baber/WOPTO huggingface dataset:
Patent GB-405068-A (GB)
Title: An improved method of and mechanism for automatically severing the threads of continuously stitched book-pads in book-stitching machines
IPC: B42B2/02
Filed: 1932-09-26
Abstract: 405,068. Book - stitching machines. POLLAK, J. E., 20, Holborn, London.- (Brehmer, Geb. ; Plagwitz, Leipsic, Germany.) Sept. 26, 1932, No. 26725. Addition to 383,047. [Class 112.] In a book-stitching machine according to the parent Specification, the threads connecting adjacent books are drawn to one side of the needle and the cutting delayed until the stitching of the next book has commenced. The threads are drawn aside by cam-actuated pivoted hooks 17 and subsequently cut on fixed knives 16a by a later movement of the hooks. In a modification the cutting movement is given to the knives instead of the hooks by a second cam-actuated linkage. In a further variation the hooks 35, Fig. 21, have knife edges 37 and are moved laterally. The threads are drawn round the edge 37 on the formation of the next stitch and are cut on the return movement of the hooks.
Patent GB-875728-A (GB)
Title: Improvements relating to the stabilization of organopolysiloxanes
Filed: 1959-08-05
Abstract: The thermal and moisture stability of a siloxane polymerized with an alkali metal compound from a low to a higher molecular weight state, is improved by contacting the siloxane with an ammonium halide.  The process is applicable to siloxane oils, resins and rubbers.  The siloxanes disclosed contain Si-bonded alkyl, cyanoalkyl, alkenyl or aryl radicals.  The stabilization is effected merely by mixing the halide, in solid form or in aqueous or alcoholic solution or solution or suspension in other organic solvents, with the siloxane at a temperature, e.g. within the range of 20 DEG -150 DEG C., the halide preferably being used in amount of 1,5-2 mols per mol of alkali-metal compound in the siloxane.  The examples describe the known hydrolysis and condensation of silanes and subsequent polymerisation of the resulting siloxanes with alkali metal re-arrangement catalysts, the above stabilization thereof, and the vulcanization thereof after the addition of known fillers and curing catalysts.  Gamma-cyanopropyl methyldichlorosilane (Example 5) was made by heating equal molar amounts of methyldichlorosilane and allyl cyanide at 110 DEG C. in the presence of a platinum charcoal catalyst. Specification 772,088 and U.S.A.  Specifications 2,587,636, 2,634,252, 2,634,284 and 2,789,109 are referred to.
Patent GB-388694-A (GB)
Title: Electrical impulse generator
IPC: H02K39/00
Filed: 1932-09-27
Abstract: 388,694. Dynamo-electric machines. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, CALVERLEY, J. E., Crescent - Road, Rowley Park, Stafford, and BALL, R. D., Phoenix Works, Bradford, Yorkshire. Sept. 27, 1932, No. 26815. [Class 35.] Windings; exciting ; pole-pieces.-A polyphase synchronous alternator for generating a peaked voltage wave form is provided with a rotor forming a symmetrical field magnet and a slotted stator carrying windings so arranged that the stator pole span is a considerable multiple of the rotor span or conversely. Fig. 4 shows a rotor 2 with a diametral winding 6 excited bv direct current and a stator 3 with a six-phase winding 1 with the sides of each coil in adjacent slots. Fig. 5 shows a rotor 2 with narrow diametrically opposite poles 5 and a stator 3 with a one-phase winding 1a with a span equal to half the circumference.
