baber/WOPTO huggingface dataset:
Patent GB-1297578-A (GB)
IPC: G01R27/26
Filed: 1970-09-04
Abstract: 1297578 Measuring capacity and dissipation factor; electrophysical measurement S A YALOF AND L VAN DOREN 4 Sept 1970 [16 Sept 1969] 42510/70 Headings G1U and G1N The degree of cure of a polyester resin is measured by using a sample of the resin as the dielectric of a capacitor and determining its dissipation factor (1/wCR), this being effected by applying a sine wave from an oscillator 11 and an integrator 13 to the capacitor 17 so formed, amplifying 18 and limiting 21 the output signal, determining the phase of the output signal by coherent detection (with a square wave Q in phase with the sine wave applied to the capacitor 17) and low pass filtering 16, and by means of a tangent function generator 22 producing a signal 23 representative of the required dissipation factor. By coherent detection 14 of the output signal from the capacitor 17 using a square wave P in quadrature with the sine wave applied to the capacitor, a signal 19 whose amplitude represents the capacity of the capacitor 17 is produced, and by including the integrator 13, which introduces an attenuation factor of 1/w, between the oscillator 11 and the capacitor 17, the output signal 19 representing the capacity of the capacitor 17 is independent of frequency, which can therefore be varied so as to produce different dissipation factors.
Patent GB-1301696-A (GB)
IPC: G05B6/02
Filed: 1970-02-23
Abstract: 1301696 Automatic control systems WERKZEUGMASCHINENKOMBINAT "FRITZ  HECKERT" 23 Feb 1970 8583/70 Heading  G3R In a closed loop automatic control system for a variable, the desired value is set by adjusting a signal which is fed back in dependence upon the measured value of the variable and compared with a fixed reference, so that the change in gain in the feedback path compensates for the change in gain of the forward path with change in the magnitude of the variable. Thus the feedback stage comprises an amplifier in parallel with a series chain of resistors which are switchable so as to provide a feedback amplification which is inversely proportional to the desired value, a comparator stage being arranged to establish a difference between the output of the feedback stage and a constant magnitude supplied to another input of the comparator. In Fig.2 an output signal Y of a control amplifier F R  is supplied to a controlled system F S  and signals X therefrom, dependent upon the magnitude of a variable to be maintained at a desired value, are fed back through an amplifier R to one input of a comparator D. Therein the feedback actual value signal, related to the desired value, is compared with a constant magnitude equal to one unit e.g. 1 Volt. The relation of the actual value to the desired value is achieved in that the amplification of the feedback stage is determined by selecting appropriate by-pass resistors for amplifier R, and is inversely proportional to the desired value. When the desired value and actual value coincide a control deviation of zero exists at the input of the control amplifier F R .
Patent GB-1309218-A (GB)
Title: Hydraulically actuated high speed rediprocable plunger pump
IPC: F04B53/12
Filed: 1972-01-20
Abstract: 1309218 Reciprocating pumps TOWLER HYDRAULICS Ltd 20 Jan 1972 2863/72 Addition to 1205981 Heading F1A The pump of the parent Specification is modified by dimensioning the inlet port 12 so that it is in continuous communication with the supply port 11 during reciprocation of the plunger 8.
Patent GB-1310018-A (GB)
Title: Mechanical diggers
IPC: E02F3/407
Filed: 1969-11-21
Abstract: 1310018 Excavator buckets HARRISON McGREGOR & GUEST Ltd 16 Nov 1970 [21 Nov 1969] 57105/69 Heading E1F A mechanical digger includes a boom-mounted bucket pivotable downwards for digging upwards for tipping, and a rigid ejector plate movable relative to the boom and bucket simultaneously, by means actuated by the pivoting of the bucket, from a retracted to an ejecting position and vice versa during a part only of the bucket's pivoting movement. When bucket 11 is pivoted downwards about axis 12 the ejector plate 27, pivotally attached to the bucket by levers 28, is pivoted upwards by the co-action of slots 30 in levers 28 and pin 21 connecting two cranked levers 18 pivotable about axis 12. When plate 27 reaches its fully retracted position in bucket 11 the bucket, plate and cranked levers pivot together. When the pivoting is nearly complete, pin 20, connecting cranked levers 18, abuts the lower surface of boom 10 and ensures that the plate is fully retracted. Upward pivoting of the bucket carries pin 19 connecting the cranked levers to abut the upper surface of boom 10, causing plate 28 to sweep downwards through the bucket with further upward pivoting of the bucket. Spring 31, connected between the bucket and one cranked lever, biases plate 28 upwardly.
