baber/WOPTO huggingface dataset:
Patent GB-943245-A (GB)
Title: Control system for electric motors
IPC: H02P7/03
Filed: 1960-12-21
Abstract: 943,245. Control of motors. ZAVODY V. I. LENINA PLZEN NARODNI PODNIK. Dec. 21, 1960 [Dec. 24, 1959], No. 44008/60. Heading H2J. A reversible servomotor 5 is supplied from amplifiers 1, 2, both controlled by a signal developed across resistor 4. The output of amplifier 1 is coupled with the input of amplifier 2 through a feed-back unit 3 so that the amplifier 2 is inoperative when the amplifier 1 is operative. The arrangement is stated to reduce the range of signal voltage over which the motor does not respond to a change of voltage.
Patent GB-1367915-A (GB)
Title: Hydro-pneumatic pressure accumulator
IPC: F15B1/14
Filed: 1971-09-22
Abstract: 1367915 Hydraulic accumulators V LANGEN [trading as LANGEN & CO] 22 Sept 1971 [3 Oct 1970] 44182/71 Heading F1D An hydro-pneumatic accumulator has upper and lower housing parts 1, 2 secured together by electronic beam welding, the weld being separated from the interior 4 by a cylindrical wall portion 14 of a member 15 for attaching the diaphragm 3 to the housing interior. In an alternative embodiment Fig. 2 (not shown) the co-operating edges of the housing parts have interlocking flanges, the inner one of which serves the same function as the cylindrical wall portion 14 whilst a separate member is used to attach the diaphragm to the inside of the housing.
Patent GB-1204229-A (GB)
Title: Improvements in rotary pulse generators
Inventor: GERVAIS JEAN
IPC: H01H19/635
Filed: 1968-09-18
Abstract: 1,204,229. Momentary-contact switches. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI. 18 Sept., 1968 [19 Sept., 1967; 25 July, 1968], No. 44277/68. Heading H1N. A rotary pulse generator includes a driven rotating shaft 4 or 23, a member 2 or 24 operatively connected thereto and movable relative to a sensing member 1 or 30, and a pair of separate guide paths along which the relative movement takes place, one part of each guide path being substantially parallel to the axis of rotation of the shaft and relative movement along this part causing movement of the sensing member to generate a pulse. The guide paths comprise helices 18, 19, parts 16, 17, parallel to the axis of the shaft 4, cut into the cylindrical surface of a cam 2. A dog 20 slides in the guide path 18 or 19 and causes movement of the cam 2 to left or right, depending on the direction of rotation of shaft 4, compressing spring 12 or 8 until the dog 20 is aligned with part 16 or 17, when the cam 2 moves back to its equilibrium position, Fig. 1, and one of two bosses 15 thereon actuates the sensing member 1, which comprises a movable contact, during this part of the movement. Alternatively, the guide paths are constituted by a flat support 22, a slot 29, parallel to the axis of shaft 23, and spring biased rods 33, 34, whose ends rest on support 22. Shaft 23 rotates the arm 24, biased towards support 22 by a spring 26, such that it mounts rod 34, moves along the top of a member 28, drops into slot 29, thereby actuating a snapaction switch 31 momentarily via member 30, passes under a right-hand member 28, lifts rod 33 and continues round until it mounts rod 34 again, and so on. The pulse generated by momentary actuation of switch 31 causes stopping of the motor rotating the shaft 23. Reverse rotation of shaft 23 provides a similar actuation sequence, but with arm 24 mounting rod 33 and lifting the rod 34, thereby providing the two guide paths, one for each direction of rotation. The pulse generator is applicable as a limit switch generally and for stopping the advance of the movable arms of an on-load transformer tap-changer. It may also be used as a revolution counter for a sprocket wheel. The embodiment of Figs. 1, 2, may utilize guide paths of gradual forms other than helical slots, and the cam 2 may be provided with a dog movable in a guide path situated in a sleeve secured to the movable contact 1.
