baber/WOPTO huggingface dataset:
Patent GB-576683-A (GB)
Title: Improvements in bombs or the like intended to be dropped from aircraft
IPC: F42B10/46
Filed: 1932-07-29
Abstract: 576,683. Bombs. DOUGLAS, G. P. July 29, 1932, No. 21444. [Classes 9 (i) and 9 (ii)] An aerial bomb, more particularly bombs floatable in water, comprises a streamlined false nose of low drag which disintegrates under pressure of water, through a pitot tube 7 near the centre of the nose, to uncover the nose proper which has a greater drag, in order to limit the depth to which the bomb sinks in water before rising again towards the surface. This depth at which the nose breaks is controlled by adjusting the size of the pitot orifice. The nose is formed of two or more parts 3, bevelled at 4. The inner end of the pitot orifice 7 fits round a centre block 6. The nose is made of wood or aluminium and is attached by easily frangible pins &c. The interior of the nose may be filled with grease. Modifications are shown in which on disintegration the parts of the nose hinge about fulcra between the outer edge and the centre of the nose proper, and also in which the parts slide on the nose proper.
Patent GB-795478-A (GB)
Title: Improvements in or relating to the production of semi-conductor elements
IPC: H01L21/18
Filed: 1955-07-25
Abstract: 795,478. Semi-conductor devices. SIEMENSSCHUCKERTWERKE AKT.-GES. July 25, 1955 [July 27, 1954], No. 21460/55. Class 37. A semi-conductor device comprises a basic semi-conductor body of silicon, silicon carbide or like crystalline material, having a metallic contact thereto, and positioned between the body and the contact an alloy of germanium and the basic semi-conductor. The germanium comprises a significant impurity to determine its conductivity type, and may be arranged to provide a PN junction or an ohmic contact to the body. Fig. 1 shows a rectifier comprising a high purity silicon disc 11 which is P-type (owing to traces of boron), to which is alloyed an N-type germanium region 12. Donors such as antimony or arsenic diffuse into the silicon from the germanium providing a PN junction between disc 11 and N-type region 13. A barrier free contact is established between conductor 15 and alloy layer 12 by means of a lead-antimony solder. A barrier free contact is also established to P-type zone 11 by means of an alloyed zone 16 consisting of aluminium and silicon, to which is soldered a copper of silver plate 17 having a large surface to facilitate cooling. Fig. 2 shows a transistor in which a P-type silicon body 21 has a first junction electrode applied to one face, and a second junction electrode distributed on another face in depressions which are connected together by lead 20. The PN junctions are provided as in Fig. 1 by providing alloy regions 22, 23 of N-type germanium and silicon. Plate 27 connects the raised portions with aluminium contacts 26, to provide the ohmic base electrode. In an alternative arrangement, a transistor is provided by forming two junction electrodes by means of an alloy region 12 as in Fig. 1, and applying the base electrode which is formed by alloying germanium of the same conductivity type as the body to one end of the body. In this case N-type silicon is used, and the P-type germanium comprises indium or gallium. In a further example, a rectifier is provided by using a main body of intrinsic conductivity silicon, having a first alloy region formed with P-type germanium, and a second alloy region formed with N-type germanium. The invention avoids mechanical stresses which occur when impurity material is alloyed direct to the silicon or like body.
Patent GB-722259-A (GB)
Title: Method of and apparatus for producing sulphuric acid
IPC: C01B17/76
Filed: 1951-09-12
Abstract: In producing sulphuric acid by the contact process, the gases coming from the contact chamber are converted at least in part by cooling, and if desired by the addition of water or water vapour, into a sulphuric acid mist which is separated by passage through a porous filter at a speed which is higher than corresponds to the break point in the logarithmically plotted pressure drop-speed diagram.  The filters may be ceramic plates or candles, packings of glass, quartz, or rock wool, or acid resistant fabrics or felts in single or stratified layers.  The pressure drop across the filter may be at least 200 mm. of water, e.g. for a filter of pore size 20-200 m , 5-20 mm. thick at a gas flow of 300-1,000 cu. metres per hour per sq. m. of filter area, although the pressure drop may be less, say 100-150 mm., with mists of the coarsest drops.  The critical speed for a filter is determined by model tests.  Water or water vapour may be added before the contact vessel, in a cooling tower, on before the filter, to vary the acid concentration, which may be up to oleum, or, by slow addition, the size of the mist drops.  The gases from the contact vessel may be cooled in a tower, e.g. with sulphuric acid. The cooling tower may be empty and acid atomized thereinto.  The cooled dense mist may be passed to a filter sprinkled with heated sulphuric acid, with consequent gradual addition of water vapour to the mist, due to the slightly higher vapour pressure of the acid compared with the mist, and resultant coarse mist formation, due to the low water vapour pressure difference.  In one example, sulphur dioxide, from the combustion of hydrogen sulphide, and water vapour in the proportion SO2:H2O 1:1.5 are passed at 450 DEG  C. to an aircooled five-stage vanadium contact vessel and resulting gases are cooled to 45 DEG C. in a tower where some H2SO4 condenses.  The cooled acid mist is passed through a candle filter and acid up to 100 per cent. strength or oleum runs off the outside of the candles and is collected.  The filters should be kept moist and may be sprinkled with water, sulphuric acid, preferably of the same strength as that separated, p  or the acid separated by the filters.  Where the gas production is fluctuating, the filtering may be effected in two or more stages and variation in the amount of sprinkling of each or preferably the last stage makes up for the fluctuation.  The acid recovered from the various stages may be separately recovered.
