baber/WOPTO huggingface dataset:
Patent GB-1036984-A (GB)
Title: Propylene oxide polymers and copolymers and catalysts thereof
IPC: C08G65/26
Filed: 1965-04-09
Abstract: A catalyst for the homopolymerization of propylene oxide or for the copolymerization of propylene oxide with butadiene comprises a mixture of a dialkyl zinc in which the alkyl radicals have 2 to 6 carbon atoms and a bis-(trialkylphosphine) nickel dihalide in which the alkyl radicals have 2 to 6 carbon atoms, ethylene - bis - (diphenylphosphine) nickel dihalide, bis-(triphenylphosphine) nickel dihalide or a bis-(trialkylphosphine) cadmium dihalide in which the alkyl radicals have 2 to 6 carbon atoms, the dihalide being a dichloride, dibromide or diiodide.  Specified dialkyl zincs are diethyl, di-n-butyl, diisobutyl and dihexyl, zinc, while specified dihalides are ethylene-bis-(diphenylphosphine) nickel dichloride, bis-(triphenylphosphine) nickel dichloride, bis-(tri-n-butyl phosphine) nickel dichloride or diiodide, bis - (tri - n - butyl phosphine) cadmium dichloride. The reaction takes place in solution in a hydrocarbon solvent.
Patent GB-1302111-A (GB)
IPC: C08G81/02
Filed: 1970-03-31
Abstract: 1302111 Partially hydrogenated alpha methylstyrene block copolvmers SHELL INTERNATIONALE RESEARCH MATTSCHAPPIJ NV 31 March 1970 [1 April 1969] 15179/70 Heading C3P Block copolymers of the formula  where each A is a partially hydrogenated polymer block of alpha methylstyrene, and each B is a hydrogenated polymer block of a conjugated diene or a polymer block of an alpha olefin, are obtained by sequential polymerization using a mono- or difunctional initiator or by coupling a living two-block copolymer, and subsequently hydrogenating. In the example, an alpha methylstyrene-butadiene-Li block copolymer is obtained by sequential polymerization in the presence of an alpha-methylstyrene-sec-butyl lithium reaction product and tetrahydrofuran and coupled with phenyl benzoate, and hydrogenated using as catalyst a trialkyl aluminium and a mixture of cobalt and nickel octoates.
Patent GB-328135-A (GB)
Title: Improved means for connecting telephone cables
IPC: H02G15/113
Filed: 1929-05-15
Abstract: 328,135. Renyard, F. May 15, 1929. Junction boxes.-A joint for teleplione cables comprises a sleeve B of lead, &c., divided longitudinally and provided with flanges D for connecting the two parts and end flanges E for bolting to flanges F wiped on to the sheathing G of the cables reinforcing strips K, L, M of iron being used to strengthen the flanges. Rubber packing H is employed between the longitudinal flanges and asbestos J between the end flanges the latter being unaffected by the heat in making the wiped joint.
Patent GB-313154-A (GB)
Title: Process of reactivating contaminated adsorptive carbon
IPC: C01B31/08
Filed: 1929-05-15
Abstract: 313,154. Metallges. Akt.-Ges. June 8, 1928, [Convention date]. Carbon. - Pulverulent to five-grained absorptive carbon is reactivated by converting it into moulded blocks with the addition of binding media if desired, and treating, under conditions in which relative movement of the pieces of carbon is avoided, with gaseous mixtures containing free oxygen, in amounts less than 8 per cent by volume. Under the conditions of treatment, a zone of actual activation is formed, which moves onward in the direction of flaw of the gases. The carbon may be preheated by superheated steam, hot air &c. The regenerating gas may be preheated to a temperature below 250‹ C., preferably 120-200‹ C. When the process has begun, the temperature of the gas may be reduced below that at which oxidation of the impurities begins, for example where mixtures of air and carbon dioxide are employed, the temperature may be reduced to normal level. The temperature in the raction zone is about 500-600‹ C. The oxygen may be mixed with steam with or without other gases, such as combustion gases. The carbon may be treated in a underlayer in a heat insulated container, the regenerating gases being passed upwards therethrough. An under layer of readily oxidizable material, e.g. carbon impregnated with substances of low ignition temperature, may be provided where the reaction does not commence at low temperatures. The process may be a continuous one, the carbon and the gases being in countercurrent flow. A preliminary purification off the carbon with solvents may be included, and if inorganic substances which are not readily oxidizable to volatile compounds are present, treatment with acids or alkalies followed by washing with water may be employed prior or subsequent to the actual reactivation step. Mixtures of carbon with other adsorbents, e.g. wood charcoal, fuller's earth or kieselguhr, may be treated. The moulded bodies, e.g. filter cakes, may be broken up into pieces of suitable size before treatment or may be treated as a whole by passing the gas over one or both sides of the cakes. Examples are given in the Specification of the regeneration of spent carbon from sugar and oi[ refining.
