baber/WOPTO huggingface dataset:
Patent GB-806903-A (GB)
Title: Improvements in or relating to the manufacture of organic isocyanates
Inventor: KANTYKA TADEUSZ ANTONI
Filed: 1956-08-02
Abstract: Organic polyisocyanates are prepared by reacting a primary polyamine with phosgene in a liquid medium containing between 2 and 8 mols. of COCl2 per 1/x moles of polyamine, where x is the number of primary amine groups in the molecule, at a temperature not exceeding 60 DEG C.; and then heating the resultant polycarbamyl chloride in order to convert it into the polyisocyanate.  It is preferred to use a liquid medium which boils at a temperature not exceeding 50 DEG  C. at the pressure employed, and to remove the heat of reaction by allowing the reaction mixture to boil.  In addition to phosgene, the liquid medium may contain an inert organic liquid such as o-dichlorobenzene, monochlorobenzene, chlorotoluene, xylene, toluene, or chloronaphthalene.  Poly-isocyanates may be prepared by the process from hexamethylene diamine, p-phenylene diamine, toluylene diamines, diaminodiphenylmethane, triamino-triphenylmethane, benzidine, 1 : 5-diaminonaphthalene, and diamino - dicyclohexylmethane.  In Example 1, a solution of 91.5 parts (by weight) of toluylene diamine in 1700 parts of o-dichlorobenzene at about 40 DEG  C. is added during approximately 30 minutes to 495 parts of liquid phosgene contained in a reaction vessel equipped with a reflux condenser cooled by brine at -5 DEG  C. During the addition of the solution, the temperature of the reaction-mixture rises from about 8 DEG  C. to about 35 DEG  C.; and phosgene boils off and refluxes.  The brine in the condenser is then replaced by cold water, and the reaction-mixture is heated to 160 DEG  C. and maintained at this temperature while gaseous phosgene is passed through the mixture for 20 minutes.  The remaining traces of phosgene and hydrogen chloride are then removed by passing a stream of nitrogen through the mixture, and it is distilled to recover toluylene diisocyanate.  In Example 5, a solution of 148.5 parts of 4 : 41-diaminodiphenylmethane in 840 parts of o-dichlorobenzene is introduced during a period of 30 minutes into a vessel equipped with an agitator and reflux condenser, and at the same time liquid phosgene is fed into the vessel at such a rate that the reactiontemperature is maintained at 25 DEG  C.  The amount of phosgene added in this way is 620 parts. The reaction-mixture is then heated to 60 DEG  C., and gaseous phosgene is passed through the mixture whilst the temperature is raised to 150 DEG  C.  The product is a solution of 4 : 41-diisocyanatodiphenylmethane in dichlorobenzene.
Patent GB-922386-A (GB)
Title: Combination piston-turbine internal combustion engine
IPC: F02B41/10
Filed: 1961-07-03
Abstract: 922,386. Gas turbine plant. A. P. PEDRICK. July 3, 1961, No. 23872/61. Class 110 (3). [Also in Group XXXI] Combustible mixture, compressed between radially moving pistons P and a relatively moving, smooth part of a rotor E, is ignited and the products of combustion passed through reaction passages O in the rotor E to sustain the rotor rotation. The combustible mixture, formed by fuel sprayed by a nozzle A into an air stream B, enters the stationary radial cylinders through ports in the wall J and passages F in the rotor E. The pistons are moved outwardly on the suction stroke by cam faces on the walls J, contacted by followers R carried by the pistons, and inwardly by springs M on the compression stroke, the compressed charge in the combustion recesses L being ignited by ignition means carried by the rotor E. The burnt mixture passes from the rotor E through a turbine wheel V, rotating oppo itely to rotor E, the rotor Q of which is coupled to a transmission, e.g. the driving wheels of a rotor vehicle or an aircraft propeller. The pistons P are provided with spring-loaded seating means c. Specifications 19846/14, 142,959, 201,101, 264,056 and 548,699 are referred to.