Patent GB-1312801-A (GB)
Title: Method and apparatus for fitting a cap onto the bulb of a lamp
IPC: H01J9/28
Filed: 1970-04-24
Abstract: 1312801 Electric incandescent lamps; discharge lamps EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENYTARSASAG 24 April 1970 19879/70 Headings H1D and H1F A method of straightening a lead-in wire 4 of an electric lamp envelope 1 and threading it into a cap 2 comprises the steps of clamping the envelope and the cap in spaced aligned positions, gripping the lead-in wire adjacent to the envelope with a first pair of jaws 6, closing a second pair of jaws 7 around the wire on the opposite side of the first pair of jaws from the envelope, sliding the second pair of jaws along the wire away from the envelope until it leaves the free end of the wire, thereby straightening the wire, moving the envelope and cap towards one another to thread the free end of the wire into the cap, and releasing the first pair of jaws.
Patent GB-1315992-A (GB)
Title: Methods of providing load spreading plugs in hollow members and  joints between such members
IPC: F16B12/40
Filed: 1970-07-06
Abstract: 1315992 Furniture joints BRITISH ALUMINIUM CO Ltd 30 June 1971 [6 July 1970 3 May 1970] 32586/70 Heading A4H A plug is secured in a hollow member such as a tube by cutting the plug substantially diagonally into two wedge components 2A, 2B, Fig. 2, coating the cut faces 4, 5 with a viscous extrudable adhesive such as a two-part epoxy-resin mix, inserting one component 2A, narrow end first, into one end of the tube 7 by a rod 11, abutting the tube end and the rod against a stop 8, inserting the  other component 2B, narrow end first, from the opposite end of the tube by a rod 14 until face 5 rides up face 4 and possibly extends beyond face 4 (see Fig. 3, not shown), this causing the adhesive to be extruded into the space between the wedge components 2A, 2B and the tube walls to make up the difference between the dimensions of the plug and of the tube. The adhesive may be cured at 100-110‹C. In a second embodiment Fig.4 (not shown), the plug is cut exactly diagonally, and the wedge components (2C, 2D) are inserted from opposite ends of the tube, narrow ends first, but both adjacent the same tube wall, and the uncut dry underface (20) of one component (2D) is caused to ride up the cut adhesive coated face (18) of the other component (2C). In a third embodiment Fig. 5 (not shown), the plug is cut into a central component (22) with two sloping wedge faces, and two end wedge components (23, 24). A plug may be secured in the end of a tube Fig. 6 (not shown) by inserting the components (26, 30) from the said end of the tube 7. Two plugged tubes may be secured by a screw (33, Fig. 7, not shown). A mitre or other angular corner joint may be formed from an L-shaped corner stake 43, Fig. 13, which is cut to provide a main wedge component having arms 43A, 43B and two smaller wedge components 49, 50 (see Fig. 9, not shown), the arm 43A and component 50 being inserted into one angularly cut tube 41 and the arm 43B and component 49 being inserted into another angularly cut tube 42, the inside faces 51 and the cut faces of the main component, and the outer uncut faces 54, 52 of the components 49, 50 being coated with adhesive. The plug is formed from a block of e.g. rectangular, triangular or truncated triangular section, and of e.g. pre-shrunk densified wood laminated with resin, plastics, aluminium alloy; the hollow member may comprise aluminium or an alloy thereof, and may be in the form of an open tube or an extruded section with voids.