Patent GB-730750-A (GB)
Title: A plastic injection-moulding machine
Inventor: HENDRY JAMES WATSON
IPC: B29C45/70
Filed: 1953-06-01
Abstract: 730,750. Mixing appliances. JACKSON & CHURCH CO. June 1, 1953, No. 15210/53. Class 86. [Also in Group V] In an injection moulding machine (see Group V) a pre-plasticizing unit consists of a screw operating in a heated screw chamber. The screw may be of the form shown in Fig. 6 or Fig. 7. In Fig. 7 the screw has breaker plates 150, 153, 154, having slots 152 in the edges thereof; these plates break up the material, e.g. rubber; they may be independent of the screw, being rotated as by a motor - driven pinion 155. Specifications 684,582 and 711,875, and U.S.A. Specifications 2,359,840 and 2,501,595 are referred to.
Patent GB-368607-A (GB)
Title: Process for manufacturing ebonite incorporating stone chippings or the like
IPC: C08K3/013
Filed: 1931-05-22
Abstract: Ebonite containing stone chippings, gravel and the like is made by compounding rubber with fillers, vulcanizing ingredients, &c., crumbling the mix, adding the chippings, moulding and vulcanizing. According to an example, 15 parts of unvulcanized rubber, 20 parts of talite (a siliceous earth containing oxides of iron and aluminium), 20 parts of chalk, 25 parts of lime, 5 parts of asphalt, and 15 parts of sulphur, are compounded on mixing rolls, partially vulcanized by heating to 150 DEG  C. for 15 minutes, and crumbled between cold rolls.  7 parts of this mixture are added to 11 parts of stone chippings, and blocks are moulded.  If intended for paving, an ebonite layer and resilient rubber cap are applied, and the whole is vulcanized.
Patent GB-1254788-A (GB)
Title: Improvements in or relating to devices for indicating the condition of a switch
IPC: H01H9/16
Filed: 1969-03-24
Abstract: 1,254,788. Protective arrangements. BROWN, BOVERI & CO. Ltd. 24 March, 1969 [26 March, 1968], No. 15273/69. Heading H2K. An arrangement for indicating the on/off condition of a main switch 1 having auxiliary contacts 2, comprises an auxiliary transformer 3 having a primary winding 31 connected in series with impedance 5, 6 across an A.C. supply 4, 20, and a secondary winding 32 connected across the contacts 2. When the switch 1 is closed, the contacts 2 short circuit the winding 32 so that the primary winding 31 has a low impedance and the resulting voltage drop across the impedance, e.g. a resistor 6, provides an output indicating that the switch 1is "on". When the switch 1 is open, the contacts 2 are open, the winding 32 is not short-circuited so that the impedance of the primary winding 31 is high and there is little voltage across the resistor 6. A rectifier 7 may be used instead of the connection 22 so as to provide D.C. output signal. The operation of this arrangement may be checked by a further arrangement comprising an auxiliary transformer 11 with a primary winding III in series with an impedance 12 and a secondary winding 112 connected across further auxiliary contacts 10 which are open when the contacts 2 are closed. Further secondary windings of the two transformers are connected in opposition and in series with a rectifier 13 and resistors 14, 15. As long as one pair of auxiliary contacts 2 or 10 is closed and the other is open, one secondary winding 113 or 33 produces an output so that a signal is available across the resistor 15. Should both pairs of auxiliary contacts 2, 10 be closed, nothing is induced in the secondary windings 33, 113 and should both pairs of contacts 2, 10 be open, the potentials induced in these secondary windings are in opposition, so that in neither case will there be a signal across resistor 15.
