baber/WOPTO huggingface dataset:
Patent GB-269701-A (GB)
Title: Improvements in abrasive machines for thicknessing and surfacing wood and other materials
IPC: B24B7/16
Filed: 1926-02-09
Abstract: 269,701. Ransome, J. S. Feb. 9, 1926. Flat extended surfaces, surfacing; gauges.-A machine for reducing wood &c. to required thickness, and which also may be employed for surfacing one face prior to the thicknessing, consists of a standard A carrying a shaft C on which is mounted a disc D carrying on its lower face sand paper or other abrasive E, and on its upper surface a similar abrasive F. The disc is driven from a motor P and the shaft is normally lifted by a spring G and a lever H, the disc being depressed on to the work K by a treadle I. The work is mounted on a table L and is moved beneath the disc by a pusher M; it is pushed to slide down an incline O and into a receptacle when to size. In order to obtain the correct thickness, an adjustable stop J is provided which, when the work is to size, arrests the downward movement of the lever H and the disc. For surfacing the work it is held against the upper face of the disc. According to the Provisional Specification the disc may be fixed axially, and the table moved tc bring the work against the disc, or the disc spindle may be horizontal, the feed being horizontally towards the disc.
Patent GB-346501-A (GB)
Title: Improvements relating to brake rods, more particularly the brake rods of motor vehicles
IPC: B60T11/00
Filed: 1930-02-03
Abstract: 346,501. Transmitting-mechanism for brakes. FIAT SOC. ANON., 250, Via Nizza, Turin, Italy. Feb. 3, 1930, No. 3625. Convention date, March 30, 1929. [Class 103 (i).] A device for damping the transverse vibrations of a brake rod, more particularly the brake rod of a motor vehicle, when passing through a slot in a partition comprises the usual rod return spring 4 and a plate 5 loosely mounted on the rod 1 and pressed by the spring against the partition so as to generate a frictional resistance and also to close the slot 3.
Patent GB-251702-A (GB)
Title: Improvements relating to mechanism for offset proofing
IPC: B41F3/30
Filed: 1925-02-09
Abstract: 251,702. Evans, A. B. Feb. 9, 1925. Cylinder and like offset machines ; impression surfaces.-In an offset proofing-press of the kind in which a carriage supporting the printing-block and a superposed rubber offset blanket is reciprocated beneath a scraper, the blanket is stretched tightly against the underside of a supporting-plate so as to prevent stretching and buckling of the blanket by the action of the scraper and the usual leather or zinc tympan. In one form, Fig. 2, the blanket f is clamped at one end by a bar g to the underside of a thick metal or other plate a and at the other end is clamped by a bar h to a tensioning-bar d adjustable by nuts e on screwed extensions of members b secured to the sides of the ptate a. The plate is connected by hinges j to a block n fixed to a cross-bar o on the carriage p supporting the printing-block, and the hinges are adjustable vertically by nuts r and springs s to bring the blanket f into the plane of the printing-surface. The portions l of the hinges engage the block n to prevent rearward movement of the plate a during its passage beneath the scraper. Lateral movement of the plate is prevented by a projection t on the bar d engaging in a groove in a cross-bar v. In another form. Fig. 4, a thin plate a is employed and clamped at one end to the front cross-bar w of a frame and at the other end to a bar x adjustable on the screwed extremities of the side bars b of the frame. The blanket f is secured at the front end to the underside of the plate a by a bar w<2> and at the other side is connected to the tensioning- bar d also mounted on the side bars b.
