baber/WOPTO huggingface dataset:
Patent GB-1485563-A (GB)
Title: Drive control circuitry for electrical motors
IPC: H02P25/06
Filed: 1974-12-24
Abstract: 1485563 Automatic positioning control FUJITSU Ltd 24 Dec 1974 [28 Dec 1973] 55753/74 Heading 63N A magnetic head in a magnetic disc pack store is positioned by an electric actuator whose movement is controlled by a control system including means for providing an actual speed of movement signal and an actual position signal from which is derived a first desired speed signal and a second greater desired speed signal. The actuator energization is controlled in accordance with a comparison of the actual position signal with the first reference signal when it is smaller than the first reference and with the second reference signal when it is greater than the first reference the speed of the actuator being increased when the actual speed signal is smaller than the first reference signal. In the overall system, Figure 5, a function generator 4 responds to an instruction from the central processor CPU and to the fed back position signal from detector 2 to provide a speed reference signal to summation device 5. The function generator 4 includes a counter for determining digitally from the position signal the distance to go and after conversion to analogue form this signal is applied as Ei, Figure 7, to the input of the function generator circuit 12 which provides an output E o  which corresponds to #x and is the value of the first reference signal which is applied to comparator C 1 . A multiplier A 2  is used to produce the second reference signal k#x which is applied to the second comparator C 2 . The actuator described employs a 'moving coil loud-speaker' movement and coil L is connected to detector circuit 15 which produces a signal V o  corresponding to the actual speed of movement. When V o <E o  comparator C 1  is operative to compare the speed with the first reference signal to produce an error signal for power amplifier 6 to control the energization of the motor which is connected in a transistor bridge circuit. When V o >E o  comparator C 1  produces a signal to operate switch SW which energizes an opposite pair of transistors in the bridge circuit and also allows motor energization to respond to the actual speed signal and the second reference signal.
Patent GB-1172817-A (GB)
Title: A Device for Producing Fine Ice by Freezing Liquids.
IPC: A23G9/18
Filed: 1966-12-20
Abstract: 1,172,817. Ice making. MAJA-MASCHINENFABRIK HERMANN SCHILL K.G. 20 Dec., 1966 [10 Jan., 1966], No. 56857/66. Heading F4H. In an apparatus for producing frozen aqueous liquids of the type in which a cooled rotatable drum is partially immersed in the liquid and ice is removed from the drum surface by a scraper, the drum is cooled by a single helical refrigerant duct arranged adjacent the drum surface and extending over the full length of the drum. The use of a single duct results in a temperature gradient along the surface of the drum which results in a tendency for the ice layer to crack, thereby facilitating its removal by the scraper. The duct may be of circular section and have an external layer of solder forming the drum surface. The duct may be embedded in a layer of copper which forms the drum surface. The drum surface may be formed of a cylindrical silver or copper sheet to the inside of which is applied a channelled metal sheet, the channels and the cylindrical sheet co-operating to form the duct. The drum surface may be formed by a rectangular section duct whose turns are separated by solder layers. The duct may be located outside a thermally insulating hollow cylinder. The apparatus may be controlled by varying the depth of immersion of the drum in the liquid, the speed of drum rotation, and the flow rate and temperature of the refrigerant.
Patent GB-1215017-A (GB)
Title: Mower blade
IPC: A01D34/73
Filed: 1967-12-15
Abstract: 1,215,017. Mower blade. DAYCO CORP. 15 Dec., 1967 [24 March, 1967], No. 57008/67. Addition to 1,198,518 Heading A1F. A central mounting portion 13 is embedded in the blade 11 and is made of a material (e.g. plastics or steel) more rigid than the flexible elastomeric material used for the ends containing the cutting edges 15. The blade is mounted on the mower shaft at the central aperture 16 formed in portion 13.
Patent GB-1449872-A (GB)
Title: Cooler tower
IPC: F28C1/04
Filed: 1973-12-10
Abstract: 1449872 Cooling towers CARL MUNTERS AB 10 Dec 1973 57030/73 Heading F4K In a cross-flow cooling tower comprising a rectangular casing 10, two contact bodies 32 and a fan 24, the contact bodies 32 are located within slidable boxes 40 which are displaceable within openings 42 in associated longitudinal walls of the casing 10 between a 'stowed' or 'transportation' position, see dotted lines 40<SP>1</SP>, in which they are disposed inside the casing 10 and an operational position, as shown, in which they are located outside the casing 10. Air enters the tower through grated screens 20. Water is supplied to troughs 14 located inside the sliding boxes 40 from stationary distributer tubes 16; outwardly bent flanges 44 on the boxes 40 form stops. Each contact body is built up of one or more fill units each composed of corrugated layers or sheets, e.g. of cellulose, asbestos or plastic material.