Patent GB-749498-A (GB)
Title: Recording-chart drive apparatus
IPC: G01D15/32
Filed: 1954-05-24
Abstract: 749,498. Recording-apparatus. FOXBORO CO. May 24, 1954 [May 25, 1953], No. 15275/54. Class 106 (4). [Also in Groups XXIV and XXVIII] A pulse receiver 12 for use in a fluid pulse drive system for record charts comprises bellows 72 for receiving pulses of fluid under pressure, a ratchet-wheel 78 and a lever 74 pivoted on the shaft 14 of the ratchet-wheel, a spring pawl 76 on the lever advancing the ratchet-wheel when the bellows expand in response to a pulse and a spring pawl 82 preventing return movement of the ratchet-wheel when a spring 80 acting on the lever compresses the bellows after the pulse subsides, the sides of a groove 77 engaging the lever 74 to limit the advance and return movement of the spring pawl 76 to a single ratchet tooth. A synchronous motor 52 controls a relay 32 transmitting pneumatic pulses to a plurality of receivers 12 for driving in unison record discs mounted on the shafts 14. The relay 32 comprises two chambers 30, 42 with communicating passage 56 which is closed by an exhaust valve body 54 when a nozzle 38 is closed, being moved by air under pressure supplied through a pipe 4 and passing through a restrictor 34 and pipe 40 to overcome the resilience of a diaphragm 43 which carries the valve part 54 and divides the chamber 42. Meanwhile a valve stem extending from the body 54 through the passage 56 presses a ball valve 60 against a spring 62 to open the passage 56 to the chamber 30 and allow air under pressure to flow along conduits 8, 10 to the receivers 12. Periodically a cam 50 driven by the synchronous motor 52 rocks a flapper 44 to open the nozzle 38 to atmosphere whereupon the reduction in back pressure in pipe 40 allows the diaphragm 43 to spring back and open one end of passage 56 while allowing the valve 60 to close the other end thus sealing off the conduit 8 the pressure in which is dissipated through an exhaust flue 68. Specification 670,427, [Group XXIX], is referred to.
Patent GB-1426154-A (GB)
Title: Bearing construction
IPC: F16C23/08
Filed: 1974-04-05
Abstract: 1426154 Bearings BORG-WARNER CORP 5 April 1974 [21 May 1973] 15289/74 Heading F2A In a rolling bearing assembly comprising a housing 12, an inner race 24, and an outer race 28 constructed of two parts joined together, a locking pin 40 is situated in an opening 38 in the outer race, the pin having enlarged terminal portions 42, 43 and a reduced waist portion 41; the housing has a recess 44 for receiving one terminal portion 42, and the outer race opening 38 has a complementary shape to the waist portion and the other terminal portion of the pin, whereby the pin effectively limits relative rotation between the outer race and housing. The waist portion of the pin may be cylindrical or conical. The pin is of a ductile metal or of PFTE, and may be constructed as a blind rivet. The bearing is held in the housing by means of a ring member 20 and a snap ring 22; alternatively the housing is split. The outer race parts may together define the opening 38, and may be welded together with the pin in place.
Patent GB-431492-A (GB)
Title: Improvements in electromagnetically-operated time-limit relays
IPC: H02H3/027
Filed: 1934-05-22
Abstract: 431,492. Eddy - current brakes. CHEETHAM, G. A., Hamewith, Westmorland Road, Urmston, Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. May 22, 1934, No. 15337. [Class 103 (i)] [See also Groups XXXVII and XXXV] In an eddycurrent braking device for a timelimit electromagnetic relay, in order to give a substantially constant time delay over a selected range of temperature the permanent braking magnet for the eddy-current disc has polepieces which are partially or wholly composed of a material having a negative permeability temperature characteristic. As shown in the Figure, on operation of the relay, the eddycurrent disc 10 is driven through gearing and rotates between the poles of a permanent magnet 11. One or both of the polepieces of the magnet 11 is provided with a fringe 12 of material having a negative permeabilitytemperature characteristic, such as is described in Specification 30297/10, [Class 35]. The braking action is thereby made constant and imposes a constant time-delay in the contact closure of the relay within a selected range of temperature variation, e.g. from 5 to 50‹ C. The polepieces of the magnet 11 may, alternatively, be wholly composed of the material referred to.
Patent GB-803534-A (GB)
Title: Improvements in alternating current arc welding systems
IPC: B23K9/10
Filed: 1956-05-18
Abstract: 803,534. Control systems for welding arcs. FOSTER TRANSFORMERS, Ltd., and JENNINGS, R. E. May 10, 1957 [May 18, 1956], No. 15518/56. Addition to 769,433. Class 38 (4). A safety-device for an alternating current arc welding system as described and claimed in the parent Specification is modified in that the relay actuating the normally open and normally closed contacts 7, 8, respectively, is a secondary relay 52 which relay is under the control of a primary relay 5 energized when the welding electrode E is brought into contact with the workpiece W.