Patent GB-549551-A (GB)
Title: Ligno-cellulose fibrous pulps and process of making same
IPC: D21B1/12
Filed: 1941-03-17
Abstract: 549,551. Preparation of cellulosic pulp. AKTIEBOLAGET DEFRIBRATOR. March 17, 1941, No. 3663. Convention date, March 21, 1940. [Class 2 (ii)] Lignocellulosic raw material is subjected to mechanical defibration in a closed receptacle at a temperature above 100‹C. and under a steam pressure above atmospheric pressure, acid conditions corresponding to a pH-value of 1-4 being maintained within the raw material by the addition of a solution of an acid, a salt, or other compound capable of creating acid conditions at the elevated temperature of the treatment. The treatment is carried out for a period of not more than 10 minutes, after which the fibre stock is immediately discharged from the receptacle. The process is applicable to the treatment of straw from wheat, rye, corn, rice, grasses, flax, and other plants, or of wood, bagasse or bamboo. The acidic substance may be sulphuric, sulphurous, hydrochloric, nitric, or acetic acid, or sodium bisulphate, sodium bisulphite, or aluminium sulphate. The conditions of treatment are preferably such that a slight hydrolysis of the hemi-celluloses including pentosanes occurs but the lignin and cellulose are substantially unaffected. The process may be carried out as a continuous operation in apparatus having a continuous feeder, pre-heater, disc refiner, and discharger. The feeder may consist of a plunger or feed-screw, continuously pressing the chips or chaff into a steam-tight plug through a relatively narrow plug-forming pipe into the pre-heater of the defibrator which is working in an atmosphere of steam under pressure. The quantity of solution added is not greater than what can be absorbed by the material. The plunger or screw feeder presses out any excess of acid solution. The defibrated pulp is discharged to the outside atmosphere. It may then be washed, beaten, screened, and formed into paper or board. The acidic solution may be applied to the fibrous material by immersion or spraying. If desired, it may be sprayed into the defibrator. A mineral acid may be used in an amount of 0.2-3 per cent. based on the weight of dry straw. The moisture present, including condensed steam, should be about one-quarter to ten litres per kilogram of material when the latter is subjected to the mechanical treatment.
Patent GB-555520-A (GB)
Title: Improvements in or relating to thermoplastic compositions and process for preparing the same
IPC: C08L57/02
Filed: 1942-03-19
Abstract: 555,520. Resins. HERCULES POWDER CO. March 19, 1942, No. 3672. Convention date, Nov. 7, 1941. [Class 95] [Also in Group IV] A composition suitable for use as a substitute for shellac comprises about 60-80 per cent by weight of pine-wood resin which is substantially insoluble in petroleum hydrocarbons, about 10- 30 per cent. of ethyl cellulose, and 5-30 per cent. of a plasticizing agent. The resin may be obtained by subjecting pinewood, preferably stump pine-wood, if desired after steaming to remove turpentine, pine oil, and other volatile constituents, to extraction with a coal tar hydrocarbon such as benzene or toluene, freeing the extract from volatile constituents, and extracting wood resin from the residue by means of a petroleum hydrocarbon such as gasoline, thus leaving a resin having a low abietic acid content. Alternatively, the residue of the initial coal tar hydrocarbon extract may be treated with a mixture of petroleum hydrocarbon and furfural, and the two layers then separated. The furfural layer is taken and the furfural is removed by evaporation leaving the desired resin. This resin is insoluble in petroleum hydrocarbons, and completely soluble in alcohol. It has a methoxy content of about 3-7.5 per cent., acid number 80-110, and a drop melting point of 95-125‹ C. The ethyl cellulose used is of the type soluble in organic solvents and of ethoxyl content 41-51 per cent. It may have high or low viscosity characteristics. The plasticizer may bean aryl phosphate, e.g. diphenyl mono- (oxenyl) phosphate, a halogenated hydrocarbon, e.g. chlorinated diphenyl, a phtbalic acid, ester, e.g. ethyl phthalyl ethyl glycolate, a glyceride, e.g. castor oil, coconut oil, or tripropionin, or butyl acetyl ricinoleate, methyl abietate, o- or ptoluene sulphonamide. The ingredients of the composition may be mixed with the aid of heat or solvents, e.g. acetone. The composition may be dissolved in methanol, ethanol, benzene, or toluene to form a spirit varnish, or it may be used in molten state to coat or impregnate cloth or paper or to form an electrical insulating medium. It may be used as a moulding composition and may be used for making phonograph records. Ingredients such as cellulose fillers, clay, slate, silica, carbon black, marble flour, zinc oxide, and mould lubricants such as vegetable and mineral waxes, Stearic acid, magnesium steacate, and zinc stearate may be incorporated in the composition. The composition may be mixed with shellac if desired.