Patent GB-789472-A (GB)
Title: Improvements in and relating to lead screws
IPC: F16H25/20
Filed: 1955-07-26
Abstract: 789,472. Screw and nut mechanism. AMERICAN METAL PRODUCTS CO. July 26,1955 [Jan. 13, 1955], No. 21554/55. Class 80 (3). In a screw and nut mechanism for effecting a translational movement of a member by the nut on rotation of the screw, the nut is coupled to, and normally prevented from rotating by, the driven member but is adapted to be released to rotate freely when the load exceeds a predetermined amount. The nut 14 is rotatably mounted by ball bearings 19 in a housing 15 which is coupled to the member to be driven (not shown) engaging in oppositely disposed apertures 22 of the housing. In Fig. 4 the nut is prevented from rotating by a spring-loaded ball or roller 25 engaging in an axial slot 23 in its periphery. When an excessive load is encountered, as by the nut engaging limiting pins 37 on the screw 11, the ball 25 is forced out of the slot 23 to allow the nut to rotate with the screw. In Fig. 3 the ball 25 is adapted to be held in engagement with the slot 23 by means of a solenoid 28 on energization thereof and is forced out on excessive load against the electromagnetic force. A spring catch 55 may be provided to retain the ball 25 and armature 27 after being forced downwardly but which is released on de-energization of the solenoid. This arrangement allows one of a plurality of nuts on a single screw to be brought into operation selectively as desired. These nuts may be used for actuating a vehicle body seat backwards or forwards or up and down.
Patent GB-1047534-A (GB)
Title: Improvements in or relating to digital counting equipments
Inventor: HUNT ROBERT WILLIAM
IPC: H03K21/00
Filed: 1964-05-25
Abstract: 1,047,534. Electronic counters. STANDARD TELEPHONES & CABLES Ltd. May 21, 1965 [May 25, 1964], No. 21564/64. Heading G4A. The frequency of a pulse source is measured by counting the number of pulses from the source 26 until it has exceeded the capacity of a chain 28, the subsequent attainment of a point B, C or D in a timing chain 21 controlling the position of the decimal point 31 in a display 30. Initially bi-stable 23 is at 1 and all other bistables at 0. A Mc. standard frequency source 22 feeds timing chain 21. After 100 Ásecs. a pulse at A reverses count control bi-stable 20 so that the source 26 feeds its pulses to chain 28. After a further 99 periods of 100 Ásecs. B pulses transient OR gate 36 and if a pulse has passed to stage E in chain 28 then count rate sensing bi-stable 23 restores so cutting off NAND gate 25 so that the count at 28 is stopped. The count is displayed on neon tubes at 30 or may be printed. Bi-stable 20 at the end of a count controls mono-stables M to cut off the supply from the standard frequency source 20 for several seconds while the display is viewed and then to restore the circuit to original condition. If a pulse has not entered stage E when the timing chain reaches B then the process continues until a further point C or D is reached with adjustment of the decimal point position 31. If the timing chain reaches D then bi-stable 23 is reversed irrespective of whether a pulse has entered E or not. If the frequency to be measured is excessively high then stage 39 operates to energize an alarm W.