Patent GB-875082-A (GB)
Title: Improvements in or relating to conveyor installations
Inventor: ORWIN OLAF JOHN BARCLAY
IPC: B61B10/02
Filed: 1958-07-25
Abstract: 875,082. Overhead conveyers. FISHER & LUDLOW Ltd. July 13, 1959 [July 25, 1958], No. 23937/58. Addition to 819,343. Class 104(2). In an improvement of the conveyer installation of the parent Specification each carrier drive disengaging element 26 together with its associated actuating element 17 and interconnecting bar 14 is mounted on the driving element track 10. In the arrangement shown the bars 14 are supported in bearing blocks 13 mounted on a horizontal flange 12 of the upper track 10. The bearing blocks 13 are secured to the flanges 12 by bolts which space apart the opposed ends of aligned bars 14. The leading load carrier 20 on making contact with an operative part 21 of the actuating element 17 causes the element 17 to tilt and in so doing moves a cam-piece 28, provided on the carrier drive disengaging element 26, into the path of a cam follower roller 29 to displace a driving dog 30 out of contact with a carrier drive abutment bar 35 to stop a following carrier 20. The operative part 21 of the actuating element 17, Fig. 2 (not shown), is provided with a wedge-shaped abutment which engages a similar abutment provided on the side of each carrier 20 to prevent return movement of the engaged carrier 20. An L-shaped member 31 mounted on the lower end of the carrier drive disengaging element 26, Fig. 3, is provided with a horizontally projecting limb 33 which engages the carrier drive abutment bar 35 to stop the associated carrier 20. The face 34 of the limb 33 is inclined to the forward face of the abutment bar 35 so that normally the free end of the limb 33 only engages the abutment bar 35. Should the bar 35 contact the limb 33 with an abnormal force, a pin connecting the member 31 to the element 26 is sheared and the member is rotated about the axis of the element 26 to engage the abutment member 35 over the whole of the face 34 of the limb 33. Specification 875,083 also is referred to.
Patent GB-446063-A (GB)
Title: Improvements in or relating to the production of hard metal alloys
IPC: B22F7/06
Filed: 1935-08-27
Abstract: 446,063. Alloys ; obtaining coherent masses from powdered metals &c. KRATKY, A., 10, Kanzlerplatz, Vienna. Aug. 27, 1935, No. 23963. [Class 82 (i)] In a method of making bodies of hard alloys of the type comprising refractory carbides or nitrides with or without other materials such as lower melting-point metals, silicon carbide, boron, diamond, &c., the body is built up on a base from superposed separate thin layers of finely powdered material, each layer being highly heated and compressed and caused to become welded with the support or the preceding layers. The deposit and pressing of the successive layers is carried out in a reducing atmosphere or a vacuum, or alternately in one after the other, the pressure being applied by rollers or by a sliding block. In some cases some of the constituents mav be present in the mixture as compounds which are reduced to metal during the process. In the apparatus shown, the powdered mixture is supplied from a sieve w through a funnel i to the inner surface of an electrically heated rotary ring a of metal, carbon, or like material, and is subjected to pressure by a roller m. When a sufficient thickness of coating has been built up, the ring a and its coating k are broken up into segments which may, for example, be secured to a cutting tool ; or the coating may be detached from the base, in which case the base is preferably provided before use with a coating as of nickel.
Patent GB-971275-A (GB)
Title: Improvements in or relating to electrolyte regeneration methods
IPC: C25D21/22
Filed: 1962-06-21
Abstract: In the process of anodizing aluminium using as electrolyte a solution containing sulphosalicylic acid and a metal sulphate or sulphuric acid as described in the parent Specification, the electrolyte, containing dissolved aluminium, is regenerated by passing it through a bed of cationic resin, preferably a sulphonated copolymer of styrene cross-linked with divinyl benzene in the form of beads. Aluminium is taken up by the resin, regenerating sulphosalicylic acid, which is removed for further use by passing water first downwardly and then upwardly through the bed.  The bed is then freed from aluminium by washing with H2SO4. Details of flow rates and concentrations are given.
