baber/WOPTO huggingface dataset:
Patent GB-734276-A (GB)
Title: Process for the production of methylene-bis-chloropropionamides
IPC: C07C233/00
Filed: 1952-05-15
Abstract: The invention comprises derivatives and homologues of methylene-bis-chloropropionamide of the general formula <FORM:0734276/IV (b)/1> or <FORM:0734276/IV (b)/2> or <FORM:0734276/IV (b)/3> in which R1 represents H or CH3, R represents Cl or CH3, R11 is CH3 and n is at least 3.  The compounds are prepared by heating a mixture of formaldehyde or acetaldehyde, hydrogen chloride, and a - or b -chloracrylonitrile, a - or b -methacrylonitrile or a homologue of acrylonitrile of general formula CH2=CH-(CH2)n-2-CN at normal pressure to a temperature of 200-400 DEG C. in the presence of steam, an inert gas, and a catalyst consisting of aluminium oxide, a mixture of aluminium oxide and boron phosphate, aluminium chloride or an inert substance having a large surface area such as clay fragments.  Preferably the inert gas is nitrogen.  It is preferred to heat the nitrile in the presence of a substance or substances which volatilizes and forms hydrogen chloride and formaldehyde, e.g. monochloroacetic acid which on heating decomposes to form formaldehyde, hydrogen chloride and carbon monoxide.  In the examples (a) a -chloracrylonitrile is heated with aqueous formaldehyde and hydrogen chloride in an atmosphere of nitrogen in the presence of boron phosphate and aluminium oxide to give methylene-bis-alpha-beta-dichloropropionamide, <FORM:0734276/IV (b)/4> (b) allyl cyanide is heated with aqueous formaldehyde and hydrogen chloride in an atmosphere of nitrogen and in the presence of boron phosphate and silica gel to give methylene-bis-gamma-chlorobutyric acid amide, Cl(CH2)3CONHCH2NHCO(CH2)3Cl; and (c) a -chloracrylonitrile is heated with aqueous acetaldehyde and hydrogen chloride in an atmosphere of nitrogen and in the presence of boron phosphate and silica gel to give ethylidine-bis-alpha-beta-dichloropropionamide, <FORM:0734276/IV (b)/5> The product may further be heated with gaseous ammonia to form the mono or diamine or with an alkali metal cyanide to form the corresponding dinitrile.
Patent GB-627646-A (GB)
Title: Improvements relating to apparatus for operating devices having a negative resistance characteristic from an alternating electric current supply circuit
IPC: G05F1/32
Filed: 1947-05-08
Abstract: 627,646. Protective arrangements ; control systems for arcs. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and WALKER, A. H. B. May 8, 1947, No. 12496. [Class 38 (iv)] In a system in which a D.C. or an A.C. are, fed from an A.C. source, is controlled by saturable reactors, the reactor control current is automatically reduced when the arc voltage falls below a predetermined value, thus limiting the arc current. The voltage across the D.C. arc A, Fig. 1, is applied via rectifier R2 to the D.C. control circuit of the reactors XI, X2, so that when the arc voltage falls below the control voltage, current flows from the control circuit into the arc circuit, thereby reducing the reactor control current due to the voltage drop in the regulating resistor 5. In a modification, Fig. 3 (not shown), the D.C. arc is fed from a three-phase rectifier which is supplied from a single-phase supply by a phase converter and transformer. The reactors are in parallel in one line of the input. In a further modification, Fig. 4, the voltage across an A.C. arc A is rectified by R3 and connected via rectifier R2 to the control circuit. A fall in the arc voltage allows rectifier R2 to pass current through a resistance 6 and so reduce the reactor control current. A three-phase arc, Fig. 5 (not shown), may be similarly controlled.