Patent GB-1287639-A (GB)
Title: Production of fibre-reinforced resinous articles
Inventor: ALLARD PIERRE
IPC: B29C70/88
Filed: 1969-11-24
Abstract: 1287639 Laminates SOC RHODIACETA 24 Nov 1969 [25 Nov 1968] 57471/69 Heading B5N [Also in Divisions D1 and H1] A fibre-reinforced resinous article is produced by forming an assembly comprising one or more layers comprising mechanically-strong and heatstable multi-filament reinforcing yarns in association with yarns of a heat-stable resin containing a volatile solvent in an amount such that the resin solvent composition becomes liquid at an elevated temperature, and heating the assembly to a temperature at which the resin-solvent composition first becomes liquid and then resolidifies as the solvent evaporates. The heatstable resins or yarns are such that they do not undergo significant decomposition when heated almost indefinitely at 200 C. nor during heating for at least a few seconds at 500 C. The reinforcing yarns may be indefinite length or relatively short length and may be in the form of woven, non-woven or knitted fabrics. The reinforcing layer may contain electrically conductive fibres, e.g. copper wire. The reinforcing yarns may be of quartz, metal, glass, boron, carbon, aromatic polyamide, polyimide, polyamide-imide or pyrolysed acrylic fibres. Suitable heat-stable resins are aromatic polyamides, polyimides and polyamide-imides. The heating may be effected under pressure. The heat-stable resin may contain 0À5-50% by weight of the solvent. Unstretched yarns produced by dry extrusion spinning of a resin solution with partial removal of the solvent, e.g. N-methyl-pyrrolidone-2, may be used, layers of woven, knitted or non-woven fabric of yarns made from the heatstable resin compositions being stacked alternately with the layers of reinforcing yarns to form the assembly which is hot-pressed so that the yarns made from the heat-stable polymer composition pass through a transient liquid state and the liquid mass travels across the interstices of the reinforcing fabric and hardens as the residual solvent is removed. Alternatively yarn made from the solvent containing heat-stable resin composition may be associated in a single fabric with the heat-stable mechanically-strong yarn forming the reinforcing layer, e.g. by wrapping or twisting the yarns about one another and then weaving or knitting the resulting yarn or by simple juxtaposition by alternating the yarns when weaving or knitting, stacking the resulting fabrics and subjecting the assembly to heat and pressure. The fibres reinforced articles may be used in the production of rocket cones, radomes and solenoids.
Patent GB-1327878-A (GB)
Title: Switch for operating the direction indic.for a vehicle
IPC: B60Q1/42
Filed: 1971-12-13
Abstract: 1327878 Direction indicator switches for roadvehicles FRANZ KIRSTEN ELEKTROTECHNISCHE SPEZIALFABRIK 13 Dec 1971 [19 July 1971] 57830/71 Heading G4Q A vehicle direction-indicator switch comprises a manually-operable lever 6 with an automatic return actuated during return rotation of the vehicle steering wheel, the return mechanism comprising a release element 5 displaceable by a cam 20 of the steering wheel, the element 5 being guided by means of a stud 8 thereon riding in a slot 9 in a guide fork member 12 which is loaded to a normal position by a spring 10 so that the member 12 is capable of displacement when the release element is cammed but the lever 6 is held in. one of its non-neutral positions by an external influence. The lever 6, which has to be moved to a switching position 6<SP>1</SP> (Fig. 4) prior to indication movement, comprises a central portion 16 to which the lever arm is pivoted. The central portion 16 is enclosed, on one side by a contact carrier 3, and on the other side by a casing 4 from which the release element projects. The portion 16 has at its upper end an aperture providing a profiled edge 17 against which the stud 18 of the release element 5 is urged by tension springs 19. The edge 17 has a central region which, in the neutral position of lever 6, maintains the stud 18 and hence element 5 in a retracted position so as not to project for interference by cam 20. In either indication position of lever 6, the cam 20 can displace the element 5 which is extended by the springs 19 due to the cut-away form of edge 17. When displaced by the cam, the lower lever arm part of element 5 swings against a die edge formation on central portion 16 to return the latter and lever 6 to the neutral position. In the event, however, that external influence is being exerted on lever 6 to maintain it in the selected indication position, the cam force on element 5 exerts lateral loading on the guide fork member 12 whose extension 14 permits displacement of the member 12 to allow the cam 20 to pass over element 5 (Fig. 3).
