in contact with the turntable 1. The governor may be held out of the operative position by a clip. Instead of the gear wheel 12, 13, a disc mounted on the governor spindle may engage frictionally with the wheel 2. Alternatively, the wheel 2 may be mounted on the governor spindle and engage with the upper surface of the record, the device being pivoted so as to be movable both vertically and horizontally. In a further modification, the governor may be of centrifugal type comprising weights 19, Fig. 4, on spring arms 25 carried by a rotary member 18 driven either by gearing or otherwise from a friction wheel in contact with the record or turntable, and co-operating with a collar 20 adjustable in diameter by a screw 21 and block 23. The governor device described is intended to be used in addition to the usual governor employed with the gramophone and to be operative when a record is to be driven at a substantially different speed, say 30 revolutions per minute, from that of normal working.
Patent GB-1371262-A (GB)
Title: Injection moulding apparatus
IPC: B29C45/28
Filed: 1972-02-24
Abstract: 1371262 Injection moulding machines H J DRAZICK 24 Feb 1972 [25 Feb 1971] 8631/72 Heading B5A Injection moulding apparatus comprises upper and lower die plates 32, 18 and at least one die cavity 36 therein, a first material feed passage 50 in one of the die plates, a second passage 66 between the first passage and the die cavity, the first passage 50 intersecting the second passage 66, and valve means 76 in the second passage controlling an orifice 70 leading into the cavity 36 in response to a pressure differential the valve means including a bore and heating means 84 disposed within the bore to maintain the moulding material in a fluid condition. The pressure of material injected through an orifice 48 and passages 50, 66 opens the valve 76, and when the injection pressure is reduced the valve 76 is closed again by a spring 82. The valve 76 includes a needle tip portion 104 which may extend a minimal distance into the cavity 36. Electric heaters 60 and 84 are provided in the passage 50 and within the valve 76 respectively. Modifications.-Figure 1A (not shown) shows a modified head portion of the valve member (78a) and closure plug (74a) incorporating a plurality of dished spring members (87). Instead of being arranged vertically, the valve assembly 66-76 may be mounted at an angle to the vertical (Fig. 5, not shown).
Patent GB-214605-A (GB)
Title: Rotary drilling equipment for boring wells and the like
IPC: E21B3/04
Filed: 1924-04-07
Abstract: 214,605. Union Tool Co., (Assignees of Davidson, W. D.). April 19, 1923, [Convention date]. Bore-hole apparatus. - In a rotary drilling- apparatus wherein split bushings, as 10, 11, are employed between a rotary table 4 and the drill stem, locking bars 1 with hooked ends are engaged in slots 12 in the table and engage the bushings to prevent lifting thereof when the drill stem is raised. In a modification, the hooked ends of the locking bars are engaged with slots in the heavier outer bushing 10 to jprevent withdrawal of the inner busihng 11.
Patent GB-567849-A (GB)
Title: Cleaning device for hygienic purposes
IPC: A61M3/02
Filed: 1943-06-01
Abstract: 567,849. Cleaning device for personal use. TRIADOU, C. A. M. June 1, 1943, No. 8760. Convention date, Sept. 12, 1942. [Class 81 (ii)] A cleaning device for the intimate and private hygiene of the person, to be used in combination with a w.c., comprises a water-mixing mechanism, adapted for connection to supplies of cold and hot water and a flexible pipe leading from the outlet thereof to a hollow block, having an inclined side-face, whereby water may be sprayed &c. on the person to effect cleaning. Cold and hot water is supplied to an automatically and thermostatically controlled chamber 20 through pipes 21, 22, each of which may be separately controlled by a valve 23. From the mixing chamber 20 the water flows through an outlet 24, governed by a spring-biassed valve operated by the weight of the cleaning block C through a pivoted lever 40. The flexible pipe 51 is connected to a pipe 57, about which is positioned the handle portion 58, the flow of water through the block 55 being governed by a spring-biassed finger-manipulated valve 66. A threaded disc . 78 is screwed into the sloping face 74 of the block 75, holes extruding through the disc 78 to effect distribution of the cleaning fluid. In a modification automatic mixing in the chamber 20 is replaced by manual mixing, and the outflow of water from the mixing tank is governed by a manually-operated valve. In this instance, the valve may be omitted from the block 55.
Patent GB-997647-A (GB)
Title: A gas pipe and filling-element assembly for a bottle filling machine
IPC: B67C3/28
Filed: 1964-03-03
Abstract: 997,647. Bottle filling machines. HOLSTEIN & KAPPERT MASCHINENFABRIK PHOE. NIX G.m.b.H. March 3, 1964 [April 10, 1963], No. 8855/64. Heading B8T. A gas pipe 9 which screws into a movable valve 5 of a filling element of a bottle filling machine is prevented from accidentally becoming unscrewed, by cutting the screw-threads on a part 16 of the pipe which is of a relatively large diameter and by having a conical part 17 above the part 16 as a push fit within the element, so acting as an anti-turning device.