baber/WOPTO huggingface dataset:
Patent GB-1121195-A (GB)
Title: Preparation and uses of polymeric organolithium complexes
IPC: C08F8/42
Filed: 1967-05-02
Abstract: A complex comprising a polymer which is derived from a hydrocarbon having a conjugated terminal double bond and has a plurality of lithium-amine groups attached to allylic, benzylic or aromatic carbon atoms is produced by reacting said hydrocarbon polymer with a non-aromatic tertiary-amine which is a diamine or an amine containing bridgehead nitrogen and with a compound LiR, in which R is an alkyl, cycloalkyl, alkenyl, cycloalkenyl, phenyl, alkylphenyl or phenylalkyl group containing not more than 30 carbon atoms.  Suitable polymers are those derived from styrene, alpha-methyl styrene, butadiene or isoprene and mixtures thereof, including block polymers.  The amine is preferably a chelating amine, e.g. an N,N, N1,N1-tetraalkylalkylene diamine, others specified including triethylene diamine, quinuclidine, 1-aza[2.2.1]-bicycloheptane, sparteine and azaadamantanes. The complex may be grafted with, e.g., styrene, methyl styrene, an alkylacrylate, acrylonitrile, isoprene or ethylene or, alternatively, reacted with compounds providing non-polymeric substituents.  In the examples, the complexes are formed from N,N, N1,N1 - tetramethylethylene diamine, n-butyl lithium and polystyrene in Examples 1, 3 to 6 and 8 to 12, a styrene-isoprene copolymer in Example 2 and polyisoprene in Example 7.  The polymers used in Examples 1 and 2 are prepared in solution in cyclohexane using a solution of the aforesaid amine and n-butyl lithium in ethyl benzene as catalyst and the polymer in Examples 9 and 21 is prepared using n-butyl lithium as catalyst.  Graft polymers are prepared from the complexes of Examples 1 to 10, using as graft monomer (1) styrene, (2) to (4) and (7) isoprene, (5) acrylonitrile, (6) methyl methacrylate, and (8) to (10) ethylene.  The complex of Example 11 is reacted with CO2 and that of Example 12 with acetone.  The resulting products may be incorporated with lubricating oils, waxes or plastics.
Patent GB-775970-A (GB)
Title: Thermoelectric generator
Inventor: FRITTS ROBERT WASHBURN
IPC: G01K7/06
Filed: 1954-07-12
Abstract: An element of a thermocouple is described consisting of an alloy of lead with 25 per cent-27.55 per cent of selenium containing a trace of tellurium.  Another alloy consists of lead with 35 per cent-38.05 per cent of tellurium containing a trace of selenium.  Specifications 501,410, 578,187, 765,884, 766,999; 775,968 and 775,969 [both in Group XXXVI] are referred to.
Patent GB-630733-A (GB)
Title: Improvements in or relating to package delivery shoots
IPC: B65G69/00
Filed: 1946-07-09
Abstract: 630,733. Shoots. McQUEEN, P. T., BOWIE, W. W., and GIBSON, H. July 9, 1946, No. 20435. [Class 78 (i)] A package delivery shoot 1 comprises a retarding wall 6 movably suspended in a downwardly inclined position within the shoot; a cushioning wall 21 movably suspended from the retarding wall ; and resilient means 7 to hold the walls in resilient retarding engagement with descending packages. In the Figures, wall 6 is pivoted at 5 to the shoot, wall 21 is pivoted at pin 12 to wall 6 ; and flap 30 is pivoted to wall 21 and joined to the shoot 1 by flexible curtain 31. Wall 6 is supported by cables 7. which are attached to the ends of pin 12 that pass through slots 13 in inner sidewalls 11 and which pass through back wall 4 over pulleys 8 and are weighted by crossbar 9. Crossbar 9 moves along guide bars 10 and its movement is retarded by hydraulic cylinder 15. The fluid supply to the latter from tank 17 is adjustable by valve 18. Cushioning wall 21 is similarly resiliently supported by cables 27 weighted by crossbar 29. Discharge platform 24 is supported on cranked rod 26, the ends of which rest in slots in side pieces 32 and its height of discharge is adjusted by alternative slots or handle 33 which has a hole 34 to engage one of the pins 35. Two such shoots may be used together and they may be in staggered relation, and there may be adjustable discharging shutters between the shoots. Both retarding and cushioning walls may be fitted with metal runners to guide the package in its descent.