Patent GB-1162808-A (GB)
Title: Benzoates of Basic Dyes
Inventor: ANDREE FRANZ
IPC: C07D209/14
Filed: 1966-12-29
Abstract: 1,162,808. Benzoates of basic dyes; inks. BADISCHE ANILIN- & SODA-FABRIK A.G. 29 Dec., 1966 [30 Dec., 1965], No. 58121/66. Headings C4A and C4P. The invention comprises benzoates of basic dyes of the diphenyl or triphenyl methane, xanthene, monoxazine and heterocyclic methine series, wherein the benzoate radical is derived from a benzoic acid of the formula wherein X represents H, halogen, amino, OH, OCH 3 , alkyl, C 6 H 5 CO, CH 3 CO or an esterified carboxylic group and Y represents H, Cl, amino or OH; which are soluble in alcohols but practically insoluble in water. They may be obtained by reacting a salt of a basic dye with a salt of a benzoic acid of the above formula or by reacting a free dye base with a free benzoic acid of the above formula. Examples are given for the production of the compounds. Printing inks and ball point pen inks are obtained from the above dye salts. In Example (7) a flexographic printing ink is obtained by dissolving a dye in alcohol, ethyl cellosolve and shellac, and (8), (9) a glycol printing ink and a ball point pen ink are obtained by dissolving dyes in a phthalic acid hexanetriol ester and diethylene glycol.
Patent GB-1167190-A (GB)
Title: Improvements in and relating to a Sheet Fed Rotary Offset Printing Machine.
IPC: B41F21/10
Filed: 1966-12-29
Abstract: 1,167,190. Printing presses. RICOH K.K. 29 Dec., 1966 [30 Dec., 1965; 17 June, 1966], No. 58244/66. Heading B6C. A sheet-fed rotary offset press is controlled by a hand-operated lever 6 which is movable from an " off " position " S " into five further predetermined positions " A," " B," " C," " D " and " E." In position " A " the inking apparatus operates to transfer ink to the forme roller, whilst in position " B " the plate cylinder is inked by the forme roller. Position " C " allows " proofing " by the pressa single copy only as the lever 6 is released after being moved to position " C " and a plurality of copies if the lever is manually held in that position. After proofing the lever is automatically returned to position " B." Continuous printing takes place in position " D " and in position " E " the blanket of the offset cylinder is cleaned. A roller 130, Figs. 2, 6, supplies damping water from a readily removable fountain 169a to the inking train of rollers which includes forme roller 149. In the operation of the press should no copy sheet be fed from the sheet stack 98 a detector ensures that the blanket cylinder 3 is automatically tripped away from the impression cylinder 4. As shown in Fig. 13, a flexible printing plate 223 is held around the printing cylinder 2 by automatically operated spring-loaded clamping plate 212 and finger plate 214. Fig. 23 shows the blanket cleaning assembly operated when the lever 6 is moved to position " E."
Patent GB-1324950-A (GB)
Title: Manufacturing percussive photoflash lamps
IPC: C25F5/00
Filed: 1971-12-17
Abstract: 1324950 Coated wire GTE SYLVANIA Inc 17 Dec 1971 [17 Dec 1970] 58789/71 Addition to 1268326 Heading B2E [Also in Divisions C7 and G2]  An anvil wire for the primer of a percussive flash-bulb is provided with a coating of fulminating material intermediate its ends by a process which includes the steps of applying to the wire a coating of fulminating material which extends part way along the wire from one end, drying the coating, dipping a predetermined length of the coated end of the wire into an electrolytic bath containing a colloidal thixotropic agent, and removing the unwanted immersed end portion of the coating by electrolysis. The fulminating material may consist of a mixture of red phosphorus, potassium chlorate or sodium chlorate, and powdered zirconium, and the bath is composed basically of water which contains a salt such as potassium chlorate, potassium chloride or sodium sulphate, an alkaline cleaner such as ammonium bicarbonate or trisodium phosphate, a wetting agent, an anti-foaming agent, and the colloidal thixotropic agent which may be colloidal silicon dioxide, aluminium oxide or, preferably, magnesium montmorillonite. The thixotropic agent may comprise between 0.1% and 10% by weight of the bath. The bath is maintained at a temperature of 50‹C, and A.C. or D.C. may be used.