Patent GB-870734-A (GB)
Title: Improvements relating to the manufacture of belting
Inventor: HICKS ALFRED CHARLES
IPC: D06M17/06
Filed: 1958-07-25
Abstract: 870,734. Laminates. TURNER BROS. ASBESTOS CO. Ltd. July 24, 1959 [July 25, 1958], No. 24049/58. Class 140. Belting is made from fabric plies coated with polyvinyl chloride or other thermoplastic bonding material by heating the plies out of contact with one another, forming them while hot into an assembly passing between calender rolls, and passing the resultant assembly direct from the calender rolls on to a flat surface on which it is maintained flat and unrestrained in air at atmospheric temperature until cool. As shown, rolls 1 of PVC-coated fabric are unwound into a heating chamber 3, and kept out of contact by guide rollers 4. They are then united between calender rolls 6 driven by motor 8. The rolls are hollow and traversed internally by a cooling liquid. They are also sprayed with water or other liquid 9 to provide further cooling and aid separation from the rolls. From the rolls, the assembly passes on to a flat stationary surface 10 along which it is pulled by rolls 11. In a modification (Fig. 3, not shown) only the inner plies pass through the chamber 3. The outer plies are unwound separately, heated by radiant heaters on the sides that are to face the other plies, and passed to the calender rolls. In another modification, the surface 10 and rolls 11 are replaced by a power-driven conveyer with a flat surface. According to the Provisional Specification, the calender rolls may be of metal, or metal with a rubber face and may be plain or etched to form a pattern.
Patent GB-227892-A (GB)
Title: Improvements in and connected with internal combustion locomotives
IPC: B61C11/00
Filed: 1923-09-27
Abstract: 227,892. Rowlands, P. O., Rowlands, W. E., and Rowlands, F. W., (trading as Rowlands & Co., F. W.). Sept. 27,1923. Controlling - apparatus, arrangements of transmission gear in conjunction with; interlocking and guarding against wrong movements; control gear for driving in either direction.-A locomotive comprises an internal-combustion engine power unit rotatably mounted together with the driver's seat on the underframe so that the driving-shaft of the unit can be made to gear with either of the locomotive axles for the purpose of reversing the direction of travel. The turntable 10 is locked in its extreme positions by means of pins 18 operated by a hand-lever 23, movement of the pins being prevented by an arm 29 until the gear wheel 14 which is in mesh with the gear wheel 17 is disengaged by means of a hand-lever 27. A rail 46 is provided by which the driver, when in his seat, can move the engine unit round from one position to the other. The brakes can be applied in any position of the turntable by means of a hand-wheel 30, linkage 32, a rod 37 passing through the centre of the turntable, a transverse lever 40, and toggle links 43. The, hand-wheel can be locked at 48.
Patent GB-586953-A (GB)
Title: Improvements in and relating to tyre ply turn down mechanism
IPC: B29D30/28
Filed: 1943-09-16
Abstract: 586,953. Tyre-building machines. DUNLOP RUBBER CO., Ltd., and McKAY, R. F. Sept. 16, 1943, No. 24153/45. Divided out of 586,952 under which a Specification was laid open to inspection under Sect. 91 of the Acts, April 4, 1944. [Class 144 (i)] The overhanging edges 17, 18 of fabric plies 16 built-up on a flat drum 10 are turned over, prior to the bead assembly, by a series of rotatably-mounted discs movable towards and from the centre of the drum. As shown, each set of discs 28-31, carried on a head 27 on the end of the piston-rod 25 of a power-cylinder 19, comprises a single disc 29 engaging between pairs of discs 28, 30, and a final wiping-disc 31 having a bevelled face. The disc 31 is arranged nearest to the end face of the drum to consolidate the folded-over plies.
Patent GB-205290-A (GB)
Title: Emergency or safety device for escalators, or endless conveyors of the step or section type
IPC: B66B29/00
Filed: 1922-09-06
Abstract: 205,290. Waygood-Otis, Ltd., (Otis Elevator Co.). Sept. 6, 1922. Moving stairways.-In electrically driven moving stairways in which the supply of current to the motor is cut off when the speed of the stairway exceeds a predetermined value, a pendulum governor C is oscillated by cams 11 connected to the driving mechanism in such a manner that during normal working the finger 28 does not contact with the bolt 29, but on the speed exceeding a predetermined value, the finger moves the bolt and trips the trigger 32 of the switch D, thereby opening the connection between the contacts 35 and stopping the supply of current to the motor. When the switch D is opened, the electromagnet E is de-energized and a pawl 37 connected to its core and hinged to the framework drops into engagement with teeth 12 on one member of a multiple disc friction brake which stops the stairway.