Patent GB-1207770-A (GB)
Title: A device for manipulating a pig, or scraper, moved through a pipeline by a propelling fluid under pressure
Inventor: HINZ HANS
IPC: F16L55/46
Filed: 1969-09-08
Abstract: 1,207,770. Pipe-line pig trap. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 8 Sept., 1969 [9 Sept., 1968], No. 44283/69. Heading F2N. A pig trap comprises a housing 1 connected by a flange 2 to a pipe-line and having a branch 6 connected to a tank, a by-pass 10 from the housing bottom to the branch, and a sleeve 7 for catching the pig slidably arranged within the housing 1 such that the sleeve in its rest position leaves the passage between the pipe-line and the branch 6 open by way of registering ports 9, 4, and when moved to its opposite position, shuts off this passage. Wall friction between the incoming pig and the sleeve 7 moves the sleeve against a spring 8, the remaining liquid in the pipe has been removed via the by-pass 10 to the branch 6. When the compressed fluid (which may be liquid or gas) propelling the pig is turned off the sleeve 7 returns to its rest position. The pig is dispatched in the opposite direction by pumping compressed fluid through a line 11 (a valve 12 closing the by-pass 10) to move the piston 15, connected to the sleeve 7, downwards to close the passage 4, 9. In a further embodiment, the sleeve 27 consists of two parts 28, 29 urged apart by a spring 30 to provide a passage between the pipe-line and the branch. When the incoming pig moves part 28 by wall friction to abut the part 29, the passage is closed and part 28 is retained against part 29 by the action of the compressed fluid on its upper surface. In a modification of this embodiment to allow for interruption of the operation sequence, with the pig positioned between the traps, part 29 is connected to a piston to which compressed fluid is supplied to close part 29 to part 28 to permit build up of pressure to propel the pig. Alternatively, the sleeve 29 may be closed at its lower end and have a throttled connection therethrough for the propelling fluid expelling the pig, and a passage with a check valve permitting escape of liquid to the by-pass from in front of an incoming pig.
Patent GB-1243382-A (GB)
Title: Structural steel having martensite structure
IPC: C22C38/00
Filed: 1968-09-18
Abstract: 1,243,382. Alloy steels. NIPPON STEEL CORP. Sept. 18, 1968 [Sept. 18, 1967], No.44380/68. Heading C7A. A wholly martensitic alloy steel consists, in per cent by weight, of The steel may be austenitized or hot-rolled and cooled down to room temperature to produce a martensite structure. It may be aged at below 600‹C.
Patent GB-1329358-A (GB)
Title: Electrical resistors and their production
IPC: H01B1/00
Filed: 1971-09-23
Abstract: 1329358 Glass incorporating conductive materials AIRCO Inc 23 Sept 1971 [19 Oct 1970] 44413/71 Heading C1M [Also in Division H1] A resistor material comprises lead ruthenate dispersed in matrix of glass or refractory ceramic material. The lead ruthenate is prepared from the sintering reaction of RuO 2  with PbO, PbO 2 , PbCO 3  or Pb(NO 3 ) 2 ; with the use of PbO, extra amounts of PbO may be added to yield a mixture of Pb 2 Ru 2 O 6  and PbO. The glass frit may be a Pb-Al borosilicate or a Pb-Zn- Zr-Mn borosilicate; the first having a composition in wt. per cent of PbO, 60; B 2 O 3 , 30; SiO 2 , 4; N 2 O 3 , 6. For screen printing, the composition is made into a paste by adding for example benzol, pine oil, α or # terpineol, polyvinyl alcohol or ethyl cellulose in butyl carbitol. The lead ruthenate may be formed in situ as part of the firing of the finished glaze film. In described examples a paste is printed on sintered alumina substrates which have been preterminated with a silver conductor film. V 2 O 3 , Sb 2 O 5 , MnO 2  or Fe 3 O 4  may be added to the composition to modify the temperature coefficient of resistance. Volumetric resistors are formed with lead ruthenate mixed with a refractory ceramic material such as particulate Al 2 O 3  or ZrO 2 .