Patent GB-1081576-A (GB)
Title: Improvements in electrical measuring systems
Inventor: BURNETT THOMAS BRIAN
IPC: G01R31/08
Filed: 1965-05-14
Abstract: 1,081,576. Protective arrangements. ENGLISH ELECTRIC CO. Ltd. May 13, 1966 [May 14, 1965], No. 20476/65. Heading H2K. [Also in Division G1] A system for determining an electrical characteristic of a high voltage transmission line, comprises means on the line for monitoring the current through the line and converting the current into a train of pulses having a repetition rate proportional to the magnitude thereof, transmitting means responsive to the pulses to emit pulsating light signals and receiving means remote from the line for receiving the light signals and deriving therefrom an indication of the characteristic. In the impedance protective arrangement shown, a current transformer 1 supplies pulse generators 4A, 4B through half-wave rectifiers 3A, 3B, the output of the pulse generators being amplified at 5A, 5B and applied to light emitters 6A, 6B which may be gallium arsenide or gallium phosphide diodes. These components may be arranged as disclosed in Specification 1,081,575. The light pulses are transmitted through optical systems 9A, 9B comprising light guides, e.g. glass rods or lenses housed in an insulating bushing, to photo-electric, cells 10A, 10B, e.g. of the silicon solar cell type. The outputs from these cells are amplified at 11A, 11B and applied to counters 12A, 12B. Further pulse generators 18A, 18B are supplied through rectifiers 17A, 17B, and an amplifier 16A from a potential divider 15. The resulting pulse trains are amplified at 19A, 19B and applied to counters 20A, 20B. The four counters are. controlled by a timer 13 and their outputs are compared in comparators 14A, 14B, the comparators comparing the outputs in different half-cycles of the A.C. in the transmission line. Should the pulse count for the current exceed that for the voltage, a fault indication is given. Figs. 4 to 6 (not shown) illustrate arrangements effective to determine line-to-line faults, pulse trains being derived from two phases of a polyphase line. Reference is also made to the use of the system to respond to line current only, to power or KVA and also to the rate of change of line current.
Patent GB-1078184-A (GB)
Title: Improvements relating to the production of a rough corrosionresistant surface on iron re-inforcing material
IPC: E04C5/01
Filed: 1965-05-14
Abstract: A corrosion resistant surface is produced on an iron surface by immersing in an aqueous solution containing 2.5 to 15% by weight of iron chloride.
Patent GB-778133-A (GB)
Title: Improvements in or relating to circuits using point type transistors
Inventor: COOKE-YARBOROUGH EDMUND HARRY
IPC: H03K17/60
Filed: 1953-07-23
Abstract: 778,133. Transistor switching circuits. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Oct. 25, 1954 [July 23, 1953], No. 20526/53. Class 40(6) In a point contact transistor circuit in which, when conducting, the emitter and collector currents are equal, means are provided between the base and a control terminal to prevent heavy current being drawn from the control signal source. It is stated that due to "hole" storage the collector current tends to continue for about one micro-second after the switching off signal commences. A second transistor may be employed between the control source and the first transistor and arranged to carry a much smaller current so that the "hole" storage current effect is proportionally smaller. Current to a load 21, Fig. 1, such as a magnetic recording head is controlled by the emitter-collector circuit of transistor 18 which is switched by varying the base potential. The base is connected to the collector of a second transistor 10 having a load 22 and switched by varying the potential of terminal 14 coupled over diode 15 to the base. When the potential of terminal 14 is held negative, emitter-collector current flows to maintain the collector potential and thus the base of transistor 18 above its emitter potential so that transistor 18 is in the off condition. Fig. 2. A control signal raises the potential signal of terminal 14 so that transistor 10 is cut off, only a small current being drawn from the control source since the collector current prior to switch-off is relatively small. The fall in base potential allows transistor 18 to conduct and pass heavy current through load 21. When the potential of terminal 14 is again lowered to switch transistor 10 on and 18 off, a heavy current flows momentarily in the base lead of transistor 18 but this is not reflected back into the source of controlling signals.