Patent GB-1023407-A (GB)
Title: Improvements in and relating to chlorinated or brominated polymers
IPC: C08F236/04
Filed: 1964-05-26
Abstract: A chlorinated or brominated polymer is obtained by reacting a terpolymer of ethylene, a higher alpha-olefin and a non-conjugated diene with molecular halogen or an organic halogen-containing compound whereby a product containing at least 1% of chlorine or bromine is obtained.  The preferred terpolymers are derived from propylene and 1,4-hexadiene or dicyclopentadiene, and the halogen-containing compound may be N-chloro or -bromo succinimide or acetamide, or bromo-, dibromo- or dichloro-dimethylhydantoin. The halogenated polymers may be vulcanized with/without natural or synthetic rubber using sulphur or phenol dialcohol curing agents. Applications specified are tyres, belts, hose and adhesives.
Patent GB-500226-A (GB)
Title: Improvements in or relating to means for mounting photographs and to albums for photographs
IPC: B42F5/00
Filed: 1937-08-06
Abstract: 500,226. Albums. WYCHERLEY, S. R., and DUFAY-CHROMEX, Ltd. Aug. 6, 1937, No. 21720. [Class 11] An album for transparencies comprises a series of cut-out mounts, or a series of holders, such as pockets or clips, for the mounts or the transparencies, the mounts or the holders being hinged together in book form, together with a sheet having a highly reflecting surface, which is hinged so that it can be brought at willbetween any two mounts. The transparency to be observed is tilted up, so'as to lie between the eye of the observer and the reflecting surface. The sheet 14 bearing the reflecting surface is hinged to the outer edge of the cover 12 of the album containing the cut-out mounts 13. The reflecting surface, which is preferably lightdiffusing, may consist of mat silver paper, metal paint, &c., and may be tinted. The Provisional Specification describes also an arrangement in which sheets bearing reflecting surfaces are interleaved between the mounts.
Patent GB-1187293-A (GB)
Title: Vacuum Fluorescent Readout Device
IPC: G09G1/22
Filed: 1967-05-10
Abstract: 1,187,293. Discharge tube logic circuits. WAGNER ELECTRIC CORP. 10 May, 1967, No. 21739/67. Heading H3P. [Also in Divisions G1 and H1] An " AND " circuit component comprises a vacuum fluorescent readout device 20 (Division H1) and photo-sensitive device such as a photoelectric cell 42 in combination with a cathode follower type amplifier circuit. In normal operation, both control electrodes 24A and 24B are at positive potential and light emits from anode 23, negative potential inputs to both control electrodes being required to terminate conduction in the photo-cell.
Patent GB-224980-A (GB)
Title: Improvements in electric circuit breakers
IPC: H01H73/42
Filed: 1923-08-29
Abstract: 224,980. English Electric Co., Ltd., and Morris, F. Aug. 29, 1923. Automatic circuit-breakers ; switches actuating. - In a breaker adapted either for rapid or slow operation and comprising three members pivotally connected together and forming between them a compound toggle, acting as a principal toggle when two adjacent members are held rigid by a catch device and permitting the two members to act as a secondary toggle when the catch is out of action, the catch is carried by the two members, only one of which moves during the rapid action of the breaker. The movable contact 2 is carried on a lever 3 pivoted at 4 to a lever 6, which is in turn pivoted to the framework at 8 and has an extension 38 engaged by a biassing spring 40. The compound toggle comprises link 10, pivoted at 11 to lever 6, link 13, and lever 14 pivoted to the frame at 15. The elements 13, 14 may be latched to form a principal, toggle or single element by means of a light projection 20 on the former engaged by a relatively heavy latch 17 pivoted at 18 to the latter and controlled by a spring 19, and, with the parts 13, 14 so latched together, the breaker could be operated' as a slow action switch by rotating the lever 14 manually or otherwise to collapse the principal toggle. A quick break is imparted by tripping the latch 17 so that, lever 14 remaining stationary against stop 22, the spring 40 breaks the toggle 14, 13 and moves the lever 6 against stop 39. To re-close. the lever 14 is first moved clockwise until the latch 17 engages projection 20 and the lever 14 is then moved back to reset the principal toggle consisting (of link 10 and link 13 and lever 14 together. A. single operating lever 23, pivoted at 15, can operate the breaker with a quick break by means of a U-shaped slot 24, the left-hand limb of which engages the tail 26 of the latch 17 to open the switch. Further movement of this limb reengages the latch 17 and reverse movement of the lever causes the right-hand limb thereof to engage the lever 14 to re-set the 'breaker. Electromagnetic means for tripping comprises a lever 33, pivoted at 15, and carrying a boss 34 which engages the tail 26 of the catch 17. This lever is operated from a rod 32 connected to a bell-crank lever 29 which carries an armature 28 co-operating with a pole-piece 27. A setting screw 36 and scats 31 are provided for varying the tension of the control spring 35. It will be seen two modes of opening are possible, one by moving the membe.r 14 by hand when a slow motion is suitable, the other being a rapid action by tripping means.