Patent GB-987015-A (GB)
Title: Improvements in or relating to epoxide resins, processes for their production and their use
Inventor: ARNISH EDWARD WILLIAMG
IPC: C08G59/02
Filed: 1962-07-12
Abstract: Nitrogen containing epoxide resins are prepared by a process which comprises reacting an epihalohydrin with one or more aromatic amines containing, per molecule, at least two hydrogen atoms attached directly to nitrogen and one or more phenols containing at least two phenolic hydroxyl groups per molecule, and dehydrohalogenating the reaction product with alkali, the quantity of alkali being at least equivalent to the amount of amine used. Small amounts of monofunctional amines and phenols may also be present.  The aromatic amine may be an aminophenol and the phenol may be a Novolak resin. Many reactants are specified. Either of the reaction steps may be performed in a solvent.  The products either alone or in admixture with other epoxy resins may be cured by means of polybasic acids or their anhydrides, polyamines, Lewis acids or their complexes, polyhydric phenols or phenolic Novolak resins.  In a comparative example, the polyhydric phenol is replaced by ethylene glycol, and the curing of the products of the invention is compared with that of a mixture of N,N,N1,N1 - tetrakisglycidyl - 4,41 - diaminodiphenylmethane and bisphenol A diglycidyl ether using methylenedomethylenetetrahydrophthalic anhydride.
Patent GB-1311743-A (GB)
Title: Control circuits
IPC: H02P7/29
Filed: 1970-06-04
Abstract: 1311743 Control of DC motors CLARK EQUIPMENT CO 4 June 1970 [30 June 1969] 26934/70 Heading H2J A diode 40 is placed in series with the armature 10A of a chopper controlled D.C. motor 10 and it is stated that it can serve to pass part of the motor armature current in its reverse biased condition due to its long reverse recovery time. Initially capacitor 37 is charged to the supply voltage, and when SCR, or thyristor, 20 is fired the motor draws current, and the capacitor discharges inducing a negative voltage at C by means of saturable transformer 38, forward biasing 40. As the capacitor discharges further, diode 40 ceases to be forward biased, but continues to pass current due to its recovery time. When transformer 38 is saturated on the negative-going swing of the voltage across 37, SCR 20 is quenched and 40 is again forward biased, since 38 is saturated, subsequently becoming reverse biased as capacitor 37 charges again. Fig. 4 (not shown), displays the voltage waveforms at the points A, B, C, and interval g-h represents the time during which the potential at C is kept low by the diode 40 inconsequence of its reverse recovery time. The voltage at C can thus be kept low at all times. The chopping frequency is adjusted by potentiometer 35, through which capacitor 36 is charged to trigger unijunction transistor 33. In Fig. 2 (not shown) a thyristor controlled quenching circuit is used, and an inductor (99) between the motor field winding and the saturable transformer delays the forward biasing of the diode (90). The saturable transformer 38 is of the square loop core type.
Patent GB-1287857-A (GB)
IPC: H01S3/042
Filed: 1971-04-19
Abstract: 1287857 Lasers UNION CARBIDE CORP 19 April 1971 [17 July 1970] 26962/71 Heading H1C The ends of a laser rod 17 are sealed to a laser head structure 12 by elastomer 0-rings 25 fitted over respective metal end bands 18, 19 opaque to radiation and surrounding the rod, each O- ring being sandwiched against a shoulder 25 of a cylindrical collar 20, sealed to the head structure, by the combination of a threaded locking ring 27 and a tubular spacer 10. The arrangement prevents leakage of a liquid coolant which circulates between inlet and outlet passages 23, 24 through a flow tube 22 surrounding the rod, while the opaque end bands and collars prevent deterioration of the elastomer rings by shielding them from radiation. Opaque end bands may similarly be provided on the flow tube to shield its 0-ring seals. The end bands may be formed by firing a coating of platinum in the initial form of powder, paste, liquid or metallized tape on to the rod, followed by electroless deposition or electroplating of a bulk nickel layer. The laser head structure is formed of two mating portions 10, 11, each portion having recesses 13-16 for supporting the laser rod, the flow tube and a pumping lamp (not shown). The engaged portions together define an internal cavity 12, the surface of which is reflectively coated and conforms to an ellipse in cross-section, the pumping lamp and the laser rod being located at respective foci. In a modification the flow tube is omitted and the cavity wholly filled with coolant. The 0-rings may be formed of rubber, silicon or neoprene.