Patent GB-531231-A (GB)
Title: Improvements in or relating to shutter devices for optical sound-reproducing apparatus
IPC: G11B5/86
Filed: 1939-07-14
Abstract: 531,231. Optical sound reproducing apparatus. RADIO CORPORATION OF AMERICA. July 14, 1939, No. 20588. Convention date, July 26, 1938. [Class 40 (ii)] In apparatus for reproducing sound from optical films, a shutter 44 is provided and arranged to be driven by a spring or a motor when released by a splice 16, Fig. 2, or the like on the film 10 thereby gradually to interrupt and to restore the beam to prevent noise in the output while the splice is passing the sound gate. As shown, the shutter 44 is driven through gearing 43, 38, friction discs 41, gearing 35, 22, coiled spring 24, and gearing 30, 31 from a motor 33. Normally, the shutter is locked by a pawl 50 and the friction discs 41 slip causing a stress in spring 24. When a splice 16 passes between the sound gate drum 11 and a roller 13 at one end of a lever 55 pivoted at 56, this lever is deflected and its other end 58 bears on a lug 53 on the pawl 50 and turns this pawl away from a notch 47, Fig. 3, in the shutter 44. The shutter, thus released, makes half a revolution and is then stopped by the pawl 50 engaging a second notch 48 in the shutter. During this half rotation, the shutter gradually obturates and re-opens a hole 61 through which the light passes from a source to the film at the sound gate 11.
Patent GB-365107-A (GB)
Title: Improvements in or relating to the simultaneous reproduction of sound in cinematography
Filed: 1930-07-08
Abstract: 365,107. Combined sound and picture films. SOC. FRANCAISE CINECHROMATIQUE (PROC•D—S R. BERTHON), 24, Rue de la Pepiniere, Paris. July 8, 1930, No. 20669. Convention date, July 11, 1929. [Void Published under Sect. 91 of the Acts]. Drawings to Specification. [Class 40 (ii).] A combined sound and kinematograph film having lenticular embossing for colour reproduction has such embossing omitted from the part to receive the sound trace by embossing the film with an engraved cylinder which is left plain in the form of a polished ring at the part corresponding to the sound track. The sound may be recorded in the smooth track either photographically or as on a gramophone disc.
Patent GB-261114-A (GB)
Title: Improvements in block paving for roads and in blocks & slabs therefor
IPC: E01C5/22
Filed: 1925-08-18
Abstract: 261,114. Chappat, O. Aug. 18, 1925. Block paving. - Relates to paving comprising slabs each formed of blocks or setts 1 of stone or wood arranged side by side in a mould and united by binding material such as concrete or pitch 8, and in which the edges of the blocks form the lateral edges of the slab itself. According to the invention, pins 7 embedded in the sides of the slab engage correspondng recesses 9 in adjacent slabs. The slabs are laid in transverse rows so as to break joint and with the pins 7 running transversely or longitudinally of the road.
Patent GB-933061-A (GB)
Title: Improvements relating to beds
Inventor: SECCOMBE JAMES LESLIE
IPC: A47C17/14
Filed: 1959-06-17
Abstract: 933,061. Furniture combinations; divan headboards. SLUMBERLAND Ltd. July 11, 1960 [June 17, 1959], No. 20730/59. Classes 52 (2) and 52 (3). [Also in Group XXV] A divan bed base 10 has spaced holes provided in the side members which may be fitted with bushes 15, and support members 13 to which are attached a headboard, footboard or cupboards 31 are secured to the side members by bolts 14 co-operating with the bushes 15 or by dowel pins or the like. Two divans may be connected by a common headboard. The cupboards &c. are secured to the support members by screws, dowel pins or releasable catches.
Patent GB-504988-A (GB)
Title: Improvements in the cooling of fuel injection nozzles for internal combustion engines
IPC: F02M53/04
Filed: 1938-07-14
Abstract: 504,988. Fuel injectors. BOSCH GES., R. July 14, 1938, No. 20854. Convention date, Dec. 14, 1937. [Class 7 (iii)] The outlet of a fue injector is cooled by circulating a liquic through a jacket 11 preferably made o: pressed metal, which is secured around the fuel outlets 10 by brazing or welding and sealed at its opposite end by a cap nut 13 which secures the nozzle body 3 to a nozzle holder 1. The cooling liquid is admitted to a horseshoe space 15 in the jacket, at the same.level as the valve seat 5, through a port 17 in a bar 16 formed integral with the nozzle body, and is discharged through a pipe 21 opening out of the top of the space 15. Relative roation between the nozzle body and the holder is prevented by a pin (not shown). The jacket may have a shoulder 14 or a conical surface at its upper end engaged by a shoulder or conical surface on the nut 13.