Patent GB-414849-A (GB)
Title: Improvements in and relating to electric welding apparatus
IPC: B23K9/133
Filed: 1933-04-29
Abstract: 414,849. Heating by electricity. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of MacRae, M. L. ; 1102, Eastern Avenue, Schenectady, New York, U.S.A.) April 29, 1933, No. 12526. Convention date, April 30, 1932. [Class 39 (iii).] An electric welding-apparatus comprises a conical feed roll for the weld rod, with means for relative adjustment of the weld rod and the feed roll. A rod 14 is fed between driven and idle conical feed rolls 18, 19 being guided by members 58, 16. The roll 18 is driven from a motor 28 through sprocket gearing 51, and three-speed reduction gear 39-44 controlled by shifting gears 40, 42, 44 by a sleeve 47 and yoke 381 to one of three positions determined by a lever 45 engaging slots 46. The roll is driven in either direction from oppositely rotating worms 26, 27 and a clutch member 29. A spring 33 holds the member normally in engagement with worm wheel 25, but is raised into engagement with wheel 24 by a relay 32 responsive to a characteristic of the welding circuit. Alternatively, a variable-speed motor may be employed directly responsive to the welding circuit. The frame supporting the rolls and driving mechanism carries studs 70, 71 engaging slots 72 in the plate 63 supporting the guides 58, 16, and is movable to vary the point of engagement of the rod 14 with the surface of the roll to vary the speed of feed. The lower guide 16 is movable in a limited direction towards the work against the action of a spring 60. The rod 14 engages rollers 64 in the guide 16 frictionally, and depresses the guide against the spring when the rod is fed toward the work. When moved away from the work, the guide is again raised, which ensures that if a short length only is engaged by the rolls 64 while a new rod is engaged by the feed rolls, the end will follow the movement imparted to the new rod in either direction. Two pairs of feed rolls may be used for the same purpose. Current is supplied through a sleeve 68.
Patent GB-543027-A (GB)
Title: Lubrication system for sewing machines
IPC: D05B71/00
Filed: 1940-08-05
Abstract: 543,027. Sewing machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Aug. 5, 1940, No. 12575. Drawings to Specification. [Class 112] The lubricating passages of a sewing-machine are supplied with oil from a reservoir by a pump which may be hand-operated or hand-controlled or be automatically put into operation at the completion of a pre-determined number of stitches. In a machine as described in Specification 540,812, the main oil channels are axial bores in the upper and lower shafts and there are separate delivery pipes from the pump to these channels. A ball-bearing supporting the needle-bar end of the upper shaft is lubricated by a rotating lipped disc. The disc receives oil from a port in the shaft and the lip throws it into the ball race.
Patent GB-558833-A (GB)
Title: Improvements in or relating to apparatus for measuring the phase angle between two alternating waves
IPC: G01R25/00
Filed: 1942-09-07
Abstract: 558,833. Phase-difference measurements. SPERRY GYROSCOPE CO., Inc. Sept. 7, 1942, No. 12590. Convention date, Feb. 13. [Class 37] An apparatus for measuring the phase-angle between two alternating quantities comprises amplifiers for separately amplifying each of the waves, and limiter means for limiting the amplified waves so as to produce substantially square waves of equal amplitude, the algebraic sum of said waves being then extracted and fed to metering means whereby the phase-angle is directly indicated. The two waves are fed at 9, 9' and 11, 11<SP>1</SP> into two similar channels, each comprising an adjustable potentiometer 12, amplifiers 1, 3 and limiters 2, 4, 5, for producing the square waves, and a so-called sum tube 29, the outputs of the two sum tubes 29, 29' being fed to a resistance 30<SP>1</SP> in which the algebraic sum of the two square waves of equal amplitude is derived. The resultant wave is converted to direct current, which is linear in phase-angle, by means of a resistor 34 and diode 36, the plate of which is connected through an averaging resistor 35 and condenser 44 to one grid of a twin triode push-pull d.c. amplifier 37, the other grid of which is connected to the cathode of 36. The plates of triode 37 are connected across a potentiometer 38, the voltage of which is applied to a milliameter 8. The theory of the arrangement is given, Figs. 2-6 (not shown). To calibrate the meter 8, each channel is fed in turn (with the other short-circuited), with a test voltage of suitable frequency and potentiometer 28 adjusted to produce half-scale deflection (90 degrees). The same voltage is then applied simultaneously to both channels to produce full-. scale deflection (180 degrees). The voltage on one channel is then reversed in phase to produce zero deflection, and other points can be filled in on the linear scale.