Patent GB-715256-A (GB)
Title: Improvements in photographic sensitising dyes
IPC: G03C1/12
Filed: 1952-10-28
Abstract: Symmetrical meso-alkyl acyloxy carbocyanine dyes of the general formula:  <FORM:0715256/IV(c)/1> are described wherein R1 represents an alkyl group, (particularly a primary alkyl group of 1 to 4 carbon atoms), R2 represents an alkyl, substituted alkyl or alkylene group (particularly a primary alkyl group of 1 to 4 carbon atoms), D represents an alkyl group such as methyl or ethyl, Q represents O or S, and X\sv represents an anion such as chloride, bromide, iodide, benzenesulphonate, p-toluene sulphonate, methyl sulphate, ethyl sulphate, thiocyanate, perchlorate, acetate or propionate. The R, COO-groups are preferably in the 5 : 51 or 6 : 61 positions.  The dyes may be prepared by condensing a hydroxy cyclammonium quaternary salt of the formula:  <FORM:0715256/IV(c)/2> with an ortho alkyl carboxylic acid ester and an acid anhydride of the formula R1 CO-O-CO R1 wherein the symbols have the meaning given above.  A diluent such as pyridine or an alcohol may be present and also a basic condensing agent such as a trialkylamine.  The ortho-carboxylic acid ester may be represented by the formula D-C(OR\sv) 3 wherein R\sv is an alkyl group such as methyl, ethyl, n-propyl or n-butyl.  The preferred esters are ethyl ortho acetate, and ethyl ortho propionate.  Suitable anhydrides include those of acetic, propionic, n-butyric, iso-butyric and valeric acids.  Alternatively the acyloxy carbocyanine dyes may be prepared by condensing the above hydroxy quaternary salts with the ortho carboxylic acid ester in the presence of a condensing agent followed by acylation of the hydroxy group, or the hydroxy group of the quaternary salt, may first be acylated and then condensed with the ortho ester.  The preparation of the following dyes is described: 5 : 5\sv diacetoxy-3 : 3\sv : 9 trimethyl-thiacarbocyanine iodide and the corresponding 6 : 6\sv diacetoxy compound; 5 : 5\sv diacetoxy 3 : 3\sv diethyl-9-methyl thiacarbocyanine bromide and the corresponding 6 : 6\sv diacetoxy iodide, 5 : 5\sv diacetoxy 3 : 3\sv diethyl-9-methyloxacarbocyanine perchlorate; 5 : 5\sv and 6 : 6\sv dipropionoxy 3 : 3\sv dimethyl 9-ethyl thiacarbocyanine iodides, and 3 : 3\sv : 9-triethyl-6 : 6\sv dipropionxy thiacarbocyanine iodide. Specification 669,174 and U.S.A. Specification 2,541,015 are referred to.
Patent GB-379119-A (GB)
Title: A method of producing a loosely distended mass of fibrous material in the form of a layer
IPC: B68G7/02
Filed: 1931-09-28
Abstract: A fluffy distended fibrous cellulosic sheet material which may contain up to about 50 per cent of hair and may be formed with a paper skin on one or both sides is used for sanitary and surgical purposes.
Patent GB-678069-A (GB)
Title: Improvements relating to belt buckles
IPC: F16G3/00
Filed: 1950-11-06
Abstract: 678,069. Buckles. TRAUTWEIN, W. Nov. 6, 1950 [Nov. 8, 1949], No. 27066/50. Class 43. A buckle frame 1 supports a pivoted clamping member comprising a pivoted leg 6 and a clamping leg 7 connected by a central bridge 8, the legs 6, 7 being capable of resilient deflection to accommodate belts of different' thicknesses. The clamping leg 7 is longitudinally slotted at 9 to increase its resilience, and carries three short belt-engaging legs 10. Stops 12 on the frame 1 prevent movement of the clamping member beyond the clamping position.
Patent GB-1489403-A (GB)
Title: Vibration damping device
IPC: F16F7/08
Filed: 1975-06-09
Abstract: 1489403 Vibration dampers ISOLATED SYSTEMS Ltd 9 June 1975 [19 June 1974] 27101/74 Heading F2S A vibration damper comprises two sleeve members 11, 12 of resilient material in telescopic and frictional engagement and a helical compression spring 20 wedged at each end between deformable walls 21 and the relevant member 11, 12, the spring resisting contraction of the damper. In the embodiments the outer sleeve 11 has converging inner walls to provide increased frictional resistance as the device contracts. In Fig. 3 (not shown) the clamping of the wedging boss (126) is effected by bushes with female threads.
