baber/WOPTO huggingface dataset:
Patent GB-560114-A (GB)
Title: An automatic machine for operating on workpieces
IPC: B23Q7/00
Filed: 1942-08-11
Abstract: 560,114. Endless -belt conveyers. BOGNER, P. Aug. 11, 1942, Nos. 11247. and 11248. [Class 78 (i)] [Also in Group XXII] In an automatic machine for operating on workpieces, these are carried' by holders 16, Fig. 2, on a flexible conveyer 13 which is led successively into engagement with tool-carrying supports 40, or with members 12 connected thereto, so that a workpiece and tool support travel together and during this period the tool is caused to act on the workpiece. If the tool supports rotate the conveyer 13 may be arranged to pass around them or their attached wheels 12 as shown in Fig. 1, but if a longer period is required for the tool to operate, the tool holders may also be carried by conveyers 36, Fig. 4, the length of which is proportional to time required by any particular tool to complete its operation. The conveyers 36 travel over wheels 38 and the conveyer 13 is guided around the conveyers 36 and over wheels 37. The work-holders 16, Fig. 2, are magnetic chucks rotably mounted in a link 50 of the conveyer 13, this link having jaws 44 adapted to engage a guide 46. A can lid 15 held by the chuck is, during its travel adjacent the tool holder 17, held firmly by a spring- pressed pin 31 moved up by a slide 19, roller 20, and fixed cam 21 and is then operated on by a cutter 18 driven by an electric motor and raised by a spring s, when a roller 30, on the lever 24 which carries it passes into a recess of a cam 23 carried by the slide 19. Stops 34 limit the depth of cut. The machine can be used for making closures for cans embodying a rip-wire, cartridge cases and bomb casings and the tool may perform a working movement instead of merely a feed relative to the work and may operate repeatedly as in the case of a hammer. Specifications 497,785, 505,454, 527,010, 527,072, and 528,120, [all in Group XXII], are referred to.
Patent GB-1042612-A (GB)
Title: Improvements in or relating to articles of boron-containing steels
IPC: C22C38/00
Filed: 1963-03-21
Abstract: A steel melt containing 0.001-0.03% B and 0.001-0.03% N is formed into an article which is then carburized and heat treated to give a casehardened article.  In examples the steel is carburized at 930 DEG C. in an atmosphere of 50% N2 20% H2CO the remainder CH4 and CO2, oil quenched and annealed at 180 DEG C.
Patent GB-331012-A (GB)
Title: Improvements in and relating to cinematograph projectors
IPC: G03B21/32
Filed: 1929-04-11
Abstract: 331,012. MacDonald, A. E., and Blunt &. McCormack, Ltd. April 11, 1929. Kinematograph apparatus.-In a projector, the film is fed continuously by sprockets 59, 11, 12, and a jockey pulley 37 carried by a spring-loaded spindle 38, or the equivalent, co-operates with a gate adapted to clamp the film periodically under spring action and to be opened by positive means such as a cam, to produce the intermittent film movement. The movement of the pulley is limited by an adjustable stop in the form of a strap 40 secured at one end and connected at its other end to a drum 41. Alternatively, the take-up sprocket may be connected to its shaft by a spiral spring. The gate construction is shown in Fig. 5 and comprises a plate 17 having slotted lugs 18 through which passes a, lever 25 pivoted at. 26 and acted on by a light, adjustable spring 28, Fig. 2, to press the plate against the fixed part 15 of the gate. Clamping pressure. on the film is obtained by a strong spring 31 acting on a second lever 30 having a lost-motion connection with the lever 25, and is relieved intermittently by a cam 33 acting on the lever 30 through the rod 34 to allow the film movement, to take place. The invention is described as embodied in apparatus for continuously or repeatedly exhibiting a film from a coil 4, Fig. 1, mounted on an annular rotating table, as described in Specification 331.180. The projector is mounted so as to lie inside the support, the parts being driven by a motor 2 and the sprocket shafts being disposed vertically. The picture is projected upwards by a prism 6 and horizontally by a mirror. The table is supported by two idle pulleys 52, 53 and a driven pulley 50 geared to the feed mechanism. A sprocket 59 fixed to the shaft, of the pulley 50 feeds the film to the outside of the roll and a similar sprocket may be provided to take the film from the inside and feed it to the projector. Two rollers 60. 61, one of which is mounted on a spring arm. guide the film to the sprocket 59 and may be disposed in an electric cut-off circuit adapted to come into operation when the firm breaks. A spring-controlled guide shoe 65 holds the film on the sprocket 59 and may be provided with a finger for separating the rollers 60. 61 for threading the film. Specification 10474/95 also is referred to. According to the first Provisional Specification the table supporting and driving pulleys engage a wedge-shaped annulus on the underside of the table, which may be in the form of a conical frustum with the higher edge preferably on the inside. According to the second Provisional Specification the take-up pulley may be carried on the end of a spring-controlled lever, 'and the gate is in the form of an L-shaped member pivoted at the angle and spring-pressed at the end of one arm.