Patent GB-1532397-A (GB)
Title: Goods-handling apparatus
IPC: B66F9/07
Filed: 1977-03-25
Abstract: 1532397 Storage and retrieval installations BYGG-OCH TRANSPORTEKONOMI (BT) AB 25 March 1977 [25 March 1976] 12623/77 Heading B8W Goods 6 and load pallets 7 can be transferred to a conveyer 8 by means of a vehicle 1 which straddles the conveyer 8 and is provided with a gantry 3 along which is movable a lifting device 4 from which a transfer arm 5 depends, the latter comprising two pairs of forks 5<SP>1</SP>, 5<SP>11</SP> for engagement respectively with the goods and load pallets.
Patent GB-708781-A (GB)
Title: Improvements relating to upholstery spring assemblies
IPC: A47C23/053
Filed: 1952-05-19
Abstract: 708,781. Spring upholstery. WALTERS, V. G. K., and HOLLEY, E. C., [trading as HELIX SPRING CO.]. May 14, 1953 [May 19, 1952], No. 12634/52. Class 52(4) Tie-wires 10 for the overlapped end turns of upholstery springs in an assembly are formed at intervals with double helical turns which encircle the overlapping parts of the springs when the tie-wires are rotated into engagement therewith. The ends 24 of the 'tie-wires may then be bent or secured to prevent reverse rotation.
Patent GB-1355251-A (GB)
Title: Production of pnpase
IPC: C12P19/34
Filed: 1971-05-03
Abstract: 1355251 Isolating polynucleotide phosphorylase MERCK & CO Inc 3 May 1971 [1 Oct 1970] 12648/71 Heading C3H A method of separating polynucleotide phosphorylase (PNPase) from an aqueous solution comprises adding to the solution a volume of a C 1 -C 6  alkanol equal to 30% to 80% by volume of the solution. Ethanol in a volume of 40% of that of the solution is preferred. The PNPase may be prepared by fermentation of Micrococcusluteus (otherwise known as M. lysodeikticus), suspending the cell paste in aqueous saline, subjecting the suspension to mechanical homogenization or lysis with lysozyme, salting out unwanted proteins with ammonium sulphate and centrifuging to remove these along with cell debris, and precipitating the PNPase from the supernatant as above.
Patent GB-347478-A (GB)
Title: Improvements relating to the vulcanisation of rubber
IPC: C08J3/24
Filed: 1930-04-24
Abstract: Indiarubber is vulcanized by being immersed in a mould in a bath of glycerine of a grade having a flash point not lower than 384 DEG  F., and heating said bath to a vulcanizing temperature from 270 DEG  F. upwards, but never higher than within 50 DEG  F. of the flash point of the glycerine.  A preferred method of carrying the invention into effect consists in vulcanizing indiarubber hose by extruding the hose into and with a lead sheathing, winding the sheathed hose on a drum, filling the hose with water and immersing the drum in a bath of electrically heated glycerine. Specification 12418/89, [Class 70, Indiarubber &c.], is referred to.
