baber/WOPTO huggingface dataset:
Patent GB-1074986-A (GB)
Title: Automatic telecommunication exchange with supervisory signalling
IPC: H04Q3/00
Filed: 1965-06-22
Abstract: 1,074,986. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORPORATION. June 22, 1965 [June 25, 1964], No. 26396/65. Heading H4K. Supervisory signalling over an exchange network between calling and called circuits uses alternating current. A single frequency of 25 kc/s. may be used or a code of 2-out-of-5 tones. As shown in Fig. 1, a single tone generator 17 is connected to gates Gg1 to Ggn of a group of calling circuits and is connected by a common wire 18 to detectors D1 to Dn of a group of called circuits. A signal on the M-wire of a calling circuit puts the tone on to a network path, such as 13, to a called circuit. Coincidence in both phase and amplitude of the tone received by way of the network and by way of the common wire 18 causes a normally active gate D in detector D1 of the called circuit to remove inhibition of gate I 1  so as to connect a calling signal on lead E. The gate D is preferably a difference amplifier as described with reference to Fig. 2 (not shown) and comprises two symmetrically arranged transistors. The gate I comprises a transistor normally held conductive by the output of the difference amplifier and putting bias on a Zener diode to hold a second transistor cut off. The second transistor has the coil of a ferreed in its collector circuit which when energized connects the E-wire to signal the calling condition. The gate D may be replaced by a phase-sensitive AND gate followed by an AND gate in place of gate I. Signalling can be conducted in both directions over the same channel if all circuits are provided with detectors D, it being necessary to inhibit the detectors of any circuit while it is occupied with transmission, Fig. 3 (not shown). To employ signalling with 2-out-of-5 tones each calling circuit has 5 M-wires selectively connecting corresponding tone generators to the network path, each generator being connected or on a common wire to corresponding detector circuits serving 5 E-wires at each called circuit, Fig. 4 (not shown).
Patent GB-1434534-A (GB)
Title: Brazing a tubular member into an aperture
IPC: B23K1/00
Filed: 1972-06-06
Abstract: 1434534 Brazing UNITED KINGDOM ATOMIC ENERGY AUTHORITY 23 Aug 1973 [6 June 1972] 26422/72 Heading B3R In making a peripheral joint between a tube 4 and the wall of an aperture in a second member 1, crenellations are formed in the outer surface of the tube by knurling and the rim of the aperture is chamfered, the tube is fitted into the aperture and its knurled region is expanded into contact with the wall of the aperture without completely removing the crenellations, a ring of braze metal is located in the recess and in a vacuum furnace the assembly is heated to effect brazing. In an embodiment a heat exchanger tube plate 1 is provided with a chamfered hole 2, 3 and a tube 4 is provided with its crenellations by running a knurling tool around the tube while the tube is supported on a mandrel. The tube 4 is inserted into the hole so that the crenellations engage the hole and a tube expander lightly expands the tube to substantially close the gaps between the ribs. With a ring of brazing alloy 9, e.g. containing palladium, positioned in the chamfer the assembly is placed in a vacuum furnace; which is flushed with hydrogen, to melt the brazing alloy. A number of tubes may be simultaneously brazed to apertures in a tube plate.
Patent GB-534742-A (GB)
Title: Improvement in luminous door, name or number plates in containers
IPC: F21V9/16
Filed: 1939-09-23
Abstract: 534,742. Luminous signs. NEWTON, B. H., and NEWTON, V. A. Sept. 23, 1939, No. 26475. [Class 39 (i)] [Also in Group XVIII] A luminous door, name or number plate comprises a casing with a transparent removable cover and a number of studs marked with letters &c. in luminous paint and secured to a back plate in the casing by press-buttons or like means. Fig. 1 shows a construction with the transparent cover f sliding in grooves in the walls d of the casing and retained by a hinged portion e. Lugs b with screwholes c permit of securing the casing to the wall &c. The studs h are secured in openings in the rear wall of the casing, or in a removable plate by press-button devices i. The casing may carry an electric bell-push.