Patent GB-114563-A (GB)
Title: Improvements in or relating to Boot Trees.
Inventor: DAVIDSON JAMES MILNE
IPC: A43D3/14
Filed: 1917-08-07
Abstract: 114,563. Davidson, J. M. Aug. 7,1917. Trees and stretchers.-A tree for a top boot comprises a shin part n, Fig. 1, foot part b, heel part c, a key which is formed in two parts, Figs. 2 and 3, a more or less L-shaped part d and a part h curved respectively at e and j to follow the contours of the outside and the inside of the leg. The two parts of the key are formed at the front and back with tongues f, k to engage grooves g in the shin and heel part, of the tree.
Patent GB-113781-A (GB)
IPC: G01B13/06
Abstract: 113,781. Booth, T. S. March 2, 1917, [Convention date]. Indicating.-Comprises a liquid magnifying- indicator for use in gauging-apparatus. A cylinder 16 has mounted on it a glass tube 3 flared at the bottom and closed at the top by a cap provided with a filling-hole 13, a vent 12 and a valve 8. A piston 17 acted upon by a spring 22 and having a concave top slides in the cylinder and forms the bottom of a mercury chamber. The tube is bored with large and small diameters at bottom and top and is provided with scales as shown. A set-screw 19 is provided and engages the piston. The cylinder is carried by a bracket 23 on which is pivoted a bent lever 25, the free end of which is shaped for moving over a. surface, while the other end engages the piston-rod. To use the instrument for ordinary work, the mercury is adjusted to the zero of the lower scale by the set-screw and departures from this standard registered on the lower scale. For finer work, the upper scale is used. The glass tube is surrounded by a metal protecting tube 21.
Patent GB-591925-A (GB)
Title: Improvements in or relating to process and means for hooping railway sleepers
IPC: E01B31/28
Filed: 1945-05-04
Abstract: 591,925. Wire strainers. STREIT, A. P., and STREIT, M. J. M. May 4, 1945, Nos. 11383 and 11384. Convention dates, Feb. 2, 1943, and Jan. 18, 1944. [Class 45] [Also in Groups XXII, XXIII and XXX] A hoop for securing around railway sleepers is partially pre-shaped before being placed in position. The ends are then brought together, tension being applied alternately to one end and the other, the ends then being connected together and the excess length cut away. The hoop consists of a round wire 1, Fig. 38, bent into a hook 10 at one end and provided with a reference mark 22 near the hook. The hoop is first bent to fit the corners 39, 40 of the sleeper 2 and is then placed under tension from the hook end 10 and from the free end alternately, and the hook and free ends are then engaged together, either by looping them together, clips 26, Fig. 16, being then used to hold the longer ends in place, or by welding to the free end a split ring, or a hook 32, Fig. 24, or a plate 71, Fig. 25, having a series of oblique holes 58 engaged by the hook. The portable apparatus for pre-shaping and tensioning the hoop, Fig. 28, comprises a hollow frame 3, having stationary and movable jaws 4, 5 connected by a screw 6 having a nut with ratchet teeth engaged by a pawl 29 on a handlever 50. Jaw 4 carries an abutment 44 and a pin 45 for pre-shaping the hoop. The jaws 4, 5 engage the sleeper to compress it before placing the hoop in position. The screw 6 carries nuts 36, 37 having square teeth engaged by a sleeve 46 sliding on the screw and provided with a ratchet handle 42. Nuts 36; 37 have arms 51, 52 with lever jaws 57 to grip the hoop ends, so that one hoop end is tensioned by rotation of its corresponding nut, whilst the other end is held fast, arm 52 being placed at mark 22. Pliers for cutting and shaping the free end have one jaw with a slot 21, Fig. 14, for seating the wire 1, the jaws having cutting edges 19, 20 for cutting the wire and shaping the free end into a hook. A single die, Fig. 22, may be used for completing the joint, being provided with an inclined groove 14 for closing the hook and a recess 28 with converging sides for closing the clips 26.