Patent GB-1169532-A (GB)
Title: Improvements in or relating to Leather Drying Machines
Inventor: ARCHER RICHARD JOHN
IPC: F26B5/04
Filed: 1965-10-21
Abstract: 1,169,532. Leather-drying machines. E. W. HUDSON Ltd. 20 Oct., 1966 [21 Oct., 1965], No. 44649/65. Heading F4G. [Also in Division C6] A machine for drying leather, Figs. 1 and 3, comprises an assembly 1 of stacked platen structures 4, 5, 6, 7 and 8 provided with metal, e.g. steel, particularly mild steel, substantially horizontal drying plates 10, 11, 12, 13 and 14, on whose upper surfaces sheets of wet leather are placed, e.g. slicked. Each drying plate rests on and covers the open top of a substantially rectangular, rigid frame 15, in which a substantially horizontal metal sheet 17 is bolted to form a chamber 16a, into which a heated fluid, such as steam, is fed, through a pipe 29, to heat the associated drying plate and thus dry the leather thereon. The heating fluid leaves each chamber 16a through a pipe 31. The lowermost platen structure 4 comprises only a drying plate 10 a frame 15 having a metal sheet 17 forming a heating chamber 16a. The drying plate of the uppermost platen structure 8 may be covered by a suction hood 9 comprising a frame 15. The hood 9 and each of the platen structures 5, 6, 7, 8 are provided with a substantially horizontal wall or partition comprising an upper rubber sheet 18 and a threeply lower sheet of gauze 20, which divides each of the platens structures 5, 6, 7, 8 into a middle compartment 16b and a lower, open-bottomed compartment 16c constituting a suction hood for the drying plate of a platen structure located immediately thereunder. Air and watervapour are exhausted from the suction hoods through pipes 30. Each drying plate may also rest on the bars (24), Fig. 2 (not shown), of a grille comprising cross-tubes 23 supported on the associated metal sheet 17. The bars (24) are pierced by holes 25. A smaller drying machine according to the invention has only a platen structure 4 and a hood 9 in its assembly or stack 1. The drying machine is associated with the skin-handling and transfer arrangements 2, as described in Specification 1,169,534 and the heating arrangements and control gear 3, as described in Specification 1,169,533.
Patent GB-1017593-A (GB)
Title: Electrostatic printing, reproducing or copying process
IPC: G03G13/22
Filed: 1961-12-13
Abstract: 1,017,593. Printing processes. L. F. W. LAWES, and N. G. SHREEVE. March 11, 1963 [Dec. 13, 1961], No. 44681/61. Heading B6C. [Also in Division G2] An electrostatic printing, reproducing or copying process comprises applying a high voltage charge to a surface of a layer of material of high dielectric strength and of sufficiently high resistivity to prevent migration of the charge, applying a conductivity pattern formed by a printed or embossed sheet of paper or other material, a specially formed template, a coin or a dial face, against said charged surface to effect differential discharge and form an electrostatic image, and developing said image. Alternatively the conductivity pattern may be applied against the surface before the high voltage charge so that it subsequently controls the distribution of the charge to form the electrostatic image. The layer may be of silicone resin, polythene terephthalate, polystyrene, polythene, polypropylene, polytetrafluoroethylene, polytetrachloroethylene or polycarbonate. In one embodiment a rotatable drum is provided with a layer of one of the said materials and a backing of conductive material. At a charging station a fine wire parallel to the drum axis and spaced from the surface thereof is connected to an electrical supply and gives a corona discharge which imposes an electrostatic charge on the surface of the layer. At a conductivity patternapplying station a belt or roller presses a printed sheet to be copied against the drum surface and the charge leaks from those areas where the paper contacts the layer, leaving an electrostatic image. Powder is applied to the image by blowing, dusting or brushing or from a liquid suspension at a developing station. At the next station a sheet of paper &c. is fed between the drum and a pressure member such as a roller and a charging head applies an appropriate charge to the paper to effect transfer of the image. The image is subsequently fixed by heat &c. and the charge and any excess powder are removed from the drum. The backing sheet of the layer is earthed and a corona discharge device is provided between the pattern applying station and the developing station to give the layer a small reverse charge to prevent background cluttering. The apparatus may be non- rotary with the layer in the form of a plate. It is stated that the conductivity pattern may be applied by the selective use of conductive and non-conductive dyes or inks on a sheet of conductive or non-conductive material.