Patent GB-250098-A (GB)
Title: Improvements in signalling devices for vehicles
IPC: B60Q1/36
Filed: 1925-09-02
Abstract: 250,098. Madsen, J. L. T. Sept. 2, 1925. E le c t romagnetic indicators.-In a signalling device in which a semaphore arm 8 is swung outwardly by means of an electromagnet 3, a lamp 13 being illuminated simultaneously, an armature 20, which under the action of a spring 21 presses the arm against a stop 22, is attracted by the core 5 to allow the arm to swing to its operative position. The circuit of the lamp 13 is completed by a pin 15 on the arm operating rod 6 pressing a spring contact 12 against a metal plate 14. The signal is operated by a switch 1, and an electric horn may be included in the circuit.
Patent GB-811471-A (GB)
Title: Electrical-signal transmitter and receiver system for communication between vehicles
IPC: B61L15/00
Filed: 1956-07-16
Abstract: 811,471. Inductive signalling. LOPEZ, A. C. July 16, 1956 [July 15, 1955], No. 21911/56. Drawings to Specification. Class 40 (5). For signalling between two bodies insulated from earth and having conducting frameworks the transmitter comprises an A.C. generator producing a frequency in the band 1 to 18 kc/s. is connected between the framework of one body and a metallic plate. The receiver on the other body comprises an amplifier connected between its framework and a similar metallic plate and feeding a signal indicator.
Patent GB-143453-A (GB)
Title: Improvements in steel sheet piling
IPC: E02D5/04
Filed: 1919-09-06
Abstract: 143,453. Berge, H. G. Sept. 6, 1919. Piling.-In steel sheet piling of Z-section, the web 1 is arranged at an angle of less than 90 degrees with the front and back of flanges 2, 3, and the piles are connected together to form trapezium-shaped spaces 4 for concrete &c.
Patent GB-265479-A (GB)
IPC: A61H35/00
Filed: 1926-09-07
Abstract: 265,479. Havard, E. Feb. 10, 1920, [Convention date]. Irrigators and like appliances.-An appliance for reducing, or preventing the formation of, wrinkles on the lower part of the face comprises a, U-shaped shield or channel member 1 adapted to cover the chin and portions of the sides of the face and having a small perforated liquid receptacle 2 positioned in its interior at the rear end of the base 1<a> adapted to be connected with a source of liquid supply under pressure by a flexible pipe 5, the liquid draining away through a discharge opening 9. An outwardly inclined spout 10 adjacent the discharge opening directs the liquid away from the user. The channel member 1 is provided with a raised portion or lip and is so shaped as to prevent liquid from flowing over its borders.
Patent GB-271309-A (GB)
Title: Improvements in stapling devices
IPC: B25C5/02
Filed: 1926-09-08
Abstract: 271,309. Vogel, M. Sept. 8, 1926. Stapling, hand tools for. - In a bench-type stapling device the staple holding and feeding devices are 'enclosed in a housing 1 open only at its underside and closed at the front bv a plate 2. Staples 5 are carried by a bar 3 and fed forward by a pusher 24 under the action of a spring 26 surrounding a rod 19. The latter has a curved handle portion 22 and is removably held on the bar 3 by a tail piece 23. The bar 3 and housing are removably pivoted to a clinching base B bv means of a flat pin 32<b> and a circular opening 30<b> and slot 31<b>. A punch 7 carrying a driver 9 is normally held in raised position by a. blade spring 27. Pivoted to the plate 2 is a triangular locking member 14, one arm 16 of which normally retains the end staple on the bar 3, the other arm 15 being adapted to enter a slot. in the driver 9 and prevent the latter from rising until the end staple has been completelv ejected from the delivery channel. The bar is held at a distance from the base B bv a leaf spring 36. The base is formed with side grooves 35 in which slidably engage arms 40, Fig. 1, of a wire member 39, which has a central bent portion to act as a stop for positioning papers, &c., to be stapled. Where papers must be inserted a very long way to the device, the base may be extended and the housing pivoted to a rod mounted on the base. The pin 32<b> may be carried either bv the bar 3 or the base, and the latter may be solid or formed of sheet metal pressed to the required shape.