Patent GB-652399-A (GB)
Title: Improvements in or relating to thermionic tube circuit arrangements
Inventor: OBERMAN ROELOF MAARTEN MARIE
IPC: H04Q1/18
Filed: 1948-05-07
Abstract: 652,399. Electrical measuring bridges. STAATSBEDRIJF DER POSTERIJEN TELEGRAFIE EN TELEFONIE. May 7, 1948, No. 12659. Convention date, May 8, 1947. [Class 37] [Also in Group XL (c)] A circuit adapted to respond to the condition of balance of a D.C. Wheatstone bridge comprises an input valve having two electrodes which change their potentials in opposite directions in response to an input voltage applied to the control grid and a second valve, the control grid of which is connected via similarly poled rectifiers to tappings on two potentiometers which connect respectively the two electrodes of the input valve to a potential source to which the cathode of the second valve is also connected. In this way when the input voltage changes from one limiting valve to the other the condition of conductivity of the second valve which has a current responsive means in its output circuit is first reversed under the control of one of the potentiometers and then resumes its original condition when the condition of conductivity of the rectifiers is reversed under the control of the other potentiometer. Fig. 1 shows a circuit in which input signals from across the galvanometer arm of a D.C. Wheatstone bridge are applied to the control grid of valve B1 via rectifier G1. The anode R2, R3 are connected to the potential sources V2, V1 via potentiometers R4, R5 and R7, R6 respectively. When a large negative voltage is applied to valve B1 so that it is cut-off, the values of the potentiometers are such that point Y is negative and point X positive with respect to the cathode of valve B2, rectifier G3 is conducting, valve B2 is cut-off and the relay T is released. As the negative input voltage applied to valve B1 decreases so that the valve becomes conducting the voltage at point Y becomes less negative, valve B2 conducts and relay T operates until point X becomes negative with respect to the cathode of valve B2 when rectifier G2 conducts, valve B2 is cut-off and relay T is released. The anode current of valves B1 and B2 thus change with respect to input voltage at terminals A, B, as shown in Fig, 1a. The characteristic curve of valve B2 may be inverted, Fig. 1b (not shown), by the rectifiers G2. reversing the direction of conduction of G3. The out-of-phase voltages from valve B1 may be derived from the anode and dynode electrodes of a secondary emission valve, Fig. 2 (not shown).
Patent GB-1427284-A (GB)
Title: Vacuum assembly nest for bushings
IPC: B25B27/28
Filed: 1974-03-21
Abstract: 1427284 Assembling resilient bushes GENERAL TIRE & RUBBER CO 21 March 1974 [4 May 1973] 12708/74 Heading F2S A method of assembling elastomeric inserts 10 between inner 22, and outer 20, sleeve, employs apparatus which comprises:-(a) a base member 34 including means 32 of locating the inner sleeve 22, and an outer wall member 34 extending from the base member and adapted to locate the outer sleeve 20, and (b) means of applying a vacuum to the enclosed space formed by the base member 34, the sleeves 20, 22 and a face of the insert 10. The apparatus may include a mandrel 50 with a taper 52 for guiding the bore 19 of the insert 10, an outer member 44 with a funnel 46 for guiding the outside diameter of the insert 10 and a member 60 by which a downward load may be applied to the insert. Lubricant may be applied to the bore of the outer sleeve 20 or to the outside diameter of the insert 10. A vacuum of at least 20 inches of mercury is quoted.