Patent GB-1011070-A (GB)
Title: Speed control of induction motors
Inventor: RAWCLIFFE GORDON HINDLE
IPC: H02K17/30
Filed: 1962-07-10
Abstract: 1,011,070. Induction motors; control of A.C. motors. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 2, 1963 [July 10, 1962], No. 26522/62. Headings H2A and H2J. In a squirrel-cage induction motor in which some control of speed is effected by tappings on the stator winding, the stator coils have a pitch of five-sixths pole-pitch to eliminate harmonics, and those coils of each phase which are progressively out out to raise the speed (by increasing the motor flux) are in alternate pole-groups of each phase winding to preserve symmetry. Thus, between taps A 5  and A 4  there is a single coil at one end of one pole group of phase A, and between taps A 4  and A 3  there is a single coil at the corresponding end of the other pole group. Likewise for the other phases. Tap-changing is facilitated by an auxiliary contact a 2  having a resistive connection RA. The tap-change is first made by this resistive connection and followed by the direct connection.
Patent GB-812628-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B15/92
Filed: 1955-09-16
Abstract: 812,628. Knitting-machines. HEMPHILL CO. Sept. 16, 1955 [May 5, 1955], No. 26591/55. Class 74 (2). The fabric issuing from the needles of a circular machine is subjected to a downwardly directed blast of air passing through a tube 7 and directed on to the fabric by a deflector 10 to effect the take down of the fabric. Elements 13 as described in Specification 811,636 may be provided to assist in the take down of the fabric.
Patent GB-628434-A (GB)
Title: Tool for panel-mountings
IPC: E04F21/28
Filed: 1947-10-02
Abstract: 628,434. Glazing windows. BECKETT, LAYCOCK & WATKINSON, Ltd., and PERNETTA, C. Oct. 2, 1947, No. 26610. [Class 20(iii)] [Also in Group XXIII] A tool for inserting a rubber packing- strip of V-shaped cross-section when mounting a glass panel in a channel frame comprises a handle. 22 carrying a cylindrical barrel 23 closed at its rear end by a cap 24 having a central opening 25 and at its front end by a detachable plug 26 provided with a smaller barrel 35 having a rib 36 to locate and guide the strip, an enlargement 38 to spread its limbs apart and a presser piece 39 to apply pressure to the strip and insert one limb into the channel of the frame. The plug 26 secured to the barrel by a pin 28 engaging in a groove 27 is rotatable within the barrel and may be held in any desired position by means of a spring-pressed pin 29 engaging in a series of holes in the groove 27. The end of the barrel 35 is cut away at one side 37 to allow one limb of the packing strip to pass out sideways and a series of lubricating felts 41 soaked in glycerine or other lubricant may be located within the main barrel 23 to lubricate the strip during its passage through the tool.
Patent GB-731452-A (GB)
Title: Improvements in continuous filament spinning machines
Inventor: SCOWCROFT HECTOR
IPC: D01H1/40
Filed: 1952-10-23
Abstract: 731,452. Connecting continuously delivered yarn to winding means ; waste end severing. T.M.M. (RESEARCH), Ltd. Oct. 13, 1953 [Oct. 23, 1952], No. 26615/52. Class 120(2). For starting a fresh bobbin in a ring spinning machine twisting continuously produced filaments of rayon or synthetic fibres, particularly high tenacity yarn, a cutting device is provided to sever the yarn pieced to the bobbin, the cutting device being located close to a plain starting disc rotatable with the spindle. Yarn 26, which it is desired to piece onto the bobbin 18, is threaded through the traveller 12 and passed to a suitable collecting receptacle before being pressed against the starting disc 16, whereupon the yarn is taken up by the bobbin 18 and is drawn into a slot formed by a catch 223 that guides it to a blade 24.