Patent GB-488140-A (GB)
Title: Improvements in and relating to water-jet apparatus
IPC: F21S8/00
Filed: 1937-08-13
Abstract: 488,140. Water - jet apparatus. FORGES & ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE JEUMONT. Aug. 13, 1937, No. 22306. Convention date, Sept. 29, 1936. [Class 69 (i)] In water-jet apparatus such as a fountain, comprising a jet nozzle 3 supported at the surface of a river &c. by a float 1 which is sunk to the bottom when the jet is not in use, the submer. sion and emersion are rendered automatic by the action of an ejector 6 fed from the watersupply pipe 4. When the apparatus is in use, the ejector prevents the entry of water into the float, but when the jet is turned off the ejector action ceases, and water enters the float through the ejector tube until it reaches the lower end of a tube 2, when the float sinks and the water rises further in it to the level B, compressing the entrapped air. When the jet is again started the ejector empties the water from the float faster than water can enter through the tube 2, and the float finally rises to the surface. The float may be maintained at the surface when the jet is stopped by closing a cock 7 on the tube 2, which prevents the escape of air and consequently the entry of water. In a modification, the jet nozzle itself is used for the ejector. In a further modification, a floatoperated three-way cock supplies, when the float is submerged, a supplementary ejector which rapidly empties the water. When the apparatus has risen the cock is operated by its float to cut off the supplementary ejector and supply the jet.
Patent GB-1285239-A (GB)
Title: Liquid level control
Inventor: REIGHARD ALAN B
IPC: G01F23/00
Filed: 1970-05-08
Abstract: 1285239 Automatic liquid level control NORDSON CORP 8 May 1970 [8 May 1969] 22357/70 Heading G3R [Also in Division H1] Variations of liquid level are detected and corrected by movements of a partially immersed body having a density such that in a free condition it would sink in the liquid but which is attached to a lever balanced by a counterweight immersed only in ambient air. In Fig. 2, the level of adhesive in a reservoir associated with an applicator wheel is detected by a body 21, e.g. of coated aluminium, partially immersed in the adhesive and heavier than the quantity it displaces. Body 21 is attached to the end of a lever 20 pivoted at 16 and counter-balanced by an adjustable weight 26. Fall in the level of adhesive from a desired value causes lever 20 to move a magnet 32 relative to a dipped-in magnetically-operated mercury switch 40 so that an electro-pneumatically operated valve (not shown) is opened to supply further adhesive to the reservoir until the desired level is restored. Clockwise movement of the lever is limited by a stop 33.
Patent GB-632258-A (GB)
Title: Improvements relating to looms for weaving
IPC: D03D51/34
Filed: 1947-08-12
Abstract: 632,258. Shuttles weft feelers. SHIMWELL, D. W., McGREGOR & BALFOUR, Ltd., and SPARROW, E. M. Aug. 12, 1947, No. 22362. [Class 142 (iii)] A shuttle using solid cops (which shorten as they are consumed) has a feeler c which, when the cop is nearly exhausted, allows a plunger e to protrude through the front of the shuttle or, as shown, into a slot b, so that as the shuttle is boxed the plunger rocks a striker j to stop the loom or to initiate automatic cop changing as described in Specification 632,245.
Patent GB-874124-A (GB)
Title: Improvements in or relating to type printing apparatus
IPC: B41J3/54
Filed: 1958-07-12
Abstract: 874,124. Selective printing. HANDLEY, J. July 10, 1959 [July 12, 1958], No. 22416/58. Class 100(4) Type printing apparatus comprises at least two printing heads 25, 26 each of which is controlled by its own tape reading heads 9, 19 and 8, 20. As shown the printing heads 25, 26 are of the type described in Specification 798,093 and are mounted on a carriage 27 at a half line distance apart and each effect typing on one half of a page. The carriage travels on rollers 28 between rails 29, 30 and is moved in letter-space increments in one direction and rapidly in a return direction by an arm 33 controlled by a cam 31. In synchronism with this movement is the feeding of a perforated or magnetic record tape 6 by feed rollers 4, 5. The tape 6 is lead below a roller 12 on a rocker 16, past the reading heads and under a further roller 15 on the other end of the rocker 16 so that, when a roller 17 on the rocker engages the appropriate portion of a driving cam 10, the tape 6 is fed rapidly a distance equivalent to a line-length of typing so that the reading heads are ready to sense a new line. At the time of this rapid feed the reading heads are rendered ineffective. Specifications 849,430 and 855,823 also are referred to.