Patent GB-840415-A (GB)
Title: Process of making silanes
IPC: C08G77/26
Filed: 1958-04-22
Abstract: Hydrocarbon groups are introduced into cyanoalkyl-silanes containing silicon-bonded hydrolysable radicals by reacting the silanes with a hydrocarbon magnesium halide in the presence of a tertiary amine. The silane staring materials may have the general formula XaRbSi(R1CN)4-a-b, where X is halogen, acy-oxy, alkoxy or aroxy, and a is 1, 2 or 3, R is a monovalent hydrocarbon radical, and b is 0, 1 or 2, R1 is an alkylene radical, and a+b is 1, 2 or 3.  Suitable amines are trialkyl, triaryl and alkaryl amines, heterocyclic amines such as pyridine, quinoline, N-ethylmorpholine and N-substituted piperidines, and diamines such as N,N,N1,N1-tetramethylethylene-diamine.  It is preferred that equimolar amounts of silane, Grignard reagent and amine be used but the amounts may vary.  A solvent, particularly diethyl ether, is preferably employed, and the temperature may range up to its boiling-point.  The products may be converted to polysiloxanes, e.g. methyl-beta-cyanoethyldichlorosilane may be hydrolysed together with dimethyldichloro-, methyltrichloro- or trimethylchloro-silane.  In the examples: (1) methyl magnesium bromide is reacted with beta-cyanoethyltrichlorosilane in the presence of pyridine to give a mixture of methyl - beta - cyanoethyldichlorosilane, dimethyl - beta - cyanoethylchlorosilane and tri-methyl - beta - cyanoethylsilane, which are converted to the corresponding ethoxy derivatives by refluxing with ethanol and pyridine in benzene; (2) the same materials are used as in (1) giving methyl-beta-cyanoethyldichlorosilane.  The cyanoalkylsilane starting materials may be prepared by (1) reacting acrylonitrile or alkylsubstituted acrylonitrile with a silane containing silicon-bonded hydrogen and halogen in the presence of a tertiary alkyl amine; (2) reacting a cyanoalkene with a silane containing siliconbonded hydrogen and halogen in the presence of a peroxide catalyst.
Patent GB-1493301-A (GB)
Title: Automatic vehicle brake control
IPC: B60W30/18
Filed: 1975-03-27
Abstract: 1493301 Change-speed control EATON CORP 27 March 1975 [2 April 1974] 12809/75 Heading F2D Movement of a transmission shift valve to reverse the direction of motion of a vehicle, e.g. a lift truck or a shovel loader, provides a signal which actuates a spool valve to cause application of the vehicle brakes before engagement of the clutch to establish the reversed direction, the spool having a portion coacting with passageways including a variable restrictor to control its speed of movement. As shown, a spool 38 is centralized by springs 80 when the shift valve 26 is in its neutral position whereby forward and reverse clutches 12, 14 are both vented through ports 46, 48, and a conduit 30, 78 between an engine-driven pump 18 and the vehicle brake system 17 is vented through a groove 74 in the spool. Actuation of the valve 26 to establish, say, forward drive connects a conduit 36 with a conduit 28 from the pump, and vents a conduit 34 through a passageway 33, causing rightward movement of the spool 38 to interrupt the venting of the conduit 30, 78 so that pressure acts through an adjustable needle valve 81 on a piston 86 to apply the brakes. A relief valve 82 limits the pressure applied to the braking system. When a plunger 100 formed on the end of the spool 38 enters a bore 54 the speed of the spool is controlled by an adjustable needle valve 58. On completion of the stroke of the spool, the brakes are released by venting of the conduit 30, 78 through a groove 102, the clutch 12 is engaged by pressure from the conduit 36, and the clutch 14 remains vented through the port 48. A similar sequence occurs on selection of the reverse clutch 14. During a direct change from one clutch to the other the spool 38 passes through its mid position at such speed that the brakes are not released by the groove 74. In a modification the groove 74 is omitted so that the brakes are applied when neutral is selected.
Patent GB-267754-A (GB)
Title: Improvements in or relating to coal cutting machines
IPC: E21C35/04
Filed: 1926-05-19
Abstract: 267,754. Diamond Coal-Cutter Co., Ltd., and Lithgoe, J. May 19, 1926. Coal-cutting machines. - In a coal-cutting machine of the type described in Specification 221,066 in which a rotary power-driven cutter bar with a longitudinal feeding motion is arranged to be slued about a transverse or vertical axis, the power drive effecting both the forward and return operation of the cutter bar, a spring controlled friction clutch is provided between the motor and the cutter or between the motor and slicing mechanism, or both, to permit yield under resistance. In Fig. 1, the motor shaft A carries a splined cone a co-operating with an internallyconed pinion B through which the cutter bar is driven, a spring C acting between the pinion B and a nut E and a locking washer e and nut c' being provided. In Fig. 2, a driven worm-wheel F is loosely mounted on a crank shaft J which actuates ratchet mechanism for sluing the cutter bar; the wheel F is internally coned and cooperates with a coned-member G mounted on a square part of the shaft J, a spring g<1> acting between the member G and lock nuts j<2>.