Patent GB-474035-A (GB)
Title: Improvements in or relating to electric power supply systems
IPC: H02J3/38
Filed: 1936-04-21
Abstract: 474,035. Electricity supply; switching systems. GENERAL ELECTRIC CO., Ltd., COATES, H. J., and GARRARD, C. C. April 21, 1936, No. 11396. [Class 38 (iv)] Distribution network arrangements.-A supply system includes a station comprising a number of switch houses 7-12, each of which has a number of circuit breakers 14-19 arranged conductively in a ring, with a supply source 1-6 and feeders F connected to junction points between the circuit breakers in the ring, and a connection to a tie point connecting the several circuit breaker rings. The tie point is formed by a further set of circuit breakers 14-19 connected in a ring in a further switch house 13, and is connected to the switch houses 7-12 through current limiting reactors 22-27. Any line may be isolated by opening two adjacent switches. One of the feeders from each of the units 2, 8 and 5, 11 may be connected through a transformer 20 or 21 to a ring main or grid in which case the respective current limiting impedances 23, 26 have a higher value than the other impedances. The circuit breakers 14-19 in each cubicle may be arranged in individual fire proof compartments provided with vents. The circuit breakers may be arranged on the roofs of the switch houses. Isolating switches, instrument transformer, &c. are disposed in rooms below the circuit breakers,
Patent GB-541003-A (GB)
Title: Process for refining and improving fats with simultaneous recovery of the accompanying substances
IPC: C11B3/10
Filed: 1939-04-15
Abstract: 541,003. Purifying fats. KAUFMANN, H. P. April 15, 1939, No. 11506. [Class 91] [Also in Group IV] Fats are subjected to a process of chromatographic adsorption to free them from accompanying substances such as colouring substances, phosphatides, vitamins and mucous substances, and to enable the accompanying substances themselves to be recovered. The process comprises the passage of the original fats, if desired in the form of a solution through a compact layer of adsorbent. Solvents mentioned include benzene, benzine, and trichlorethylehe. Adsorbents mentioned include alumina, carbon, bleaching earths and calcium carbonate. The adsorbed accompanying substances may be recovered by washing the adsorbent substance with pure solvent. In examples (1) Whale oil is passed through granulated silica gel which removes the vitamin. A content. (2) A carbon disulphide solution of Lagos palm oil is passed through a column of fullers earth. The column is washed with carbon disulphide to remove the last traces of fat and then with acetone to recover the adsorbed carotenes. (3) A soya miscellany is worked up into lecithin and sterins by adsorption. There may be conveniently used as starting materials for the present invention solutions obtained in the extraction of crude fat containing materials. After removal of the accompanying substances, the fats themselves may be subjected to a fractionation by adsorption. Specification 541,002 is referred to.
Patent GB-251664-A (GB)
Title: Improvements in and relating to the excitation of alternating current machines
IPC: H02P9/24
Filed: 1926-05-03
Abstract: 251,664. British Thomson-Houston Co., Ltd., (Assignees of Prince, D. C.). May 2, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Systems depending on two or more machines; regulation, automatic.-The excitation of a synchronous machine connected to a transmission line is obtained by applying to its field coils two voltage components, one of which varies directly as and substantially in step with the load current and the other of which varies subsequently to the variations in the load current in such a manner as to complement the first component and maintain the machine volts at normal value. In the form shown, the first component is given by mercury-arc rectifiers. The alternator 2 is connected to the line 1 and is excited by an exciter 5 which is in series with the alternator field coil 4 through paralleled rectifiers 6, 7, 8. The rectifiers are connected to the line through series transformers 9, 10, 11, the mid-points of which are connected to the field coil 4 by a conductor 12, the cathodes 13 being connected at 16 to the other end of the field coil through the armature 5. The rectifiers thus inject an excitation voltage component varying practically instantaneously with variations of the alternator load current. The exciter field 22 is controlled by a spring -biassed regulator 20 of the usual type operating on the alternator voltage with the slight time lag usual with such regulation. An inductance 17 and resistance 18 are connected in parallel with the exciter armature and alternator field to reinforce the excitation volt component given by the rectifiers. The two volt components may be applied to separate exciter coils instead of a single coil 4. The application to a synchronous motor connected to a transmission line is also described in the Specification.