Patent GB-1530993-A (GB)
Title: Translational and angular acceleration measuring apparatu
IPC: G01C19/5783
Filed: 1975-10-15
Abstract: 1530993 Measuring velocity and acceleration SANDERS ASSOCIATES Inc 15 Oct 1975 [29 Nov 1974] 26622/78 Divided out of 1531503 Heading G1K The subject mater is identical to that of Parent Specification, but the claims relate to the arrangement of two linear acceleration transducers 36, 38 on the axis of a spinning body 34, the sensitive axes of the two transducers being parallel to each other but orthoganal to the spin axis of the body 34. The transducer outputs are used to measure translational acceleration in two directions orthogonal to the spin axis and to each other, and angular acceleration about these directions
Patent GB-1310838-A (GB)
Title: Contrast media for radiography
IPC: A61K49/04
Filed: 1970-06-02
Abstract: 1310838 Radiographic composition STERLING DRUG Inc 2 June 1970 [11 June 1969] 26666/70 Heading A5B A process for preparing a radiographic composition for intravascular injection, particularly for visualisation of the cardio-vascular system, comprises heating a mixture of gelatin and a non-toxic polyiodinated benzoic acid compound or a non-toxic salt thereof in aqueous medium, to increase the viscosity of the composition so that, on injection, the composition will form a coating on the walls of a cardiovascular system to be visualised and provide a duration of visualisation of at least 3 seconds while maintaining the viscosity sufficiently low for the composition to pass readily through catheters suitable for intravascular injection.
Patent GB-1262604-A (GB)
Title: Improvements in, or relating to, an apparatus for conveying particulate material
IPC: B65G25/00
Filed: 1970-06-03
Abstract: 1,262,604. Reciprocating conveyers. KOBO KOHLER & BOVENKAMP G.m.b.H. 3 June, 1970 [21 June, 1969], No. 26797/70. Heading B8A. A conveyer for metal swarf comprises a raciprocable tubular rod 1 provided with a barbed entrainment member (not shown in Fig. 1), the rod 1 having a slit 4 whose walls 5 are engageable with replaceable bearing strips 6. A web 3 which carries the strips extends from the floor 2 of a conveyer trough. In a modification, Fig. 3, bearing strips 8 which are mounted on a reciprocable rod 1<SP>1</SP> may extend the length of the rod or they may comprise longitudinally spaced sections. Fig. 6 shows a barbed entrainment member in the form of a wedge-shaped box which surrounds the rod 1<SP>1</SP>. The box is formed by welding together plates 10, 11, 12 and is provided with a spiked entrainment member 14.
Patent GB-172161-A (GB)
Title: Improvements relating to rings for curtains
IPC: A47H13/02
Filed: 1920-09-21
Abstract: 172,161. Smith, M. H. Sept. 21, 1920 Curtains, drawing and suspending.-A curtain-ring comprises a length of wire bent into the form of a circle or rectangle, the ends being bent outwards to form radial stems a and eyes b, which are bent at right-angles to the ring, in opposite directions, and are sewn to the curtain.
Patent GB-1160093-A (GB)
Title: A method for Producing Negative Lead Accumulator Plates
Inventor: KASPAROV YAKOV BOGDANOVICH
IPC: H01M4/62
Filed: 1966-07-16
Abstract: 1,160,093. Lead accumulator negative plates. FILIAL GOSUDARSTVENNOGO SOJUZNOGO NAUCHNO-ISSLEDOVAT ELSKOGO AKKUMULY-ATORNOGO INSTITUTA. 16 July, 1966, No. 26942/66. Heading H1B.  A negative plate for a lead accumulator is made from a dry powder containing lead oxide or lead oxides, an expander including a tanning agent in an amount of 0À4 to 0À75% dry wt., being essentially a condensation product of a phenol and #-naphtholsulphonic acid with formalin, and BaSO 4  in amount of 0À2 to 0À6% dry wt. with respect to the lead oxides. The tanning agent may be used per se or as an aqueous solution, and is the condensation product of the total phenols separated from the liquor of the low-temperature carbonization of brown coal, and a #-naphtholsulphonic acid, with formalin. The tanning agent is added to the lead oxides and BaSO 4 , and the resulting mixture is mixed with H 2 SO 4  to form a paste which is used to fill in the negative grids.