Patent GB-1154614-A (GB)
Title: Heating Kiln with Roller Conveyor.
IPC: F27D99/00
Filed: 1966-06-17
Abstract: 1,154,614. Conveying furnace charges. PULLMAN Inc. 17 June, 1966 [24 June, 1965], No. 27283/66. Heading F4B. In a kiln 10, for firing ceramic ware, having a roller conveyer extending therethrough, each roller 32 passes through apertures 24 in the side-walls 34, 36 of the kiln, each projecting end 38 resting in two driven roller members 42 and each projecting end 40 resting on two idling rollers 54. The shafts 44 of rollers 42 are Journalled within the roll housing 46, and their outer ends carry sprockets 48 engaging an endless chain 50 which is driven by chain reduction through sprockets, 51, 68, and 70 and a chain 72 by a motor 52. A spring biased idler roll 64 may be provided to increase frictional engagement between the rollers 32 and 42. The rollers 32 which are ceramic in the hottest zones but may be metallic in the cooler zones, have spherical bearing surfaces 60, 62 at their ends, which if the rollers are axially displaced rub against retainers 56 and 58. The retainers 56 and 58 are removable to allow broken rolls to be quickly replaced. The kiln chamber is heated by burners in the side walls and baffles are provided at the entrance and exit to reduce heat loss (Fig. 1).
Patent GB-1085014-A (GB)
Title: Improvements in the construction of gaseous lasers
IPC: H01J17/04
Filed: 1964-11-24
Abstract: 1,085,014. Gas lasers. CANADIAN PATENTS & DEVELOPMENT Ltd. Nov. 24, 1964 [Dec. 4, 1963; Aug. 10, 1964], No. 27404/66. Divided out of 1,085,013. Heading H1C. The optical cavity of a He/Ne gas laser is defined by. two spherical concave reflectors 24 each integral with a respective conically tapered plug 33 cemented or fused to a mating conical surface ground in the inner end surface of the tube 34. Shields 36 protect the reflectors from sputtered quartz molecules.
Patent GB-316807-A (GB)
Title: Improvements in centrifugal pumps comprising two or more stages and in multi-stage centrifugal pumps built up of units comprising two or more stages
IPC: F04D1/06
Filed: 1928-09-24
Abstract: 316,807. Mackley, E. N. Sept. 24, 1928. Multi-stage centrifugal pumps; casings.-In a multi-stage centrifugal pump, two impellers e, f, mounted on a shaft a are separated by a partition comprising a stationary drum g bearing against a surface q on the split casing d and having a web h and an integral hub bearing on a liner j on the shaft a. The drum is provided with ports m, n arranged on opposite sides and the ends of the drum constitute bearings for the eyes u of the impellers. One end of the casing may be closed by a detachable end plate w. A similar partition g<1>, h<1>, j<1>, may also be employed to separate a number of two-impeller units forming a multi-stage pump as shown in Fig. 2 wherein two units of the type shown in Fig. 1 are connected either in series or parallel by bolts passing through their end plates x. In this case the ports m, n are omitted. In a modification, the hub and drum portions of the partition may be made of separate parts secured together by bolts.
Patent GB-855560-A (GB)
Title: Improvements in or relating to band pass filters and amplifiers for use on very highfrequencies
IPC: H03H7/01
Filed: 1958-08-27
Abstract: 855,560. Band-pass filters. TELEFUNKEN G.m.b.H. Aug. 27, 1958 [Sept. 24, 1957], No. 27470/58. Class 40(8). A variable band-pass filter, for e.g. the v.f. stage of a television receiver, comprises a pair of capacity-tuned half-wave cavity resonators coupled in such a manner that the pass band is maintained constant over the tuning range. The resonators are in the form of coaxial lines tuned by capacitors C 1 , C 2  and coupled by a conductor K which passes through an insulating sleeve D in the common wall. The coupling conductor is directly connected to the inner conductor of the second resonator and capacitatively coupled by a plate P to the inner conductor of the first. The dimensions of the coupling and the disposition of the plate P are chosen to provide the desired constant band-width. Energy may be coupled to and from the filter by direct connections or by inductive loops. One or both of the inner conductors may incorporate a trimming capacitor Tr 2 .