Patent GB-1090628-A (GB)
Title: Improvements in or relating to a heat sink for the mounting of temperature-sensitive electrical components
IPC: H01L23/427
Filed: 1965-10-22
Abstract: 1,090,628. Mounting electrical equipment. INTERNATIONAL STANDARD ELECTRIC CORPORATION. Oct. 22, 1965 [Oct. 24, 1964], No. 44757/65. Heading H1R. [Also in Division F4] An angled mounting plate for temperaturesensitive electrical components comprises two channel systems 1 and 2 containing different evaporating and condensing refrigerants. A slot 5 is provided for minimizing thermal conduction between the systems. A further slot 8 minimizes thermal conduction to one of the channels of system 1 so that refrigerant condensing in the vertical limb of the plate can run down that channel without being impeded by rising vapour. Electrical components 6, e.g. electron tubes, power transistors and semiconductor rectifiers, are mounted on the plate which may also serve to conduct current. The plate may be formed of aluminium plated with silver and may be provided with integral or attached fins (Figs. 5 and 6, not shown). Further channel systems may be formed in the plate for connection to a source of cooling water. The refrigerants may comprise CFCl 3  and C 2 F 3 Cl 3 .
Patent GB-1099350-A (GB)
Title: Improvements in carburettors for internal combustion engines
IPC: F02M3/045
Filed: 1966-10-07
Abstract: 1,099,350. Spray carburetters. SOCIETE INDUSTRIELLE DE BREVETS ET D'ETUDES, S.I.B.E. Oct. 7, 1966 [Oct. 25, 1965], No. 45002/66. Heading F1B. Fuel supply is reduced or cut-off during overrunning conditions while the engine speed is above a limit which is determined by a device 20 which counts the number of times per second that the contact breaker 14 breaks the ignition circuit. In Fig. 1 a normally open valve 18 in the idling passage 7 is closed during over-running by an electromagnet 21 the circuit of which includes a switch 28 closed when the throttle valve is closed and a relay 26 closed by the device 20 when the engine speed is above the predetermined value. In a modification Fig. 4 (not shown) the throttle actuated switch 28 is replaced by a diaphragm operated switch (30a) closed by the high intake pipe suction when the throttle valve is closed. In a constant suction type carburetter, Fig. 5 (not shown), the electromagnet 21 opens a valve (22) during over-running to transmit the suction downstream of throttle valve (2) to the space above piston (40), reducing the suction above the nozzle (46) and thereby reducing or cutting off the fuel flow.
Patent GB-979736-A (GB)
Title: Improvements in or relating to thermo-electric devices
IPC: H01L35/06
Filed: 1962-11-28
Abstract: 979,736. Thermoelectric devices. SIEMENSSCHUCKERTWERKE A.G. Nov. 28, 1962 [Nov. 28, 1961], No. 45084/62. Heading H1K. A thermoelectric device comprises a thermoelectric limb and an electrical conductor which is pressed against the limb by a leaf-spring. In the " exploded " view, thermoelectric limbs 3, 4 of opposite conductivity types are mounted in a fluid-tight insulating wall 5 and are bridged in pairs by conductors 7 pressed against the limbs by leaf-springs 8 which may be covered with insulating layers. The areas of contact between limbs 3, 4 and conductors 7 are lapped and silver foils 6 are inserted. Base-plate 2 and coverplate 1, against which springs 8 press, are moved together to compress the springs and side walls (not shown) are attached. Pipes 9, 10, 11, 12 are included in the structure to provide water and brine circuits over the " hot " and " cold " junctions, respectively. In a modification the base and cover plate are provided with fins and a protective gas may be sealed inside the housing or may flow through pipes.