Patent GB-541221-A (GB)
Title: Improvements in or relating to power transmitting couplings
IPC: F16D3/62
Filed: 1940-07-12
Abstract: 541,221. Flexible couplings. PRESTWICK & CO., Ltd., J. A., and MARCHANT, W. D. July 12, 1940, No. 11621. [Class 80 (ii)] The driving and driven coupling members 1, 2 are in the form of double-arm levers or discs connected together by flat links wholly or in part of rubber and pivoted to the arms. The links are preferably so dimensioned that the centrifugal force exerted thereon at the normal speed of rotation is balanced by the tension in the links but where substantial malalignment of the shafts is likely to occur, the centrifugal force may exceed the tension effect so as to cause the links to bow outwards. The links are preferably bushed to receive pivot pins. The double-arm levers may be replaced by spiders naving three, four or more arms. Where heavy loads have to be transmitted without undue increase in the size of individual links, these may be arranged side-by-side as at 3, 3a, Fig. 5. The links may be of laminated construction.
Patent GB-1076989-A (GB)
Title: Improvements in and relating to signal amplifier circuits with gain control
IPC: H03G3/10
Filed: 1966-03-17
Abstract: 1,076,989. Transistor amplifying circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. March 17, 1966 [March 20, 1965], No. 11698/66. Heading H3T. In a multistage amplifier in which D.C. negative feedback is provided, i.e. by resistor 6 and decoupling capacitor 7, a variable gain control resistor 8 is connected between two points, i.e. the base and collector of transistor 2, having signal voltages normally in phase opposition. With decreasing control resistance the negative feedback thereby produced increases and hence the output signal decreases; at a very low value of the control resistance transistor 2 is effectively short-circuited and the overall D.C. negative feedback changes into a positive feedback which cuts off the amplifier, transistors 1, 3 then forming a trigger circuit. For this to occur the transistor 2 should have a higher internal base-emitter threshold voltage than transistor 3, a condition which may be artificially fulfilled by including in its emitter circuit a resistor 9 and/or a semiconductor diode polarized in the forward direction.
Patent GB-450716-A (GB)
Title: Improvements in and apparatus for the recovery of phenols from waste aqueous liquors
IPC: C07C37/72
Filed: 1935-04-16
Abstract: <PICT:0450716/IV/1> In the removal of phenols from ammoniacal and like liquor by extraction with liquid phosphoric acid esters, particularly trialkyl and triaryl phosphates such as tricresyl phosphate, the extraction is effected in the presence of inert gases, to facilitate the separation of emulsion-forming substances present in the liquor in the form of foam.  Three layers are obtained, the lowermost comprising the phosphate with absorbed phenols, the middle comprising the phenol-free liquor and the uppermost comprising the foam containing the emulsion-forming substances. Foam-forming substances may be added to the mixture such as saponines, mucilages or the alkali metal salt of alkylated sulphonic acids or of esters of sulphuric acids, e.g. sodium salts of propylated or butylated naphthalene sulphonic acids or of oleyl alkyl taurines.  The inert gases may comprise waste combustion gases, carbon dioxide or nitrogen.  Tricresyl phosphate supersaturated with carbon dioxide and the liquor to be treated are mixed in a container a and then allowed to settle in a clarification vessel f provided with a restricted base part g and an internal tube h.  The phenol laden ester separates in the part g and may be removed, the foam collects within the tube and may be withdrawn at i, and the treated liquor still containing some phenol may be re-treated in identical apparatus m--n.  The phenols are recovered from the esters by steam distillation.