Patent GB-785691-A (GB)
Title: Improvements in or relating to apparatus for transporting and packaging perforated objects
IPC: B65B15/00
Filed: 1955-02-08
Abstract: 785,691. Packaging hollow rivets &c. AVIATION DEVELOPMENTS, Ltd. Feb. 8, 1955 [Feb. 8, 1954], No. 3727/55. Class 94(1). [Also in Group XXX] A machine for packaging perforated articles such as rivets having a central bore, with their bores in alignment, comprises means to thread the articles onto a looped wire 36, a drive reel 42 for impelling the rivets around the loop to a mandrel portion 37 of the wire, and means to wrap the articles while on the mandrel portion. Rivets 25 are fed by known means along a shoot 24 to a feed wheel 28 having arms 29 each consisting of two resilient strips 30, 31 which are separated by a cam 33 adjacent the shoot to enable them to grip the rivet shanks. The arms thread the rivets on a wire 36 in a guide tube 39, the rivets travelling to a loop 37 of the wire coiled round a rotating drum 42 which acts as a feed member passing the stream of rivets around the coil and down a guide tube 50 to a first wrapper folding device 61. The device 61 receives wrapping material (metal foil) from a roll 58 and folds it round a former (not shown) through which the wire and rivets pass. The rivets, with the wrapping, pass between rubber surfaced rollers 66, 67 after having been separated into batches by a spacer pawl 82 reciprocating into and out of the rivet path to pinch the package material under the influence of a cam 81. The rollers press the wrapping about the rivets, the wrapping having a single fold with its free margins superposed. If the wrapping material is heat sealable, the rollers 66, 67 are heated and the package emerges from them complete to be cut to desired length. Alternatively and as shown, the package strip passes along the wire 36 to a further folder 70, which turns over the wrapper free edge, and to rollers 71, 72, to form a seam 73 Fig. 11. A shearing blade 87 then cuts the strip into lengths. Specification 785,692 is referred to.
Patent GB-575643-A (GB)
Title: Improvements relating to injection moulding machines
IPC: B29C45/18
Filed: 1944-02-29
Abstract: 575,643. Injection-moulding machines. E.M.B. CO., Ltd., and COCKERILL, W. H. Feb. 29, 1944, No. 3760. [Class 87 (ii)] Relates to injection-moulding machines in which raw material is fed intermittently and in measured amounts from a hopper to a heated cylinder, from which it is forced into a mould by a plunger. According to the invention, the material is transferred from the hopper to the cylinder by a slide valve, operatively associated with the plunger and formed with a series of compartments which receive material from the hopper and discharge it into the cylinder. As the plunger C moves to the right under the action of compressed air contained in a cylinder d, the piston valve 'i is also moved to the right through the crosshead l and adjustable collars m. The series of compartments n, formed by deep circumferential grooves in the valve, pass under the open hopper h, from which raw material falls into the compartments. On the return stroke of the plunger c, the valve moves to the left and the raw material falls into the short supply passage f. When a long stroke is taken by the plunger c, the valve moves further to the right, exposing more compartments to the hopper and hence discharging more material to the passage f on the return stroke.
Patent GB-753363-A (GB)
Title: Improvements in or relating to magnetic amplifier arrangements
IPC: H03F9/06
Filed: 1954-02-09
Abstract: 753,363. Magnetic amplifiers. GENERAL ELECTRIC CO., Ltd., and PARTON, K. C. Jan. 24, 1955 [Feb. 9, 1954], No. 3797/54. Class 40 (4). In a single-phase full-wave bridge-rectifying magnetic amplifier, the cores of the reactances 14, 15 are of magnetic material which is such that after the magnetic flux has been increased to saturation value in one direction, the flux density remains substantially near saturation when the magnetizing current is decreased to zero without reversal, and connections are provided to the junction points of the rectifiers 10, 12 and reactances 14, 15 over which reetting current may be supplied to the reactances. During the half-cycle of the supply frequency when terminal 19 is positive with respect to terminal 20 the supply voltage is applied across reactance 15 and load resistance 18, in series with rectifiers 12 and 11, and at some point in this half-cycle, depending upon the initial condition of flux in the core of reactance 15, that core will saturate and for the rest of the half-cycle practically the whole supply voltage is applied across the load resistance 18. During the same half-cycle the supply voltage is applied across the reactance 14 and the resetting circuit connected between terminals 21 and 22, in series with rectifiers 12 and 11. Thus the flux in the core of the reactance 14 which had reached saturation during the previous half-cycle is reset to a value depending upon the effective impedance of the resetting circuit. The further rectifier 23 is included when certain types of resetting circuit are employed, but the resetting circuit always has the polarity indicated by rectifier 23. Operation in the next half-cycle is similar, the core of reactance 15 being reset while the load current flows in reactance 14.