Patent GB-973115-A (GB)
Title: Improved method of, and apparatus for,preheating a vitrifiable batch
IPC: C03B5/12
Filed: 1961-12-15
Abstract: 973,115. Preheating furnace charges. GLAVERBEL. Dec. 15, 1961 [Dec. 16, 1960], No. 45121/61. Heading F4B. In the manufacture of glass in a shaft furnace 1, granular raw materials fed through a hopper 6 on to a perforated, vibratory plate 13 suspended on springs 15 are distributed over a preheater 9 comprising sheet metal elements 10 defining vertical channels 11. A modification, Fig. 3 (not shown), has partitions dividing the preheater into eight sectors, and another, Fig. 4 (not shown), has continguous, vertical metal tubes. The metal elements may be replaced by ceramic-metal, or ceramic elements and may consist of chains instead of sheet metal. Perforations in the plate 13 may be proportional to the rate of flow of hot gases through the channels.
Patent GB-1518028-A (GB)
Title: Insert device for application to the intersections of tennis racket strings
IPC: A63B51/10
Filed: 1976-11-02
Abstract: 1518028 Insert for tennis racket string cross-over points SELCOM-CAMSA SAS DI CARLO GIBELLO & C and FABRA SrL 2 Nov 1976 [4 Dec 1975 26 May 1976] 45543/76 Heading A6D [Also in Division E2] A device having perpendicular grooves 10, 12 for receiving crossing tennis racket strings, Figs. I and 2 (not shown), is formed with ribs 24, 26, 28 projecting into each groove to grip an associated racket string. The device may be of acetal or polyamide resin or of metal. As shown, each end of the device has surfaces 30, 32 which slope towards the associated groove and each groove narrows towards its bottom to distort the cross-section of the string, which cross-section is nevertheless wholly located within the groove. Preferred angular and lineal dimensions are specified.
Patent GB-1392475-A (GB)
Title: Hydrazino-pyrimido-pyridazine derivative
IPC: C07D211/74
Filed: 1972-05-05
Abstract: 1392475 Hydrazino-tetrahydropyrido-pyridazine derivative SANDOZ Ltd 5 May 1972 [11 May 1971 26 May 1971] 45722/74 Divided out of 1392474 Heading C2C Novel compound of Formula I i.e. 6 - benzoyl - 3 - hydrazino - 5,6,7,8 - tetrahydro - pyrido[4,3-c]pyridazine, is obtained by boiling a suspensionof 6-benzoyl-3-chloro 5,6,7,8- tetrahydropyrido[4,3-c]pyridazine in hydrazine hydrate at a reflux temperature of 110 C. for 1 hr. The free base may be converted into the acid addition salt forms and vice versa. A pharmaceutical composition having antihypertensive properties comprises a compound I in free base or acid addition salt form in association with a pharmaceutical carrier or diluent, unit unit dosage forms or in sustained release form.