Patent GB-1318057-A (GB)
Title: Gas appliance
IPC: F16K17/14
Filed: 1970-08-05
Abstract: 1318057 Gas appliance; discharging gas storage containers KONINKLIJKE EMBALLAGE INDUSTRIE VAN LEER NV 5 Aug 1970 37890/70 Headings F4P and F4T To prevent re-filling of a disposable portable liquefied gas container, an adapter 3 is arranged, between the burner 14 and the container 1, to have two non-return valves 5, 6 in series, one preventing inflow of gas to the container and the other preventing outflow from the container. As the part 4 is screwed into the adapter 3 the sharp tool 10 at its end punctures the closure 9 of the container 1, so allowing gas to pass through the bore 11 and the duet 13 past the valve 5 as far as the valve 6. When the burner 14 is screwed into the adapter 3 the valve 6 is opened, since its ball protrudes past its seating, so that gas passes to the burner. Refilling is prevented by the valve 5. The adapter is held in place by the rectangular cap 2. In other embodiments the two non-return valves may be interconnected so that insertion of the burner in place causes puncturing of the container, see Figs. 3-5 (not shown), and instead of using a sharp instrument, part of the container may be weakened by either gluing or soldering a separate piece of metal over a hole, or by prepunching. The connecting-piece may be held in place by a compressed rubber ring instead of a cap.
Patent GB-1320482-A (GB)
Title: Cooling of hot fluid ducts
IPC: F23R3/08
Filed: 1971-01-25
Abstract: 1320482 Gas turbine engine combustion equipment DEFENCE SECRETARY OF STATE FOR 20 Jan 1972 [25 Jan 1971] 3053/71 Heading F1L The invention relates to ducts one surface of which is exposed to a hot fluid and to means for cooling such ducts, the invention being described with reference to combustion equipment of a gas turbine engine. The equipment is of the kind comprising an annular flame tube each wall of which is formed of sections inter-connected by members such as 9. The member comprises an upstream portion 11 and a downstream portion 10 and an intermediate portion 12 of frusto-conical form through which a series of circumferential rows of holes 13 is formed for the passage of cooling air. The diameter of each hole 13 is in the range 0.005 inch to 0.030 inch. The holes in each row are staggered such that holes in any two adjacent rows are spaced equi-distantly. The holes are formed by means of electron beam pulse drilling.
Patent GB-1322090-A (GB)
Title: Cutting apparatus and method of making such tools
IPC: B26F1/44
Filed: 1971-12-31
Abstract: 1322090 Cutting-out tools R SCHUCHARDT and H G SCHUCHARDT 31 Dec 1971 60889/71 Heading B4B A cutting blade 10 for a rotary cutting apparatus for the continuous cutting of blanks from sheet material of, e.g. paper, cardboard comprises an elongate member having a cutting edge 20 and an opposite base surface having curved edges 26 so as to define cavities 28 when the base-surface is brought into contact with a supporting surface 30 of a support member 32, the cavities being adapted to receive cement 34 for securing the cutting blade to the supporting surface. The blade is also provided with an additional groove 22a to accommodate further adhesive; the latter groove may be of substantially V-shape cross-section (Fig. 2, not shown) or of T-shape cross-section (Fig. 3, not shown). Alternatively grooves 36, 36 (Fig. 4, not shown) may be formed in the flanks of the blade. The support member 32 is of transparent plastics material so that it may be laid over a drawing and the blades thereby located in the correct position. In the construction shown in Fig. 7, the blades 60 are secured to separate frames 52, 54, 56 of plastics material, the frames being attached by pieces of adhesive tape 66 to a main transparent support member 49.