Patent GB-496317-A (GB)
Title: Improvements in and relating to pistons
IPC: F02F3/18
Filed: 1937-10-05
Abstract: 496,317. Pistons. NICOLLE, A. V., and AUTOMOTIVE ENGINEERING CO., Ltd. Oct. 5, 1937, No. 26976. [Class 122 (i)] A thin steel piston is provided with a chamber h adapted to contain cooling medium, e.g. sodium or sodium salt, while the skirt is strengthened in the region of the bosses by a thickening c, or by a ring member carrying the bosses and secured to the skirt. The skirt may be integral with or formed separately from the head. The cooling chamber is formed by an insert i which may be secured at its apex directly to the head or to an insert of light, heat conducting material as described in Specification 493,664.
Patent GB-1345178-A (GB)
Title: Terminal block and terminal connector
IPC: H01R13/115
Filed: 1971-04-19
Abstract: 1345178 Two-part couplings; terminal blocks UNDERWRITERS SAFETY DEVICE CO 19 April 1971 [28 Dec 1970] 27045/71 Heading H2E A terminal block capable of receiving both spade-type contacts and U-shaped contacts is provided with at least two parallel apertures communicating with opposite faces of the block and means provided in the aperture for alignment of the U-shaped contacts. The spade-type contacts comprising at least two laterally spaced coplanar contacts are received by means of a slot interconnecting two apertures and aligned by means of shoulders provided on each contact blade abutting the internal wall between apertures. As shown Fig. 4, the U-shaped contact is provided with ribs S1 S2 on blades 41, 42 which mate with notches 17, 18 provided in the aperture. In Fig. 10, a spade-type contact 60 is provided with blades 61, 62, 63 with shoulders 67 which abut the internal wall between apertures. A plurality of U-shaped contacts may be interconnected by a strip portion extending along the base of the U-section.
Patent GB-1311268-A (GB)
Title: Process for the isolation of n-benzoyl cephalosporin c
IPC: C07D501/12
Filed: 1971-04-19
Abstract: 1311268 N-Benzoyl-cephalosporin C PFIZER Inc 19 April 1971 [26 Jan 1971] 27118/71 Heading C2A Cephalosporin C is recovered from a cephalosporin C-containing fermentation broth by treating the broth with benzoyl chloride at a pH of 7 to 10 and a temperature of 10 to 15‹ C. to form the N-benzoyl derivative of cephalosporin C, and then acidifying to pH 1 to 3 and extracting the derivative by means of a waterimmiscible solvent. The derivative may then be cleaved to 7-aminocephalosporanic acid, e.g. by conversion to the silyl ester with chlorotrimethylsilane, halogenating the ester with PCl 5  in anhydrous pyridine to form the imino-halide, converting the latter to the imino-ether by treatment with an alcohol and then hydrolysing or alcoholysing the imino-ether to give 7-aminocephalosporanic acid. The fermentation broth may be subjected to a preliminary treatment with 50% sulphuric acid to bring the pH to 2À5 followed by standing at 5‹ C. to room temperature to destroy co-produced penicillin N. Suitable water-immiscible extracting solvents are alcohols (e.g. n-butanol, n-amyl alcohol, n-hexanol or benzyl alcohol), esters, water-immiscible ketones and chlorinated hydrocarbons. The extract is purified with charcoal, concentrated and taken up in acetone. The acetone solution is treated with sodium ethyl hexanoate to precipitate the crystalline monosodium salt of N-benzoyl cephalosporin C, from which free N-benzoyl cephalosporin C is obtained by acidification with sulphuric acid. Reference has been directed by the Comptroller to Specification 847,375.