Patent GB-472675-A (GB)
Title: Improvements in and relating to electric irons
IPC: D06F75/40
Filed: 1937-02-09
Abstract: 472,675. Electric irons. CAMPANA, G. Feb. 9, 1937, No. 3873. Convention date, Feb. 10, 1936. [Class 138 (ii)] [Also in Group XXXVII] An electric iron is provided with a supporting frame comprising two side members 7 connected by legs 5, 6 pivoted to the iron at the points 3, 4 and acted on by adjustable springs 11. The pivot shaft 4 also carries a forwardly projecting arm 9 which bears on the underface of a portion 16 of the handle which is pivoted to the main portion 15. On bringing the two handle parts together and grasping them in use, the frame is retracted ; on release of the handle the part 16 is automatically swung into the position shown wherein it supports the iron above the working surface. The portion 16 is provided with an extension 17 carrying a bridging contact 18 which completes the circuit to the heating unit at the contacts 20 when the iron is in use and breaks it when the iron is raised. The circuit may be completed, when the iron is raised, by the operator pushing in a button 22, the inner end of which carries a contact to bridge the contacts 20. When the two parts of the handle are again brought together the extension 17 pushes the button to the inoperative position, if it has been pushed in, and maintains the circuit itself.
Patent GB-708313-A (GB)
Title: Improvements in adjustable fastening devices for garments
IPC: A41F1/00
Filed: 1952-02-14
Abstract: 708,313. Adjustable hook or button fastenings. STATHAM, N. Feb. 14, 1952, No. 3970/52. Class 43 An adjustable fastening device for adjustably securing two parts of clothing together, e.g. the waistband of a skirt or a belt &c. comprises a strip of flexible material forming a permanent track adapted to be fixed to one of said parts and carrying a movable slider which can be releasably clamped at a desired point on the track, the slider serving as a carrier or mount for a fastening element such as a button or a hook arranged and adapted to engage a complementary fastening element, such as a button-hole, of the other part. As shown in Figs. 1 and 4, a button 27 is secured by a rivet 28 to a tab 26 forming the operating member of a clamp 23 which is pivoted on trunnions 24 between a'pair of ears 22 extending upwardly from a slider 20 that can be held in a set position along a track 10 secured at one end of a waistband 17. The track 10 is preferably formed in known manner by folding the central longitudinal portion of a strip 11 of strong fabric around a core 13 and applying staples 14 over and around it at regular intervals. A stop 26a is provided at each end. The edges of the fabric strip are next secured between plies 15 and 16 of the waistband 17. The button may be mounted on the body of the slider instead of on the manipulating tab. In a modification, Fig. 5, the tab 26<1> is elongated and bent to form a hook terminating in an enlarged plate portion 27'. Specification 358,434, [Group XXV], is referred to.
Patent GB-690896-A (GB)
Title: Improvements in apparatus for dropping loads from aircraft
IPC: B64D17/38
Filed: 1951-02-20
Abstract: 690,896. Dropping explosive and other loads from aircraft. SAUNDERS-ROE, Ltd., and TELFORD, R. Feb. 7, 1952 [Feb. 20, 1951[, No. 4102/51. Class 9(ii) Apparatus for dropping loads from aircraft is provided in which the ejector comprises a tubular casing 10 carrying a transverse pin 11 engaging a hook pivoted on a ring 13 at the end of a load-carrying line. The ring 13 is received in a notch 15 in the casing and a spring 16 presses the hook 12 against the pin 11. A striker 17 connected to the aircraft extends into the casing and has a pin-andslot connection 20, 19 therewith, while springs 21 extending between the pin 11 and a pin 22 on the striker tend to pull the striker into the casing. The striker is held by a cocking lever 23 engaging a catch 25. On dropping a load, the pull on the line draws the casing downwardly, thus tensioning the springs 21 and bring- ing the lever 23 against a cam surface 26 which pushes the lever clear of the catch 25. The casing descends until the pin 20 reaches the bottom of the slot 19, when the tension in the line pulls out the release pin for the load. The springs then pull the casing upwardly relative to the striker 17 which pushes the hook 12 clear of the pin 11 against the action of the spring 16 so that the hook with the attached line drop from the aircraft.