Patent GB-1326369-A (GB)
Title: Punches
IPC: B21D28/34
Filed: 1969-12-12
Abstract: 1326369 Punches REDMAN HEENAN INTERNATIONAL Ltd and E F ALLEN 10 Nov 1970 [12 Dec 1969] 60775/69 Heading B3W A punch, for mounting in the C frame of a press, comprises a body 11 with an opening 16, 18, 20 in which a punch bit 12 is inserted, to be retained by a block 13. The block can be pushed out to allow the bit to be replaced by means of an opening 23. A flange (14) (Fig. 1, not shown) adjacent the mounting end of the body 11 is engaged by a stripper spring in use.
Patent GB-1327583-A (GB)
Title: Method of forming sealing gaskets for container closures
IPC: B65D53/00
Filed: 1971-04-19
Abstract: 1327583 Container closures W R GRACE & CO 19 April 1971 [2 April 1970] 15734/70 Heading B8T [Also in Division B5] A container closure of unplasticized p.v.c., polyethylene, polypropylene, polystyrene, phenolformaldehyde resin, urea formaldehyde resin or phenol-urea-formaldehyde resin has a sealing gasket of a vinyl resin formed therein by depositing a charge of the vinyl resin plastisol in the closure, and solidifying the resin by microwave heating. The vinyl resin may be polyvinyl chloride or copolymers of vinyl chloride with vinyl halides, vinyl esters, styrene, or ethylene, or polyvinyl acetate, and may contain a foaming agent. An adhesive may be used in the closure to secure the gasket, but in the case of screw threaded closures this is not necessary. In one embodiment, the closure containing the plastisol charge is used to close a container before hardening of the plastisol, which is then hardened in situ.
Patent GB-1334849-A (GB)
Title: Vehicles transmission control systems
IPC: F16H61/16
Filed: 1971-01-19
Abstract: 1334849 Change-speed control CAV Ltd 19 Jan 1971 [10 Feb 1970] 6244/70 Heading F2D In a motor-vehicle transmission of the kind in which four forward and one reverse planetary gear ratios are selected by fluid-pressurecontrolling solenoids S1 ... S4, SR, energized through a manual selector switch 10, a vehicledriven generator 13 permits energization of each solenoid only if the vehicle speed is below a predetermined value such that excessive engine speed would result from establishing the ratio controlled by that solenoid, the solenoids being energized through the contacts of relays R1, R2, R2, the coil of each of which is in circuit with a transistor T1, T2, T3, triggered in accordance with the speed-responsive voltage of the generator 13. The same generator also prevents energization of the solenoids S3, S4 of the two highest speeds at standstill, and also prevents energization of any solenoid below a predetermined pressure in the fluid system. The solenoids S1 ... SR are connected in common to the negative line of a D.C. power source 10a, and are normally energized through the positively connected wiper contact of the manual selector switch 10. Bases of N-P-N transistors T1, T2, T3 are connected through resistors RT1B &c. to the common negative rail 12 of a rectifier 11 fed by a vehicle-driven alternator 13, and, through resistors RT1A &c. to the free ends of the solenoids S1 &c. Taking, for example, an attempted 4-3 downshift from solenoid S4, which is directly energized, to S3. If vehicle speed is low enough for safe entry into third ratio, the base of the transistor T3 will be sufficiently positive for it to conduct, which energizes a relay R3, closing normally open contacts R3B, so that the solenoid S3 is energized through the manual switch 10. If vehicle speed is too high, the base of the transistor T3 will be sufficiently negative not to conduct, the relay R3 will stay de-energized, contacts R3B open, and further contacts R3A will remain closed, passing selector switch current through a diode D3 to maintain energized the fourth ratio solenoid S4. Hold-on contacts R3C then maintain the relay R3 energized until the selector switch 10 is moved to a different setting. Similar contacts and relays R1, R2 are provided for first and second ratios. The third and fourth ratio selector switch contacts 3, 4 are connected through diodes D4, D5 and a resistor RT4A to the base of a transistor T4 receiving speed-responsive negative voltage 12 through a resistor RT4B. If setting 3 or 4 is selected with the vehicle stationary, the transistor T4 conducts, energizing a relay R4 which opens contacts R4A leading to the selector switch 10 and closes hold-on contacts R4B, permitting a small ineffective current flow through the relay R4. The hold-on circuit is broken by moving the selector switch 10 to 1 or 2 setting. Low pressure in the fluid system closes a switch 14, causing the transistor T4 to conduct and energize the relay R4, thus preventing energization of any of the solenoids S1 ... SR.