Patent GB-1513018-A (GB)
Title: Plate cylinder for printing presses
IPC: B41F27/12
Filed: 1975-06-30
Abstract: 1513018 Mounting flexible printing plates ROLAND OFFSETMASCHINENFABRIK FABER & SCHLEICHER AG 30 June 1975 [28 June 1974] 27595/75 Heading B6C A flexible plate clamping device 1, 2 is mounted in the gap 7 of a cylinder 8 and comprises wedge-shaped tension bars 11, 12, and tightening screws 18 which oppose springs 17 to clamp the plate 3 between bar parts 13, 14 and 15, 16, and to tension it in the same operation by movement of tension bars 11, 12. A spreading device (30) Fig. 1 (not shown) is also provided to stretch the plate 3 across the cylinder. A hand lever (40) Fig. 4 (not shown) which engages bars 9, 10 is used to release the plate.
Patent GB-773300-A (GB)
Title: Improvements in or relating to a method and an apparatus for stacking envelopes or the like
IPC: B65H29/14
Filed: 1955-09-28
Abstract: 773,300. Sheet-delivery apparatus. WINKLER, R., 'and DUNNEBIER, K. Sept. 28, 1955 [Oct. 18, 1954], No. 27614/55. Class 100(1) A method for stacking envelopes and the like comprises the steps of advancing the envelopes consecutively at the speed of the machine in a horizontal direction, then moving them at such a reduced speed as to cause them to assume an imbricated relation; thereupon transferring them into an upright position, and finally moving the stack of upright envelopes at a still further reduced speed for delivery in closely packed relation. Apparatus for carrying out the method includes rollers 1, 2 by which envelopes are advanced on to an endless belt 4 co-operating with a cylinder 9 where they are slowed down by a roller 10, adjustable in slots 10<SP>11</SP> so that they are advanced around the cylinder 9 in overlapping relation. A second adjustable roller 6 delivers the sheet vertically between a stop 12 and an abutment 11 so that a stack is formed on a conveyer 14 moving in the direction of the arrow Z over a table 15.
Patent GB-1284635-A (GB)
Title: Preparation of carboxymethyliminodiacetonitrile
Inventor: DANIELS DAVID ARTHUR
IPC: C08G69/10
Filed: 1970-06-08
Abstract: 1284635 N,N-Bis-(cyanomethyl)-glycine WR GRACE & CO 8 June 1970 [26 Aug 1969] 27692/70 Heading C2C N,N-Bis-(cyanomethyl)-glycine is obtained by reacting glycine, formaldehyde and hydrocyanic acid together under acid conditions.
Patent GB-1470548-A (GB)
Title: Polychloroprene latices
IPC: C08J9/30
Filed: 1974-06-21
Abstract: 1470548 Polyisocyanate-modified polychloroprene foams E I DU PONT DE NEMOURS & CO 21 June 1974 [22 June 1973] 27748/74 Heading C3C A process for the preparation of a polychloroprene latex for use in the production of polyisocyanate modified neoprene foams comprises adding to the polychloroprene latex at least 0À5 parts of a nonionic surfactant having a hydrophilic-lipophilic balance of 11-16À5 and 0À5-2À0 parts of an amine of the formula RN(CH 2 CHR<SP>1</SP>OH) 2  wherein R is methyl or ethyl, and R<SP>1</SP> is hydrogen or methyl; and adjusting the pH of the latex from more than 11À5 to 10À0-11À5; all parts being by weight per 100 parts by weight of latex solids. The latex may be a directly polymerized high solids latex. Suitable amines are methyldiethanolamine, ethyldiethanolamine, di - (2 - hydroxypropyl) methylamine and di-(2-hydroxypropyl)ethylamine. A small amount of a secondary amine such as diethanolamine may also be present. Nonionic surfactants that may be used are the condensation products of alkyl phenols, fatty alcohols, vegetable oils, carboxylic acids or carboxylic acid amides with ethylene oxide. In addition to the nonionic surfactant conventional sulphate or sulphonate anionic surfactants may be added prior to foaming. The amine and the non-ionic surfactant are added to the latex before or after frothing but prior to the polyisocyanate addition. The