Patent GB-235462-A (GB)
Title: A method of and means for forming butter and like materials into pats, small cakes and the like
IPC: A01J23/00
Filed: 1924-11-14
Abstract: 235,462. Lyons & Co., Ltd., J., and Knibbs, W. G. Nov. 14, 1924. Stream-cutting machines.-Butter is forced through a narrow orifice c by a piston d and is spread into a pat by a stamp e<1> which is then withdrawn. A cutter h then severs the pat which is pushed on to a conveyer i by a reciprocating pusher l.
Patent GB-1096652-A (GB)
Title: Textile bobbin
Inventor: COTTRELL RICHARD RONALD
IPC: B65H75/30
Filed: 1965-06-28
Abstract: 1,096,652. Textile tubes. PATON CALVERT & CO. Ltd. June 22, 1966 [June 28, 1965], No. 27244/65. Heading B8M. A textile tube 11, which may be parallel-sided or tapered, is provided at one end with means, such as a slot 12 for engagement with a driving key on a spindle, a dished member 14 being inserted in the tube and having a central hole for engagement with the driving spindle and the edge being turned up to engage the inside surface of the tube. The tube may be made of spirally or convolutely wound layers of chipboard, the layers being secured by adhesive. The dished member 14 is preferably made of metal. The tube may alternatively be made of aluminium, or both the tube and the dished member may be made of plastics material. The driven end of the tube may be knurled to prevent yarn slippage. The tube may be given a protective coating of plastics material or varnish.
Patent GB-995771-A (GB)
Title: Improvements relating to electrical power control or switching circuits
Inventor: KING KENNETH GORDON
IPC: H03K17/725
Filed: 1962-07-17
Abstract: 995,771. Control and switching systems. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. July 15, 1963 [July 17, 1962], No. 27338/62. Heading H2H. [Also in Division H3] The Specification describes a number of circuits for controlling the power supply to an A.C. load, the common feature of each circuit being a parallel arrangement of a saturable inductance and a controlled rectifier. In Fig. 1 these elements comprise a transformer 7 and a semi-conductor rectifier 5, this circuit acting as a switching system to supply or disconnect a load 8 according to whether the rectifier 5 is continuously non-conducting or conducting. The circuit acts as a regulating system by applying triggering pulses to the rectifier 5 at appropriate instants. When used as a switching system the current limiting inductance 3 is replaced by a capacitor, and rectifier 5 is controlled by a circuit, Fig. 2 (not shown), in such a way as to avoid excessive peak currents at closure. Rectifier 5 may be connected across part or all of the secondary winding 6, and the primary winding 4 may be connected to the A.C. supply through a series-parallel arrangement of a capacitor and inductor, Figs. 3 and 4 (not shown), and may be centre-tapped. Fig. 5 (not shown). Other modifications mentioned are:- (1) Connecting the rectifier across part or all of a secondary winding separate from that supplying the load; (2) Combining the transformer and inductance in a single unit having a high leakage reactance, Fig. 6 (not shown); (3) Replacing the saturable transformer by a saturable inductor; (4) Connecting a current-limiting inductance in series with the rectifier to limit surges when using the circuit as a regulating system.
Patent GB-829763-A (GB)
Title: Derivatives of thiaxanthene
IPC: C07D335/20
Filed: 1956-09-06
Abstract: The invention comprises compounds of the general formula <FORM:0829763/IV (b)/1> (wherein X and X1 each represent a hydrogen or halogen atom or a C1-5 alkyl or alkoxy radical, each R DEG represents a hydrogen atom or an alkyl radical, the R DEG  groups together containing 0-4 carbon atoms, and <FORM:0829763/IV (b)/2> represents a tertiary amino group in which R and R1 are separate or are joined to form a heterocyclic ring with the nitrogen atom, or R1 is joined to any R DEG  group that is not hydrogen to form a heterocyclic ring with the nitrogen atom), and their acid addition salts, and the preparation thereof by reacting a Grignard reagent, prepared from magnesium and a 3-aminopropyl halide of the general formula <FORM:0829763/IV (b)/3> with a thiaxanthone derivative of the general formula <FORM:0829763/IV (b)/4> to form a Grignard adduct, hydrolysing this to a compound of the general formula <FORM:0829763/IV (b)/5> which is then dehydrated, and, if desired, treating the product with an acid to form a salt.  The Grignard reagent, e.g. 3-dimethylaminopropyl magnesium chloride, is preferably prepared in the presence of tetrahydrofuran, but it can also be prepared in the presence of ether or a mixture of ether and benzene provided the aminopropyl halide is added portionwise, the thiaxanthone derivative thereafter also being added portionwise.  The products are useful as therapeutic agents on account of their antiemetic properties.  Specification 829,764 is referred to.