Patent GB-1342544-A (GB)
Title: Method of forming glass layers
IPC: C03C4/00
Filed: 1971-10-28
Abstract: 1342544 Depositing a chalcogenide glass STANDARD TELEPHONES & CABLES Ltd 28 Oct 1971 50082/71 Heading C1M A method of depositing on a substrate, such as silicon, a layer of a glass which contains selenium, tellurium and/or sulphur on a substrate in which a plasma is established by means of an applied electric field adjacent said surface in an atmosphere containing a mixture of compounds each including an element of the layer. Preferably the compounds are the hydroxides of each element. The atmosphere may additionally include a doping element and is maintained at a pressure below atmospheric. The electric field is applied by an alternating voltage preferably of radio frequency. Deposition may be controlled by a magnetic field to give even cover or concentrated in particular areas. Specific glasses described are Te 48  As 30  Ge 10  Si 12 ; Te 33  As 27  Ge 20  Si 20  and As 5  Se 6  Te 3 .
Patent GB-1345376-A (GB)
Title: Devices for turning tubular fabrics
IPC: A41D25/00
Filed: 1971-10-19
Abstract: 1345376 Turning inside out ANDREW BARON Ltd 6 Sept 1972 [19 Oct 1971] 48636/71 Heading D1X Apparatus for turning ties inside out comprises a first frame 12 securable to a table 14 and through which pass a pair of vertical guide rods 11, a vertical open ended cylinder 25 and a parallel pneumatic or hydraulic cylinder 17, having a piston rod 23 secured to a second frame 24 which is slidable on the guide rods' 11 and has secured thereto a vertical rod or tube 26 which on retraction of the piston rod 23 enters and passes through the cylinder 25 to turn inside out a tie placed over the cylinder.
Patent GB-1345525-A (GB)
Title: Substituted pyridones and process for their preparation
IPC: C09B29/42
Filed: 1971-09-17
Abstract: 1345525 Pyridones and their preparation IMPERIAL CHEMICAL INDUSTRIES Ltd 17 Sept 1971 [12 Oct 1970] 48302/70 Heading C2C Pyridones of the formula wherein Z represents H or -CONH 2 , X represents a C 1-4  alkyl group or a group of the formula wherein R is a C 1-4  alkyl or alkoxy group, Y represents a C 1-4  alkyl group, a group of Formula (II) wherein R represents a C 1-4  alkoxy group, a group of the formula or a group of the formula wherein R is a C 1-4  alkyl or alkoxy group, at least one of X and Y having a sulphonated benzene nucleus present, may be obtained by heating a compound of the formula wherein X<SP>1</SP> represents a C 1-4  alkyl group, or a C 1-4  alkyl. or alkoxyphenyl group and Y<SP>1</SP> represents a C 1-4  alkyl group, the benzyl radical, or a C 1-4  alkoxyphenyl or C 1-4  alkyl- or alkoxybenzyl radical, provided that at least one of X<SP>1</SP> and Y<SP>1</SP> contains a benzene nucleus, in a sulphuric acid medium whereby sulphonation of a benzene nucleus in X<SP>1</SP> and Y<SP>1</SP> takes place and the -CN group is converted to H or CONH 2 . For the manufacture of the amido-substituted derivatives 94-97% H 2 SO 4  is preferably used and the mixture heated at 50-60‹ C.; for the manufacture of the 3-unsubstituted compounds it is preferred to use 70-95% H 2 SO 4  and to heat the mixture at 100-130‹ C.