Patent GB-583777-A (GB)
Title: Improvements in or relating to sliding clasp fasteners
IPC: A44B19/40
Filed: 1944-12-04
Abstract: 583,777. Sliding-clasp fasteners. CORNER, G. H. C., and LIGHTNING FASTENERS, Ltd. Dec. 4, 1944, No. 24174. [Class 44] The stringer tape of a sliding-clasp fastener is provided with means to indicate visually the minimum amount of space to be allowed between the fastener members and the edge of the article to which the fastener is to be secured in order to permit free movement of the slider without obstruction by said edge or article. Preferably, the indication means comprises a longitudinal zone of narrow but finite width produced in weaving and differing from the rest of the tape in pattern, colour, material, thickness, or degree of lustre. For example one or more warp threads may differ originally in colour, or may have a different power of absorption so as to differ finally in colour from the other threads when subsequently dyed. Alternatively, the indication may be produced by a local dyeing or printing operation or by sewing into the tape a thread of different colour. Examples are also mentioned having a zone with two to six mercerized cotton threads woven into a tape which is otherwise of ordinary cotton, or utilizing natural or artificial silk.
Patent GB-1532584-A (GB)
Title: Filter apparatus for thickening suspensions of fibrous material
IPC: D21D5/04
Filed: 1977-06-09
Abstract: 1532584 Rotating disc filter J M VOITH GmbH 9 June 1977 [12 June 1976] 24176/77 Heading BID A filter for thickening fibrous suspensions comprises a hollow shaft 3 rotatably mounted in a filter trough 2; hollow filter discs 4 mounted on said hollow shaft; a suction header 6 communicating with said hollow shaft and having at least one downpipe 7a or 8a connected thereto, each disc having fibrelifting vanes 12 arranged thereon for lifting fibrous material to a respective one of outlets 9 between the discs and means arranged for creating turbulence in said trough. Sprays 16 and 14 may clean fibre from filter discs, and an auger 11 removes fibre from outlet chutes 9. Two grades of filtrate may be separately collected, the later filtrate in container 8 being less turbid than the earlier filtrate in container 7. The turbulence generating means may comprise propellers 17, a rotatable worm (18, Fig. 3 not shown) or spray nozzles (19, Fig. 4 not shown).
Patent GB-1429515-A (GB)
Title: Manufacture of encapsulated interconnection circuits, or inte grated magnetic memory matrices
IPC: H05K3/42
Filed: 1973-05-21
Abstract: 1429515 Printed circuits THOMSON-CSF 21 May 1973 [24 May 1972] 24201/73 Heading. H1R [Also in Division H3] A method of manufacturing an encapsulated circuit, e.g. a magnetic store circuit, comprises depositing, using masking and etching techniques, conductors 2, 3, 4, 5 and 6 on opposite surfaces of copper substrate 1 with interconnections through eyelet holes 7, 8, covering one surface of the assembly with photoresist layer 11 and applying strips 9, 10 of photoresist to the. other surface, contacting the latter surface. with a solvent selective for copper to dissolve the copper substrate where it is not protected by strips 9, 10, removing strips 9, 10 and applying encapsulating material 21 to give the arrangement illustrated in Fig. 5, removing resist layer 11, dissolving the remainder of the copper thus exposed and applying encapsulating material over this surface.
Patent GB-1517351-A (GB)
Title: Bit-synchronous transmission of binary data
IPC: H04L25/48
Filed: 1975-06-05
Abstract: 1517351 Bit-synchronous transmission of binary data; diphase coding SIEMENS AG 5 June 1975 [12 June 1974] 24212/75 Heading H4P Binary data is transmitted bit-synchronously with the aid of a binary signal whose changes in binary value occur in the middles of the individual bits of the binary data and represent these individual bits, the different individual bits being assigned different respective bit signals and a signal mixture being transmitted which consists of these bit signals superimposed on one another, each bit signal having an amplitude g(t) which during the bit interval t 0 -t 4  to which the relevant bit signal is assigned crosses opposite polarity predetermined threshold values S1, S2 during respective halves of the bit interval, which amplitude has a zero value at the commencement, the end and midpoint of the bit interval and which amplitude lies between said threshold values during each bit interval to which the relevant signal is not assigned, each bit signal having a precursor and a post cursor occurring during the bit intervals to which the relevant signal is not assigned, the amplitudes of the precursor and postcursor lying between the threshold values and having zero values at times when the amplitude of the bit signal that is assigned to the relevant bit interval is outside the range between the threshold values (this latter range is defined not to include the threshold values themselves).