amine and the nonionic surfactant may be added separately or together as a blend. The pH adjustment may be accomplished by adding the necessary acid or by using a chemical compound which generates an acid in situ, e.g. CO 2 . The acid may be added after the addition of the amine or simultaneously with it. It is thus possible to use salts of the amines of the above specified formula, e.g. methyldiethanolammonium chloride or ethyldiethanolammonium chloride. Foaming is accomplished by mechanically frothing the emulsion by whipping with air and adding a gelling agent such as sodium silicofluoride. The polyisocyanate added to modify the chloroprene latex may be 2,4- or 2,6-toluene-diisocyanates, 4,41-methylenebis-(phenyl isocyanate) m-phenyleneisocyanate, polymethylene poly- (phenyl isocyanate), toluenediisocyanate distillation residues, 4,4<SP>1</SP>-methylenebis-(cyclohexyl isocyanate), and decamethylene diisocyanate. In the Examples (1, 2 and 3) a neoprene latex is compounded with sodium lauryl sulphate, an ethylene oxide condensate of octylphenol, a potassium salt of rosin (1, 2), thiocarbanilide (3), N,N - dimethyl - N<SP>1</SP> - ethylthiourea (1, 2), sodium dibutyldithiocarbamate, diethanolamine (3), petrolatum, phenyl #-naphthylamine, zinc oxide, antimony oxide and hydrated aluminium oxide and either methyldiethanolamine and then CO 2  or methyldiethanolamine hydrochloride added thereto, after which the blend is frothed and reacted with polymethylenepolyphenyl isocyanate.
Patent GB-264944-A (GB)
Title: Improved arrangement for removably securing the lids or covers of barrels, casks, drums and the like metal containers
IPC: B65D45/28
Filed: 1925-11-04
Abstract: 264,944. Steel Barrel Co., Ltd., and Stevens, C. H. Nov. 4, 1925. Heads. - An arrangement for removably securing the covers of barrels &c. comprises an annular angle iron 1 on the end of the barrel, a concave lid 7 which rests thereon, and a number of radial clamping arms 5 equidistantly spaced and engaging in a central boss 6. The arms 5 engage at their outer ends with slots 3 or projections on the angle iron 1 and are shaped to rest on the lid 7 at points 9 intermediate between their ends. A bolt 13 passes through the centres of the lid 7 and the boss 6 and is secured by a nut 14. On tightening the nut 14 the outer ends 'of the arms are forced outwards and the lid 7 is forced on its seating. The angle iron 1 may be arranged outside or inside the end of the barrel. Holes are provided in the inner ends of ribs 12 on the arms 5 to facilitate the passage of a small steel ring which prevents them from becoming separated. Grooves are provided on the underside of the boss 6 to accommodate the ribs 12.
Patent GB-388844-A (GB)
Title: Improvements in and relating to portable galvanic batteries
IPC: H01M2/10
Filed: 1931-10-06
Abstract: 388,844. Batteries. FROST, A. E., 38, Arlow Road, Winchmore Hill, and LOVELL, H. H., 20, Scholefield Road, Highgate, both in London. Oct. 6, 1931, No. 27773. [Class 53.] A battery container is provided with a pivoted handle 2 the ends of which are enclosed in housings 4 within the container, the housings being liquidtight to prevent liquid from coming into contact with the ends of the handle and from escaping from the holes in the container in which the handle is pivoted. The housings may be formed separately from the container and cemented or otherwise attached thereto, as shown in Fig. 2, or they may be formed integrally with the container, as shown in Fig. 4, or with a screwed closure 4a, as in Fig. 3. In Fig. 4 the handle 2 is pivoted in a plug 6 secured in the housing 4. Fig. 7 shows a further modification in which the housing is in the form of a tube 4 which surrounds a rod 5 on which the handle 2 is pivoted. The tube 4 is cemented to the inner surfaces of the walls of the container.