Patent GB-649693-A (GB)
Title: Manufacture of biguanide derivatives
IPC: C07C279/26
Filed: 1948-10-21
Abstract: <FORM:0649693/IV (b)/1> (wherein R and R1 represent hydrogen or alkyl radicals of 1-3 carbon atoms, R11 and R111 represent hydrogen or lower alkyl radicals such that together they contain 2-7 carbon atoms, and of X, Y and Z at least one is Cl, Br or I and the others may be H, Cl, Br, I or alkyl radicals of 1-3 carbon atoms) are manufactured by reacting a guanidine derivative of the formula <FORM:0649693/IV (b)/2> with an O-alkylisourea of the formula <FORM:0649693/IV (b)/3> (wherein Alkyl includes substituted alkyl, e.g. benzyl).  The reaction may be effected by heating the reactants together, conveniently in the presence of a solvent or diluent.  The guanidine may if desired be used in the form of a salt (e.g. hydrochloride or sulphate), the base being liberated in situ by means of a basifying agent (e.g. an alkali metal alkoxide).  In an example, p-chlorophenylguanidine and N-isopropyl-O-methylisourea are refluxed in toluene.
Patent GB-1152487-A (GB)
Title: Adjustable Vibration Isolator
Inventor: YOUNG SHELDON EDWIN
IPC: F16F1/36
Filed: 1966-06-20
Abstract: 1,152,487. Resilient mountings. S. E. YOUNG. 20 June, 1966 [22 June, 1965], No. 27373/66. Heading F2S. An adjustable vibration isolator, particularly for supporting the legs of industrial machinery, comprises a base member 10 which is made, e.g., of neoprene, has, e.g., a serrated under-surface 40, and is provided with a number of flexible grippers 32, a cover-plate 12 with a plurality of downwardly extending fingers 30 which fit tightly into the grippers 32, and a height adjusting mechanism, e.g. a unit 22 and bolt 20. Each gripper 32 consists of a fingerengaging socket 33 which is spaced from a cylindrical opening 36 in the base 10 and which is joined to the latter by means of a folded portion, the grippers protruding upwardly through corresponding openings 34 in a bearing- plate 26. The bolt 14 passes through a hole 20 in a foot 18 of a machine (not shown) for screwthreaded engagement with a threaded hole 16 in the cover-plate 12 and to bear against the bearing-plate 26, the foot being locked at the desired height by means of the lock-nut and washers 22, 24. The grippers can be formed as separate members and inserted into openings in the base member 10 and the bases of the finger engaging-sockets can be secured to the lower ends of the fingers 30 by screws and washers. Alternatively, the finger-engaging sockets can be formed without end closure walls, the sockets being secured to the fingers 30 by means of an adhesive, or by means of a clamping ring. A cap (56), Fig. 7, not shown, may be permanently secured to the end of each finger (30). In a modification, Fig. 8, not shown, the base (10a), preferably made of metal, has annular seats (54) to support the bases (42) of the grippers (32a) springs (52), which are interposed between a bearing-plate (26a) and the base 10(a), having their upper ends received in recesses (60) in the bearing- plate 26(a) and their lower ends bearing upon collars (58) which rest upon the bases (42) of the grippers 32(a). In a further modification, Fig. 9, not shown, height adjustment is accomplished by means of a wedge (66) which is laterally movable, by a nut (78) and screw (76) mechanism, between oppositely inclined surfaces of upper and lower plates (68, 70).