Patent GB-1089133-A (GB)
Title: Improvements relating to textile drafting apparatus
Inventor: MACKIE JOHN KAY PRINGLE
IPC: D01H5/26
Filed: 1964-03-26
Abstract: 1,089,133. Drafting - apparatus. JAMES MACKIE & SONS Ltd. March 23, 1965 [March 26, 1964], No. 12876/64. Heading D1D. In drafting-apparatus where the fibres are controlled by an apron and a co-operating pressure-device, the upper runs of the aprons of a number of adjacent working positions are supported by a common plate extending laterally between adjacent stands of the apparatus and extending forwardly to a point near the front roller, the plate 'being so mounted that the edge near the front roller is capable of limited upward movement when a lap forms around the front roller. The apparatus comprises a number of plates 4,4', Fig. 3, each of which supports a number of aprons 1. The apron roller is in coupled sections, each of which corresponds in length so a plate. Where each two plates meet, the apron roller is supported in a stand 21 by bearings 20 held by a cap bracket 23 secured by a bolt 24. Above the meeting portions of adjacent plates is a rubber pad 31, Fig. 1, held by an extension 25 of bracket 23, which, when the bolt 24 is tightened, clamps the plates against a bearing surface 30 extending from the stand, and to which the plates are anchored by studs 33, 34. The latter fits closely within a hole in one of the plates, and the former projects into a slot 35 in the adjacent plate. The plates are therefore able to rise on the studs against the pressure of the pad 31, when a lap occurs on roller 3. The arrangement also allows a plate and the corresponding roll section to be removed to replace a faulty apron. The cooperating upper pressure device may be another apron of which the fibre-engaging rund has a support plate 7 similar to plate 4 with an upturned extension loaded by a spring 9. The front edge of the lower plate may carry a small roller.
Patent GB-417774-A (GB)
Title: Improvements in the manufacture of raceway members for roller bearings
IPC: B21K1/04
Filed: 1934-04-30
Abstract: 417,774. Making bearings. SKERRETT, H. N., 24, Temple Row, Birmingham.-(Timken Roller Bearing Co. ; Denber Avenue, Canton, Ohio, U.S.A.) April 30, 1934, No. 12932. Drawings to Specification. [Classes 83 (ii) and 83 (iv).] Working at specified temperatures.-Annular raceway members for roller bearings are formed by bending one or more flat strips into a ring and welding the ends together, heating the ring to a temperature high enough to refine the structure of the weld but insufficient to cause scaling, planing off the flash at the weld while the ring is still heated and then die-forming the heated ring into a raceway member. The strip used is flat sectioned and either a single strip or two or more arcuate strips may be used to form the ring. The single strip may be wound into a helix and then be cut to form a series of one-piece rings. After welding, the ring is heated to between 1000‹ F. and 1450‹ F. to refine the weld and then the flash planed off the heated ring, first in a direction axial of the ring and then in plane thereof. The ring is again heated to about 1450‹ F. and inserted in a coining die to be converted into a raceway. Specification 412,868 is referred to.
Patent GB-1046032-A (GB)
Title: Improvements in or relating to connectors for electric conductors
Inventor: LEITCH IAN HARRISON
IPC: H01R4/62
Filed: 1962-04-04
Abstract: 1,046,032. Cable and wire couplings. BOWTHORPE ELECTRIC CO. Ltd. March 27, 1963 [April 4, 1962], No. 12938/62. Heading H2E. The tapping connector described in Specification 832,279 is modified in that the two conductor - receiving passages 17, 18 formed in the metal connector body are not separated, but open into one another along their lengths to form one passage of figure-of-eight cross-section, so that the two conductors are forced directly into contact on crimping.