Patent GB-1412029-A (GB)
Title: Computer
IPC: G06Q10/00
Filed: 1973-12-19
Abstract: 1412029 Computer INTERNATIONAL BUSINESS MACHINES CORP 19 Dec 1973 [13 Feb 1973] 58875/73 Heading G4A A computer for analysing an electrical network comprised of circuit elements connected between nodes performs the steps of: (1) loading into a store a digital representation of the electrical network, multiple performance functions and associated design parameters; (2) generating a matrix structure that represents a set of simultaneous equations consisting of node equations, performance function equations and parameter equations; (3) storing the matrix structure in the store; (4) solving the set of simultaneous equations by an iterative process; (5) computing a weighting vector in accordance with the results of the solution of the set of simultaneous equations; (6) generating the set of adjoint equations from the solution of the set of simultaneous equations; and (7) solving the set of adjoint equations by using the weighting vector to obtain sensitivity values for the performance functions. If the performance functions are not satisfactorily optimized steps 3-7 are repeated. As described, initially input data is entered (block 10, Fig. 1) and from it tables and arrays are set up (block 12) and indices and pointers are generated for a matrix representation MAT of the circuit equations represented by input data. An efficient pivoting sequence is then determined (block 16) using the Hellerman algorithm to re-order the matrix MAT and after determining whether D.C. or transient analysis is to be performed (block 18) node equations, performance function equations and parameter equations are generated (block 22) in the form of matrices B, H containing respectively derivations of network functions with respect to design parameters and partial derivatives of performance functions with respect to network variables, for solution by Gaussian elimination (or by using the Crout algorithm) (block 28). If there is convergence (block 30) in the case of D.C. analysis, and if the design constraints are satisfied the process is terminated. Otherwise a sensitivity sub-routine is entered to determine a weighting factor Z (block 50), to form the matrices B, H and to solve the adjoint equations to update the parameters using the Fletcher algorithm. The process is then repeated from block 18. If D.C. analysis is not being effected and the final time t f  has not been reached, the process is repeated from block 22 with t updated. If there is no convergence the Newton Ralphson algorithm is carried out (block 34) to determine the next increment in the variables before branching back to step 22.
Patent GB-1419206-A (GB)
Title: Method of producing metal films on glass and vitreous silica
IPC: C03C17/10
Filed: 1973-12-20
Abstract: 1419206 Plating glass and silica substrates; electro-plating PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 20 Dec 1973 [27 Dec 1972] 59061/73 Headings C7B and C7F] Glass or silica substrates are roughened mechanically to have an average surface roughness of 0.2 to 2.5 Ám, etched in HF, provided with metal nuclei of e.g. Cu, Ag, Au, Pd, Pt, Hg and then plated with e.g. Ni or Cu. A photo-sensitive layer may be applied before the metal nuclei to provide a metal layer in the form of a pattern. Stannous chloride may be applied before the metal nuclei. A copper plating bath may comprise (moles) 0.028 copper sulphate pentahydrate, 0.030 e.d.t.a., 0.10 NaOH, 0.13 formaldehyde and 1g. of polyethylene glycol. A Ni bath may be (g./l.) 30 NiCl 2 , 10 NaH 2 PO 2 , 10.5 citric acid, NaOH to pH 4.5. A farther Cu layer may be electro-plated using a 0.75 mol. copper sulphate, 0.75 mol. H 2 SO 4  bath.
Patent GB-1219348-A (GB)
Title: Improvements in hermetic refrigerant motor compressor unit
IPC: H02K3/30
Filed: 1968-12-13
Abstract: 1,219,348. Reciprocating compressors. GENERAL ELECTRIC CO. Dec. 13, 1968 [Dec. 20, 1967], No. 59357/68. Heading F1N. [Also in Divisions F4 and H2] A hermetically sealed refrigerant motor compressor unit contains dichlorodifluoromethane as refrigerant and has motor windings of aluminium wire insulated by a heat hardened phenol, formaldehyde modified polyvinyl formae resin, the unit also containing a zinc dialkyldithiophosphate in an amount sufficient to inhibit degradation of the insulation by the refrigerant. The unit has a sump for lubricant to which the zinc dialkyldithiophosphate is added in the proportions of 0À1 to 3% by weight. The alkyl radicals may be the same or different and each contain from six to eight carbon atoms.