Patent GB-312091-A (GB)
IPC: B23G1/18
Filed: 1929-05-18
Abstract: 312,091. Muhlschlegel, K. May 18, 1928, [Convention date]. Turning; tapping. - In a tapping-machine articles such as nut blanks are held by a gripping-device that is released automatically when the tap has passed through the work. The arm d acts as a transfer arm for the blank from a position where it is turned, bored and cut off from bar stock. As the tap b passes through the nut an arm h is rocked by an adjustable stop g to release the work and allow it to be passed over the curved shank of the tap.
Patent GB-490508-A (GB)
Title: Improvements in apparatus for grading fruit and vegetables by size
IPC: B07B13/065
Filed: 1938-05-26
Abstract: 490,508. Sorting fruit and vegetables. CHAMBERS, P. May 26, 1938, No. 15742. [Class 117] In apparatus for grading fruit and vegetables of, the kind comprising end'less belts a, Fig. 2, arranged fanwise so that a space of width increasing from the feed end to the discharge end is provided between the upper run of each pair of belts, the belts are guided during their upper run on supports g, Fig. 6, which are arched longitudinally. The spacing of the belts may be varied by adjusting the guides, or the guides may be built into a single frame which is replaceable by another with different spacing. Vibration may be imparted to the belts by mounting the guides on springs and connecting them through mechanism which may be adjustable to an eccentric rod. The belts may pass over and be driven by individual pulleys b or over drums, and jockey pulleys may be provided to maintain them at correct spacing. Spring-actuated rollers may be provided to retain the belts in contact with the driving pulleys and guides. Transverse shoots c or travelling bands under the upper run of the belts collect the graded products; and the mixed products are fed to the narrow end of the grader by feed bands m in the bottom of troughs F.
Patent GB-1189102-A (GB)
Title: Force Ratio Sensers
Inventor: LAWRENCE OWEN NAPIER
IPC: G01L5/18
Filed: 1966-04-12
Abstract: 1,189,102. Force-ratio sensor. JOSEPH LUCAS (INDUSTRIES) Ltd. July 3, 1967 [April 12, 1966], No. 15801/66. Heading G1W. A device, whereby the ratio between two forces can be sensed, comprises the combination of two mechanisms each comprising a roller 30 (31), mounted in a fixed body by a pair of arms 32, 34 (33, 35) pivoted to one another and to the roller 30 (31) and the body respectively, and a pair of levers 38, 37 (39, 37) through which forces can act upon the roller 30 (31), the two mechanisms being combined so that the arms 34, 35 are angularly movable together (being offset at right angles to one another) and so that one lever of each pair is constituted by a single lever 37 pivotally mounted in the body. In the practical embodiment of Fig. 5 the position of a rod 45 slidable within the body under the control of a servomotor for maintaining equilibrium under the application of variable forces applied by capsules 46, 47 to levers 38, 39 acting on rollers 30, 31, is related to the ratio of those forces. The rollers 30, 31 are pivoted on arms 32, 33 themselves pivoted on annuli 34, 35 rotatably bourne by their outer peripheries in the body and linked to the rod 45 so as to turn together. The servomotor comprises a piston 48 carried by the rod 45 and slidable in a cylinder 49 supplied with fluid-pressure through restrictions 49 and with restricted outlets 50, 51. The restriction of outlet 51 is varied by an edge of an arm movable by the lever 39.
Patent GB-1402250-A (GB)
Title: Coupling members for spools reels or the like
IPC: F16D1/091
Filed: 1971-05-19
Abstract: 1402250 Coupling reels to shafts; ratchet clutches J A HILL 5 July 1972 [19 May 1971] 15867/71 Headings F2U and F2C An expanding mandrel for gripping the bore of a reel tube 10 comprises a resilient split sleeve 16, having an internal surface in threaded engagement with a tapered external screw thread on a rigid core member 14, such that gripping engagement and disengagement can be effected by appropriate rotations of member 14 relatively to sleeve 16, with the resulting axial relative movement of sleeve 16 limited by annulus 17, and with a disc member 12 attached by screws 15 to member 14, for connection of the assembly to unspecified external means for providing both bearing support and rotary drive. The split sleeve 16 carries a spring retaining ring 18. In another embodiment, Fig. 2B (not shown), a sleeve (26) remains in one axial location, and a core member (29) is caused to travel axially, with its keyways (291) engaging keys (241) carried by an inner driving member (24), and having grub screws (293) as stops to limit travel. In an alternative arrangement, Fig. 4B (not shown), a rigid core (44) carries-a key (441) which engages a continuous keyway (421) in an inner driving shaft (42). In a further embodiment, Fig. 5, an inner expanding mandrel assembly 51, mounted on a stub shaft 52, engages the bore of an outer expanding mandrel assembly 501, which in turn engages the bore of a reel tube 50. The resilient sleeve may be of rubber or of silicone rubber material. Alternatively, the sleeve may be of composite construction, Fig. 7 (not shown), having internally threaded metallic portions of substantially quadrant cross-section (750), bonded to a slit resilient jacket (716).