Patent GB-1030725-A (GB)
Title: Electrophotographic copying material
IPC: G03G5/05
Filed: 1963-03-25
Abstract: 1,030,725. Preparing printing plates xerographically. KALLE A.G. March 25,1963 [March 31, 1962], No. 11741/63. Headings G2H and G2M. [Also in Division H1] In the preparation of a printing plate or of a printed circuit use is made of an electrophotographic material which consists of an electrically conductive support bearing a photoconductive layer (see Division H1). Support materials are metal foils (for example those of magnesium, aluminium, zinc, copper, and brass) but plastic-metal foil laminates, plastic vapour-coated with metals, and paper supports (especially when given hydrophilic and highly conductive pre-coats such as polyamides) may also be used. Suitable photo conductors, which may be mixed, include the oxides and sulphides of cadmium and zinc, oxadiazoles, imidazolones, imidazole-thiones, triazoles, oxazoles, thiazoles, triazines, and hydrazones. The photoconductive layer may contain dyestuff sensitizers and a few weight per cent of materials such as pigments, fillers, and activators. Specific electrophotographic materials are described. The materials are used to form planographic or relief printing plates or to form printed circuits. The material is charged, exposed to an original, and the image formed developed and fixed. The photoconductive layer is removed in the non-image areas with an aqueous alkaline de-coating solution which may contain an organic solvent. Suitable solutions are aqueous solutions of alkali metal hydroxide, alkali metal carbonates, alkali metal silicates, tertiary alkali metal phosphates, ammonia, methylamine, dimethylamine, hydrazine, and morpholine. Organic solvents which may be added include methanol, ethanol, propanol, isopropanol, methyl glycol, ethylglycol, acetone, dimethyl formamide, and dioxane. Hydroxyethyl cellulose will increase the viscosity of the decoating solution and favour wetting. In making planographic plates the decoating solution preferably contains sodium silicate, potassium silicate or a mixture of these which may also contain some calcium silicate. The plate is wiped with dilute phosphoric after decoating, and inked with greasy ink. The acidic binder of the photoconductive layer chemically bonds to aluminium or zinc supports to give firmly adherent image areas. To make a relief plate a material with a zinc support is processed up to and including the decoating stage and is then etched with dilute nitric acid which attacks the areas free from toner. The toner is then dissolved away to complete the plate. To produce a printed circuit an electrographic material is used which has a plastic foil-metal foil laminated support. After processing up to and including decoating, the exposed metal (copper) is etched away with iron chloride or ammonium persulphate. The toner is then removed to leave the required printed circuit.
Patent GB-771120-A (GB)
Title: Improvements relating to the treatment of articles composed of natural rubber compositions
Inventor: EVANS THOMAS RALPH
IPC: G01N30/02
Filed: 1954-04-23
Abstract: To prevent subsequent plasticizer migration, car mats and other articles, e.g. extruded tubing, composed wholly or in part of a body of natural rubber composition are treated by applying a coating of an adhesive for nylon and the natural rubber composition to the natural rubber composition body, applying a solution of a soluble nylon on top of this coating, and allowing the solvent to evaporate.  Soluble nylon is that soluble in lower aliphatic alcohols, and the preferred nylon is one where some amino hydrogens are replaced by hydroxy-methyl groups obtained by the action of formaldehyde on polyhexa-methylene adipamide.  The nylon may be applied in solution in a lower alcohol e.g. ethanol, or n-propanol, which may be admixed with water, and the solvent evaporated before or after vulcanization of the rubber layer.  The adhesive may be a mixture of resorcinol, formaldehyde, and rubber latex or a solution of an organic diisocyanate, such as diphenyl methane diisocyanate in xylol.  More than one nylon coating may be applied, which may be differently coloured.  A layer of a substance different from the natural rubber composition and from the nylon, but compatible with the nylon, may be attached to the nylon layer.
Patent GB-1004598-A (GB)
Title: Microwave phase shifter
IPC: H01P1/18
Filed: 1963-03-26
Abstract: 1,004,598. Microwave phase-shifters. BENDIX CORPORATION. March 26, 1963 [April 2, 1962], No. 11816/63. Heading H1W. A microwave phase-shifter comprises a short length 10 of dielectric waveguide and a movable dielectric member 18 for varying its electrical length. The member 18 may be made of foamed polystyrene and may have a periphery bounded by an Archimedean spiral so that, upon rotation about axis 20 a saw-tooth pattern of phase variation is produced. As the element 18 is moved away from the waveguide in the direction of the axis 20, the resolution of the phase-shifter increases but the maximum available phase-shift decreases. In a modification (Fig. 5, not shown), the dielectric element is in the form of a rectangular plate arranged parallel to the dielectric waveguide and movable in a direction at right angles to the waveguide axis.
Patent GB-316118-A (GB)
Title: Improvements in and connected with pneumatic tyres
IPC: B60C9/02
Filed: 1928-04-23
Abstract: 316,118. Caddy, W. T., and Doig. D. April 23, 1928. Jackets and covers.-The cord or other textile foundation of a tyre cover is reinforced by ribbons 5 of intermeshed wire helices connected, as by staples 6, to form bands which are embedded in rubber and enclosed in fabric casings. The bandsmay be arranged transversely or obliquely, and in single or multiple layers.