Patent GB-1352252-A (GB)
Title: Production of bituminous mixes
IPC: C08K3/00
Filed: 1971-04-19
Abstract: 1352252 Bituminous mix WIBAU WBSTDEUTSCHE INDUSTREI-UND STRASSENBAU-MASGHINEN-GmbH 19 April 1971 [2 Feb 1970] 20862/71 Heading C3N A method of preparing a bituminous mix with a minera<SP>1</SP> filler having a residual water content is characterized by adding a finely divided water soluble chromium double salt consisting wholly or partially of a chrome alum, e.g. potassium chrome alum to the mineral filler, having a residual water content, in an amount 0À01-0À1% by weight based on the weight of mineral filler before, during or after the addition of the bituminous binder. The chrome alum may be basic and the composition may contain a foam-preventing agent, such as a silicone or a fatty acid, in an amount 0À025- 0-1% by weight based on the weight of the chromites. The chromites suitably have a particle size of less than 1 mm. The residual water content may be 0À1-0À5% by weight. Adhesion between the binding agent and mineral filler is improved as a result of the chromium double salt driving off the water film surrounding the individual grains of filler. The mixture may be heated if required.
Patent GB-849886-A (GB)
Title: "improvements in or relating to potentiometers or variable resistances"
Inventor: THOMAS GWILYM IVOR
IPC: H01C10/32
Filed: 1959-06-18
Abstract: 849,886. Variable resistors. A. B. METAL PRODUCTS Ltd. June 18; 1959, No. 20937/59. Class 37 In a variable resistor the spindle is made entirely from insulating material and is secured to a separately made contact carrier also made of insulating material. As shown, a potentiometer, particularly for AC/DC equipment, comprises a carbon track 5 carried by a support 4 which is held against a metal end plate 2 by two sets of lugs 11a on a cover 11. The sliding contacts 10 are carried by a plastics member 9 which is cemented to a plastic spindle 1. The spindle 1 is located by the member 9 bearing against the back of the cover 11, a lubricating groove 10a being provided.
Patent GB-354845-A (GB)
Title: Improvements in or relating to methods of applying protective coatings to pipes, tubes and the like
IPC: B29C48/151
Filed: 1930-03-17
Abstract: 354,845. Coating pipes &c. in extrusion machines. STANDARD OIL CO. OF CALIFORNIA, 225, Bush Street, San Francisco, U.S.A. March 17, 1930, No. 20973/31. Convention date, Dec. 7, 1929. Divided on 354,803. [Class 87 (ii).] Pipes and the like are coated with bituminous mastic by extruding an annular layer of the mastic all round the pipe and then wrapping the coating with a strip of flexible material to hold it in place. The pipe may be coated initially with a layer of primary material, and both pipe and mastic preferably are heated during the main coating-operation. Mastic of the kind described in Specification 354,803 is specially suitable for use in the present process. In the construction shown in Fig. 2, the pipe 8 is fed longitudinally through the extrusion-apparatus 11, and the coating is wrapped by tape 5 delivered from a power-driven revolving reel 16. In the modified construction shown in Fig. 3, the pipe is rotated in addition to moving axially, and takes up the tape 25 from a stationary reel. The outlet end of the extrusion nozzle is shaped helically so that the wrapping will fit closely against it. Cold bituminous mastics of the emulsion type may be used as the coating material.