Patent GB-922552-A (GB)
Title: Improvements in or relating to the moulding on of rubber or the like soles to shoe bottoms
IPC: B29C35/00
Filed: 1958-05-17
Abstract: 922,552. Moulding soles on to footwear uppers. BRITISH UNITED SHOE MACHINERY CO. Ltd., and F. C. CHOICE. May 19, 1959 [May 17, 1958], No. 15892/58. Class 87(2). The end portions of the side moulds 104 are moved towards their closed position so as to engage the upper on the foot form 102 at the toe and heel while the side portions are still out of engagement with the upper and relative movement is then effected, heightwise of the shoe, between the foot form 102 and the side moulds 104 to cause the end portions of the latter to exert pressure on the upper in the toe and heel regions so as to bring an inner sole member firmly into engagement with the foot form and the closing movement of the side moulds is completed while such pressure is being exerted. The foot form amy be moved heightwise after the side moulds have been advanced to partially closed positions, e.g. with their end portions still separated by # inch or the side moulds may be advanced towards each other, e.g. to within # inch as above, so as to engage the toe and heel of the upper on the foot form which is already in position, the foot form they being moved heightwise by about # inch, final movement of the side moulds occurring after the heightwise movement of the foot form has ceased. In order to raise and lower the foot form 102 relative to the moulds, tie rod 115 is raised or lowered by rotation of the eccentric 127 about shaft 129, thus swinging crosshead 110 about its pivotal connection 111 with tie rod 114. The crosshead may be swung about pivot 105 to present the foot form in a conveneint position for fitting or removing the shoe. A lost motion arrangement may be included in the means for moving the foot form, which is actuated by fluid pressure operated means for closing and opening the side moulds so as to allow the side moulds to partake of some of their closing movement before movement is imparted to the foot form. Specifications 859,671 and 922,551 are referred to.
Patent GB-438459-A (GB)
Title: Improvements in change speed gearing
IPC: F16H3/66
Filed: 1934-05-28
Abstract: 438,459. Variable speed gearing. CLAYTON, A. C., 64, Church Road, Willesden, London. May 28, 1934, No. 15906. [Class 80 (ii)] Relates to gearing, particularly of the kind described in Specifications 412,757 and 429,768, which comprises a plurality of connected or integrally formed planet pinions mounted in a rotatable carrier, and in geared connection with input and output sun-wheels and with one or more annular wheels adapted to be freed and arrested to effect gear changes, the carrier being provided with an idle pinion meshing with a planet pinion and with an annular wheel. According to the invention an auxiliary input sun-wheel is provided to obtain an overdrive when required. An input sun-wheel 1 gears with planets 2 integral with layshafts 3 and other planets 4. The layshafts 3 are mounted in a rotatable carrier 5 which also carries idle pinions 6. The planets 2 mesh directly with annular reaction wheel 7, but the planets 4 are in gear with annular reaction wheel 8 through the idle pinions 6. An output sun 9 gears with planets 4 and is integral with a short shaft 10. The carrier 5 has clutch teeth 11, and a sleeve 12 splined on shaft 10 has teeth 13. These teeth may be engaged singly or together by teeth 15 on a sliding member 14. The wheels 7, 8 are arrested to give the speed changes by roller or ball detents 19 as described in Specification 429,768. The input sun-wheel 1 is integral with a sleeve 20 with clutch teeth 21. The auxiliary input sun-wheel 25 meshes with planets 26 integral with layshafts 3, and is integral with a sleeve 27 journalled on sleeve 20 and provided with clutch teeth 29. The teeth 21, 29 may be engaged separately by teeth 24 on a clutch member 23 splined on driving shaft 22. With either wheel 1 or 25 in use, a range of speeds may be produced by the braking members. The detents 19 and clutch member 14 may be actuated with the clutch member 23.