Patent GB-725957-A (GB)
Title: Spindle adapter
IPC: G11B17/14
Filed: 1953-02-13
Abstract: 725,957. Automatic gramophones. RADIO CORPORATION OF AMERICA. Feb. 13,1953 (Feb. 29, 1952], No. 4133/53. Class 40 (2). An adaptor for the centre-post of a record changer, to enable records with large diameter holes to be played, comprises a central body portion 22 and cap 65, both of which are stationary on the centre-post 10, 13, and a part 20 which is free to rotate with the turntable 12. The ejector 16 acts against a projection 38, Fig. 4, on a plate 31 coupled to a similar plate 32 by a pivoted element 24 so that the said plates move in opposite directions against the resistance of a spring 42. The plates 31, 32 have upstanding members 35, 36 to control retractable record-supporting shelves 45, 46 and separator plates 51, 52. The latter are arranged in overlapping relationship so that when the ejector 16 is operated, the shelves 45, 46 are withdrawn while the separators 51, 52 are extended whereby the lowermost record of the stack is released on to the turntable.
Patent GB-537561-A (GB)
Title: An improved method of making an article of footwear having a rubber sole and a mouldfor carrying out the method
IPC: B29D35/06
Filed: 1940-03-05
Abstract: 537,561. Rubber soled footwear. ROCA, M., and GUIX, E. March 5. 1940, No. 4146. [Class 17 (ii)] [Also in Group V] Footwear having a rubber sole and an upper of other material has the out-turned edge of the upper, or an outwardly projecting strip secured to at least the toe portion of an inturned upper, embedded in the sole. Either the edge of the upper 3 is out-turned and, secured to the edge of the insole, or, if the upper is inturned, a strip 7 is secured to at least the toe portion. A suitable vulcanizing, mould comprises a base plate 11 having a recess shaped to the sole and heel, and a member 13, preferably divided mid - longitudinally, engaging the edge of the sole and heel and having secured thereto steel plates 14 engaging the upper edge surface of the sole and entering the crease. Handles 29 pivoted to links 28 pivoted to the half member further from the handles, close the half members together. The member 13 is engaged by struts 16 carrying cross pieces 19 engaging the last by screws. When assembled, the device is placed in a vulcanizing press of which the lower plate is heated, and the handles 29 are removed. The constriction allows ventilation of the upper to prevent this being damaged by heat. After vulcanization the handles are replaced and are used to lift the work from the press.
Patent GB-1059305-A (GB)
Title: Linearity correction circuits for television apparatus
IPC: H03K4/28
Filed: 1965-01-29
Abstract: 1,059,305. Sawtooth circuits. RADIO CORPORATION OF AMERICA. Jan. 29, 1965 [Feb. 10, 1964 (2)], No. 4163/65. Heading H3P. In a cathode-ray tube deflection circuit, particularly a line output stage of a television receiver, S-correction for flat screen cathode-ray tubes is provided by means of a series resonant circuit, tuned to the sawtooth frequency, and connected across tappings on the output transformer, the deflection coils being connected between an intermediate point of the series resonant circuit and a further point on the transformer. The Q-factor of the circuit may be reduced by means of a resistor shunted by a variable inductor.
Patent GB-482920-A (GB)
Title: Improvements in impeller shaft packings for water pumps
IPC: F16J15/34
Filed: 1937-02-12
Abstract: 482,920. Stuffing - box substitutes; centrifugal pumps. GARDNER & SONS, Ltd., L., GARDNER, J., and GARDNER, J. K. Feb. 12, 1937, No. 4169. [Classes 110 (i) and 122 (v)] In a water-circulating pump the impeller shaft a is supported in a self-aligning bearing d having the same centre e as a spherical sealing surface between two members f, g held in contact by a spring f<1>.