Patent GB-669993-A (GB)
Title: Improvements in and relating to lighting fittings
IPC: F21V11/06
Filed: 1948-08-09
Abstract: 669,993. Lighting systems. BENJAMIN ELECTRIC, Ltd. (Benjamin Electric Mfg. Co.). Aug. 9, 1948. No. 20980/48. Class 75(iv). In a lighting installation, light from a plurality of lighting units 1, mounted overhead, is directed downwardly on to a substantially continuous, louvred false ceiling 6 formed by a criss-cross arrangement of horizontally extending translucent strips 7, 8, having light diffusing surfaces. The false ceiling is built up from rectangular louvre sections 6a which rest on frames formed by channel members 9 connected at their ends by corner pieces 12. In the latter, two or more flanged arms are either rigidly disposed at right angles or pivoted to each other and holes are provided for connection to supporting rods 13 depending from the true ceiling. The translucent strips 7, 8 are made of sheet plastic material with roughened surfaces, which are formed either by the extrusion process for making the sheets or by rolling the sheets between rollers having different speeds. The strips have slits extending from one edge to the middle, so that when assembled the lower and top edges of both sets of strips lie in the same two spaced planes. A liquid cement may be applied to the intersections of the strips. The light-transmitting factor of the strips is several times greater than the light-reflecting factor. The width and spacing of the strips are chosen in accordance with the spacing between the lighting units and with the desired cut-off angle. The distance of the upper edges of the strips from the plane of the lighting units is several times greater than the width of the strips. Each lighting unit comprises a reflector 5, and one or more straight fluorescent lamps 4, extending parallel to one set of louvre strips.
Patent GB-210713-A (GB)
Abstract: 210,713. Haddan, A. J. H., (National Cash Register Co.). Oct. 26, 1922. Cash-registers with operating-means and several item-value totalizers; printing totals and subtotals.-A lever-set machine is provided with the known total and sub-total taking mechanism hitherto employed with key-set machines and rendered operative by the differential setting of a total-taking lever. The selection and actuation of the totalizers 231 arranged in three lines are controlled by setting-levers 130 pivoted at 139 and provided with lugs 242 for disconnecting the latches 227 from the driving members 226 operated by the usual Y levers 217 and the cams 213, 214 secured to the main shaft 112. Movement of the setting levers during operation of the machine is prevented by the inward movement of a notched plate 151, which is shifted when shaft 88 is rocked to release the machine and engages a pin 159 on the lever to hold it in its set position. The zero trip pawl 250 is retracted to ineffective position by the setting of the corresponding lever 130 through the medium of a pin 260 on the lever, which pin cams outwardly an arcuate plate 262' suspended by a bell-crank 263 and pivotally connected at 264 with a lever 265 pivoted on an arcuate plate 266 suspended by the other arm of bellcrank 263 and bv an arm 267. The lever 265 is pin-and-slot connected to an arm 269 rigid with arm 267 and the arrangement is such that the pin 260 produces an outward movement of plate 266 parallel to itself and the arm 267, being extended to engage a pin on the trip pawl 250, consequently withdraws this from obstructive position. The total and sub-total taking mechanism is similar to that described in Specification 8119/15. The total lever is movable up or down from normal or adding position to any one of three positions, and the selective mechanism described in Specification 176,781 is employed to prevent movement of the totalizer-control setting levers other than that corresponding with the particular totalizer line concerned in the total-taking.
Patent GB-217800-A (GB)
Title: Improvements in and relating to rotor windings for asynchronous motors without starters
IPC: H02K17/30
Filed: 1923-08-20
Abstract: 217,800. Shenfer, C. Aug. 20, 1923. Addition to 204,532. Alternating-current induction machines.- In an induction-motor rotor winding as claimed in the parent Specification, the part of the winding in each phase which produces the starting current is made one half of the total winding of the phase; also the change-over from starting to running conditions may be effected by making a short-circuit connection between the neutral point of the winding and the member which short-circuits all the phases. Fig. 1 shows a 2-phase winding in which one half of such phase winding, for example the section 2, is in series with the opposing sections 1, 1<1> of another phase for starting. In the running condition, the member 8 short-circuits the two phases at 6 and 7 and an additional connection may be made at 9 to the neutral point 3. The starting may be graded by closing two of the connections before the third. The connection from the neutral point to the short-circuiting member may also be employed with windings, as shown in Fig. 4, in which the proportion of each phase producing the starting current is less than half of the winding. The change from starting to running is made by connecting in a short-circuit member 8, shown in dotted lines, with the result that the portions 6, 7, 9 of the half phases carry heavy currents during running. By means of connections, such as 13, to the neutral point, a better current distribution is obtained. The effects of overloading parts of the winding, such as 6, 7, 9, when running may be overcome by increasing the conductor section in these parts or by making them of two branches in parallel, in which case the turns in the branches are chosen so as to be balanced as to volt phase and magnitude.