Patent GB-1470854-A (GB)
Title: Process for the manufacture of magnesium oxide particularly in active form
IPC: C01F5/08
Filed: 1974-05-31
Abstract: 1470854 Manufacture of MgO VEITSCHER MAGNESITWERKE - ACTIEN - GES 31 May 1974 [1 June 1973] 24232/74 Heading ClA Magnesium oxide is manufactured by spraying an aqueous suspension of magnesium hydroxide, as droplets in the form of a spray mist, into a stationary reaction furnace maintained at 350 C. at least, to dehydrate and decompose the hydroxide to the oxide. For manufacture of active MgO with a specific surface of at least 100 m.<SP>2</SP>/g. the reaction zone temperature should be in the range 400-700 C. and for a specific area of less than 100 m.<SP>2</SP>/g. a temperature of above 700 C. should be maintained.
Patent GB-1271936-A (GB)
Title: Improvements in or relating to devices for producing output signals in digital form
Inventor: HALSALL JAMES RICHARD
IPC: G06F7/68
Filed: 1968-05-22
Abstract: 1,271,936. Analogue/digital converter. IMPERIAL CHEMICAL INDUSTRIES Ltd. 16 May, 1969 [22 May, 1968], No. 24418/68. Headings G4A and G4H. An analogue/digital converter for converting an unknown frequency signal P 1  (Fig. 10) to a Gray coded binary signal includes a frequency comparator FC comparing the input signal with a reference feedback signal P 2  derived from a frequency multiplier B receiving clock pulses at a reference frequency and delivering a signal P 2  the average frequency of which is related to the count in a Gray coded binary counter GC 1  controlled by the frequency comparator. In the embodiment described the counter GC 1  comprises a chain of JK flip-flops F a -F g  (Fig. 2) receiving pulses and a direction control signal from the frequency comparator and delivering a Gray coded output a 2 -g 2 . This output is converted into binary coded form a 1 -g 1  by exclusive OR gates, the outputs from which are fed to the multiplier B (Fig. 10) the least significant bit being additionally fed to the gate receiving the direction control signal. The embodiment of Fig. 2 which prevents overflow in either direction may be modified (Fig. 5, not shown) to accumulate pulses until the counter is full when subsequent pulses are subtracted. The multiplier comprises a chain of flip-flops (F x ...F f , Fig. 7, not shown) operating as a Gray code counter receiving a frequency signal (f) and delivering to gates (G1-G7) signals at frequencies f/2...f/128. The gates are controlled by the counter GC1 so that an output feedback frequency signal, the average value of which is between 0 and 127f/128 is obtained. Alternatively (Fig. 8, or Fig. 9, not shown) a two phase multiplier may be used in which pulses of a reference signal of frequency 2f are fed to each of two leads under the control of a bi-stable (Ft) also receiving the reference pulses. One lead drives the counter to produce the output pulse trains which are connected to two sets of gates (G1-G4, A1-A4). Output frequencies of between 0 and 15f/16 may be obtained from each set of gates. These multipliers may be used in a modification of Fig. 10 (Fig. 13, not shown) in which higher frequency signals may be digitized by increasing the reference feedback signal by pulses from the second set of gates of the multiplier to shift the zero level so that a Gray coded output of, e.g. 0 to a 1000 is obtained for an input frequency of 5000-6000 cycles per second. A phase lock unit PL (Fig. 10) controlled by clock pulses C 1  of frequency 2f is used to prevent coincidence between the arrival of input and feedback pulses at the frequency comparator. Input pulses arriving between pulses C1 are immediately stored and pulses arriving during a pulse C1 are stored at the end of the pulse, stored pulses being read out at the next pulse. Several such digitizers may be connected to a computer (Fig. 14, not shown).