Patent GB-1348909-A (GB)
Title: Photographic compositions and materials
IPC: G03C7/392
Filed: 1971-10-21
Abstract: 1348909 Colour photographic material  KODAK Ltd 19 Oct 1972 [21 Oct 1971] 48994/71 Heading G2C  Colour photographic material comprises a support bearing in order (a) a photo-sensitive silver halide emulsion layer containing a colour coupler and (b) a gelatine layer containing a dispersion of a stabilizer for the dye image and residual couplers which is N, N'-phthaloyl-di- (2-methylpiperidine) and may be present in a concentration of 20-200 mg/sq ft. The stabilizer improves stability to light and reduces production of yellow stain.
Patent GB-1350305-A (GB)
Title: Loading apparatus
IPC: F02B1/04
Filed: 1971-10-21
Abstract: 1350305 Hoppers/mobile luffing arm apparatus BOOKERS AGRICULTURAL HOLDINGS Ltd 17 Oct 1972 [21 Oct 1971] 49044/71 Headings B8S and B8H [Also in Division B2] A hopper 15 is pivoted to a jib 8 pivoted to a boom 1 connected to a tractor 7 for pivoting about a vertical axis and supported by a frame 2 carrying wheels 3, the jib 8 being lowered to facilitate filling of the hopper 15 and being raised to enable the hopper to be emptied, and pivoting of the hopper ensuring that the orientation of the hopper is maintained during raising and lowering of the jib 8. Controls 21 on a pillar 4, carrying a ball-and-socket joint connecting the boom 1 to the tractor, control rams 10 and 17 for operating the jib 8 and opening the outlet of the hopper. A toothed arm 11 is connected to the jib 8 and passes through a guide 12 on the frame 2 provided with a ratchet for holding the jib 8 in its raised position. A cable 13 is connected to a lever 14 for disengaging the ratchet from the toothed arm 11.
Patent GB-1351699-A (GB)
Title: Tunnelling machines
IPC: E21D9/12
Filed: 1971-09-23
Abstract: 1351699 Endless conveyers SUMMA CORP 23 Sept 1971 44469/71 Heading B8A [Also in Division E1] In a tunnelling machine spoil is transported away from the tunnelling head of the machine by conveying means that extends through and forms one side of a conduit by which dust is removed from about the head. In a preferred construction the conduit is formed by U- sectioned troughing 51, 52, 53 and an endless conveyer 50. The flanged, upright side walls of the troughing carry flexible flaps 54 sealing down against the upper, roller-supported run of the endless belting of a conveyer having a lower run located within the troughing. The rollers 60 are so spaced that natural sag of the belt between the rollers is such as to create small gaps between the belt and the flaps so that dust formed from the spoil as it is conveyed by the belt is drawn through the gaps into the conduit for subsequent extraction together with existing dust in the air stream through the conduit by a dust separator at the rear of the conduit.
Patent IL-104286-A (IL)
Title: Process for the preparation of microcapsules using a surfactant which is a salt of a partical ester of a styrene-maleic anhydride polymer
IPC: A01N43/653
Filed: 1992-12-31
Abstract: This invention relates to a process for encapsulation and particularly for the preparation of microcapsules having a capsule wall of a solid polymeric substance enclosing a water-immiscible material, which process comprises preparing a solution of a first reactive component required to form the capsule wall in the water-immiscible material, then dispersing the mixture in an aqueous medium containing a surfactant which is a salt of a partial ester of a styrene-maleic anhydride copolymer, to form an oil-in-water emulsion, and subsequently adding a second reactive component required to form the capsule wall which is complementary to the first one and reacts with it under the mixing conditions, whereby a solid polymeric wall is formed about the dispersed water-immiscible material. The resulting stable aqueous suspension of microcapsules can either be used directly or after dilution with water, or the microcapsules can be separated from the aqueous phase.