Patent GB-1338806-A (GB)
Title: Launching device for rockets
IPC: F41A19/07
Filed: 1971-10-01
Abstract: 1338806 Rocket firing device; rocket apparatus; launching rockets COMET-APPARATEBAU GmbH 1 Oct 1971 [22 Dec 1970] 45811/71 Headings F3X F3A and F3C A launching device for rockets has a launching barrel 2, Fig. 1, a handle 3 attached at right angles to the barrel 2, a butt 4, and an E- shaped handle 5 which connects the butt 4 to the barrel 2. A rocket 9, Fig. 3, has a rear end 9a containing a charge 9b, has a bore 9c, and has a plate 10. The latter is attached to the end 9a by a seam 9d, is provided with jets lOa for the escape of burnt gases from the charge 9b, has a percussion cap 11 mounted therein, and has a 'cone lOb which, when the rocket is inserted into the barrel, engages a truncated cone 12a, Fig. 4, of a breech-plate 12, the latter being mounted in the end 2a of the barrel 2. The breech-plate 12 has a bore 126 which guides a firing pin 13, having a point 13b and a shoulder 13c. A member 14 is slidably mounted on the firing pin and has a cocking lever 17 fixed thereto, the cocking lever passing through a slot 2b formed in the barrel 2. The firing pin has a spring 15 mounted thereon which is located between the sliding member 14 and a spring washer 16 fixed to the firing pin, has an opening 13a which receives a trigger pin 18 having a recess 18a, Fig. 6 (not shown), engageable by a locking pin 20, and is urged by a spring 21, a member 22 being positioned between the firing pin 13 and the spring 21. In use the rocket is inserted into the barrel, the cocking lever 17, Fig. 4, is moved in the direction of the butt 4 and the firing pin 13 is retained in the cocked position by the trigger pin 18 which is urged into the opening 13a of the firing pin by a spring 19. Locking is effected by the pin 20. In order to launch the rocket the pin 20 is actuated, the trigger pin 18 is urged manually against the spring 19 and the firing pin 13 is urged towards the rocket by the spring 21. The point 13b strikes the percussion cap 11, Fig. 3, and the shoulder 13c, Fig. 4, of the firing pin then strikes the plate 10 and pushes the rocket along the barrel 2 prior to the charge 9b causing the rocket to be propelled out of the barrel. The spring 15 moves the firing pin rearwards so as to prevent it from protruding when the device in uncocked.
Patent GB-1435069-A (GB)
Title: Process for the preparation of ethylene dichloride and/or vinyl  chloride from ethane
IPC: C07C17/25
Filed: 1974-10-23
Abstract: 1435069 Ethylene dichloride and/or vinyl chloride ALLIED CHEMICAL CORP 23 Oct 1974 [23 Oct 1973 (2)] 45871/74 Heading C2C Ethylene dichloride and/or vinyl chloride are prepared by (a) reacting a gaseous mixture comprising ethane, Cl 2  and O 2  in proportions such that the molar ratio Cl 2  : C 2 H 6  is 0À2-1À2 : 1 and of O 2  : C 2 H 6  is 0À005-0À5 : 1 in an autothermic cracking zone bar 0À1-10 seconds at 700-1000‹ C. under autothermic conditions such that the reaction product contains ethylene and HCl; (b) cooling the product to below 600‹ C.; (c) passing the cooled product, together with at least the stoichiometric amount of O 2  required to produce ClCH 2 CH 2 Cl, to an oxyhydrochlorination zone and reacting under such conditions that the ethylene, HCl and O 2  are converted to a product containing ClCH 2 CH 2 Cl and optionally; (d) passing at least some of the product of step (c) to a cracking zone and reacting under such conditions that ClCH 2 CH 2 Cl is converted to vinyl chloride. The reactants in the autothermic cracking zone are preferably maintained at 850-950‹ C. for 0À25 to 2À5 seconds. The molar ratio of Cl 2 : C 2 H 6  may be 0À4-0À6 : 1 when vinyl chloride is desired, 0À6-0À9 : 1 when ethylene dichloride and vinyl chloride are desired or 0À9-1À2 : 1 for ethylene dichloride. The HCl formed in stage (d) may be recycled to the oxyhydrochlorination stage (c) and HCl formed in the cracking of ethylene dichloride may also be recycled.
Patent GB-1498202-A (GB)
Title: Production of electrical layer capacitors
IPC: H01G13/00
Filed: 1975-11-06
Abstract: 1498202 Sawing SIEMENS AG 6 Nov 1975 45987/75 Heading B5L [Also in Division H1] In a method of manufacturing capacitors having a plastics foil dielectric wherein a parent capacitor is divided by sawing into individual smaller capacitors. The saw blade is coated in the cutting area with an insulating lubricant prior to or during the sawing step. The parent capacitor may comprise an annular winding of strips of stretched heat-shrinkable plastics material coated with valve metal, heat generated on sawing causing local shrinking of the plastics material and the formation of mutually insulated islands of the metal layer. The lubricant may be oil, grease or wax. As shown blocks 2, 3 of wax are pressed against saw blade 1 preferably between each two successive sawing processes.