Patent GB-1300053-A (GB)
Title: Improvements in or relating to drum filters
Inventor: ANGELINETTA DENIS
IPC: B01D33/00
Filed: 1968-12-17
Abstract: 1300053 Rotary drum filter GLENFIELD & KENNEDY Ltd 11 Dec 1969 [17 Dec 1968] 59827/68 Heading BID An outward-flow filtering drum has a periphery formed by a series of flat panels removably mounted on a framework to present a series of annular channels or one or more helical channels of V-section (Figs. 1, 2, not shown). The framework comprises at least one pair of rings 12 connected by axial spacer rods 13 (Figs. 6, 7, not shown), carrying supports (4) which are secured to the rings 12 or to lugs 13A on the rods. Each support comprises two mutually inclined four-sided rectangular frames 5, having a common radially outer side at the apex 5B, and a pair of members 6 each defining a base and two upstanding sides of a matching rectangular frame and secured to a respective frame 5. Grooves 4A and 4B are defined between frame 5 and frames 6 and accommodate two respective filtering panels 2 of perforate metal or wire mesh, which are retained in place by a clip 9 and screws 10. The gaps between circumferentially adjacent supports are filled by impervious triangular pieces (3) (Fig. 4, not shown). A drum may comprise several axially abutting ring assemblies as in Fig. 6, and between their adjacent rings 12 and also secured to the endmost rings 12 of the drum are support rings 17 which engage support rollers (18) for the drum. Additional upper rollers may prevent the drum from lifting. Between the two central ring assemblies or at one end of the drum are secured two gear rings (14) spaced by pins (14A) to form a composite gear wheel for rotating the drum by motor (16) (Figs. 3, 10, not shown). Spray nozzles (20, 21) wash filter cake from the drum into a trough (22) counterblanaced on a central shaft of the drum, and ultra-violet lamps (23) shine on the drum periphery to kill germs. Fig. 5 (not shown) illustrates a sliding seal at the drum ends. The helical drum construction would use helices instead of rings 12, and its rotation helps to distribute liquid entering the drum at one or both ends along the drum axis. The panels 2 are shown as rectangular to give a drum of polygonal section, but arcuate panels could be used to give a truly circular periphery.
Patent GB-1276718-A (GB)
Title: Improvements relating to analysis of strain in loaded components
Inventor: HEMPSON JOHN GEORGE GODFREY
IPC: G01B7/24
Filed: 1969-12-10
Abstract: 1276718 Measuring stress electrically RICARDO & CO ENGS (1927) Ltd 19 April 1971 [10 Dec 1969] 60273/69 Heading G1N The stresses in a loaded mechanical component are determined by measuring the strains in a rubber model of the component, using a variable inductance fixed to the component at the desired locations, the relationship between the stresses in the model and the actual component being dependent on their relative physical characteristics. The transducer 30, Fig.2, comprises a solenoid coil 31 and coaxial ferrite rod core 33, each mounted on a pin 32, 34 located a fixed distance apart. For testing a connecting rod for a V8 piston engine, a rubber model 10, Fig.1, is assembled round a roller 11 mounted on a board 12 and representing the big end. The small end is loaded through a proof ring 14A by a screw 16 acting on a block 15 attached to this end of the connecting rod. Additional loading by screw 25 is applied to secondary bearing 20 at an adjustable angle. Transducers 30 are attached to the rubber model at desired test locations, and the change in inductance, preferably converted by a tuned circuit to a change in frequency, is proportional to the local strain and stress. The model may be made of different grades of rubber to simulate a composite component of different materials.
Patent GB-1340686-A (GB)
Title: Method of automatic vertical arc welding
IPC: B23K9/02
Filed: 1970-12-23
Abstract: 1340686 Welding by fusion KOBE STEEL Ltd 23 Dec 1970 [27 Dec 1969 10 Feb 1970] 61024/70 Heading B3R In vertical butt, or, in particular, fillet arc welding using a consumable electrode wire, wherein the electrode wire is transversely oscillated as it moves along the weld line, penetration at the centre of the bead is improved by increasing the wire feed rate as the wire passes through the centre of the oscillation width. As shown in Fig. 1A, during the wire oscillation from point a to point c the feed rate is increased from V 1  to V 1 <SP>1</SP> before reaching the centre point b and reduced from V 1 <SP>1</SP> to V 1  shortly after passing b, feed rate increase occurring in the same manner during the oscillation from point c to point a. The increase in feed rate may be simultaneously accompanied by a current increase, to allow for the increased feed rate and thereby prevent dropping of molten metal. This increase in current may, alternatively, be arranged to lag slightly behind the feed rate increase, as shown by I 2 -I 2 <SP>1</SP> following V 2 -V 2 <SP>1</SP> in Fig. 1B, to prevent short-circuiting in the event of excessive feed rate increase. Further to the increased feed rate and current, bead shape may be further improved by slowing or stopping the oscillation for a short period at both ends and near the centre of the oscillation width. Means for changing feed rate may include mechanically advancing and retracting the torch fulcrum.