baber/WOPTO huggingface dataset:
Patent GB-419642-A (GB)
Title: Improvements in means for the hydraulic transmission of power
IPC: F03C1/047
Filed: 1934-03-08
Abstract: 419,642. Hydraulic transmission of power. EYNARD, E. M., 247, Boulevard Jean JaurÞs, Billancourt, Boulogne-sur-Seine, France. March 8, 1934, No. 7414. Convention date, April 7, 1933. [Class 69 (ii).] Means for controlling the motor of a hydraulic transmission apparatus comprises a differential piston, the smaller end of which is acted on by the supply pressure, and the larger end by a pressure determined by the load. In the form shown in Fig. 1, the hydraulic motor comprises a number of groups of radial cylinders 5a, 6<a>, and each longitudinal set of cylinders is connected by passages to a cylinder 13. The number of groups supplied with liquid is determined by the position of a slide valve 11, having a piston 14 acted on by the pressure of the liquid entering at 16, and a larger piston 12 working in the cylinder 13 and acted on by the pressure therein, a loaded valve 20 being provided. Camoperated inlet and exhaust valves 18, 21, are also provided. In another form, the slidable member 11 acts to vary the eccentricity of a radial-cylinder motor. In a further form, the motor has sections 23<a>, 23b &c., Fig. 4, each of the gear-wheel type, supplied from a pump 40, and the loaded valve 20 has a skirt 42. By turning the valve through 180‹ liquid is supplied to a second slide valve 11<a> to obtain a reverse drive.
Patent GB-495362-A (GB)
Title: Device applicable for maintaining a movable member against a fixed member and in particular for hooking automobile bonnets
IPC: E05C19/06
Filed: 1938-03-09
Abstract: 495,362. Hook fastenings. L'ACCESSOIRE DE PRECISION. March 9, 1938, Nos. 7418 and 7419. Convention dates, Nov. 10, 1937 and Jan. 14, 1938. [Class 44] A device for maintaining a movable member against a stationary member, especially for automobile bonnets, comprises a bent metal rod having one end rigidly secured to the movable member whilst the other end, which forms the operating handle, passes through a slot in the movable member, movement of the handle along the slot causing the rod to be brought into or out of engagement with a fixed hook. One end 2 of a rod 1 is secured to a plate 5 mounted on an automobile bonnet 3 by means of a member 6, channelled to accommodate the rod and riveted or welded to the plate 5, the upper end of the channel being split to form two lugs 10 which are bent at right-angles to the plate to embrace the cranked portion 11 of the rod 1 to prevent the rod from turning in the channel. The free end of the rod passes through a U-shaped slot 12 in the plate 5 to form an operating handle 4 which is urged to the top of either limb of the slot by a vertically disposed spring loop formed by the rod. When the handle 4 is at one end of the slot, the portion 13 of the rod engages a fixed hook 14, the portion 13 being inclined so as to press the bonnet downwards and inwards. The rod is cranked at 16 to limit outward movement of the bonnet due to vibration. Instead of a simple loop, the spring portion may be coiled and may be directed obliquely away from the bonnet. The handle 4 is formed as a loop which may be covered by a plated metal shell to facilitate actuation of the fastening and improve its appearance. In a modification, the spring loop may be disposed horizontally and parallel to the bonnet, the end of one limb being bent so as to lie along two edges of the plate 5, which edges are provided with lugs to clench over the rod. The other limb co-operates with a fixed hook mounted perpendicular to the bonnet and the free end of this limb is bent to pass through a straight vertical slot in the plate 5. The lower edge of the notch of the hook forms an inclined ramp which forces the bonnet outwards when the handle is depressed.
Patent GB-784774-A (GB)
Title: Improvements in or relating to transformers
IPC: H01F30/10
Filed: 1956-03-09
Abstract: 784,774. Transformers. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. March 9, 1956 [March 14,1955], No. 7433/56. Class 38 (2). In a transformer preformed adjacent coils 13, 14, 15 are disposed on a laminated wound core 11 and secured against relative movement by a mass of thermosetting resinous material 17 cured in situ between the ends of the coils and part of the core. The resinous mass may be urea formaldehyde, melamine formaldehyde, a phenolic resin, an epoxy resin or glycidyl ether mixed with sufficient of a filler such as silica, magnesia or alumina to provide a puttylike consistency. Alternatively a mass of resinimpregnated glass may be used.
Patent GB-550105-A (GB)
Title: A new catalytic process for the manufacture of tetrahydrofuran
IPC: C07D307/08
Filed: 1941-06-16
Abstract: 550,105. Nickel catalysts. WILSON, C. L., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 16, 1941, No. 7605. [Class 1 (i)] [Also in in Group IV] Tetrahydrofuran is prepared by contacting tetrahydrofurfuryl alcohol in the vapour phase with nickel or a nickel-containing catalyst at a temperature about 200‹C. The following examples of the preparation of catalysts are given:-(1) nickel-on-pumice prepared by fusing nickel nitrate hexahydrate with granular pumice and passing first air at 400‹C., and then hydrogen at 300‹-350‹C. through the product when packed into the catalyst chamber ; the activity of the catalyst is enhanced by heating it to 550‹-600‹C., re-oxidizing in a stream of air and again subjecting it to the treatment with hydrogen; (2) a nickel-on-silica catalyst prepared by heating silica gel with nickel nitrate, nickel carbonate and water, and reducing the granular product in the catalyst chamber with hydrogen ; (3) a catalyst made by heating granulated pumice with a mixture of nickel nitrate, copper nitrate and manganese nitrate in water, and passing hydrogen through the product; (4) a catalyst prepared by passing first chlorine and then alternately hydrogen and air through a reaction tube containing compact rolls of nickel gauze until hydrogen chloride is no longer evolved, when a final oxidation and reduction treatment is given; the catalyst may be reactivated by passing a slow stream of hydrogen through it, or a stream of air followed by hydrogen may be used ; (5) a catalyst obtained by the alternate oxidation and reduction of pieces of gauze made of a copper-nickel alloy; (6) a catalyst prepared by passing hydrogen chloride through granulated Raney alloy nickel-aluminium at 400‹-450‹C., followed by air at 550‹C., and hydrogen at 350‹C.
Patent GB-1503565-A (GB)
Title: Interference reduction circuit
IPC: H04B7/00
Filed: 1975-02-24
Abstract: 1503565 Microwave couplers POST OFFICE 24 Feb 1975 [27 Feb 1974] 7622/75 Heading H1W [Also in Division H4] Cross-coupling between strip lines, Figs. 10A, at locations 48-51, ensure that, having regard to the phase shifts occurring along the lines, signals Ex, Ey corresponding to non-orthogonal linearly polarized signals, are transformed into isolated signals Ea, Eb at ports 34, 35. The strip lines are on both sides of dielectric board 41, itself sandwiched by boards 42, 43 each supporting a ground plane 44, 45. The arrangement is used to control cross-coupling between signals as received in a frequency re-use communication system, see Division H4.
Patent GB-526189-A (GB)
Title: New and improved method and apparatus for making coated paper
IPC: D21H25/16
Filed: 1939-03-09
Abstract: 526,189. Coating paper. CHAMPION PAPER & FIBRE CO. March 9, 1939, No. 7708. Convention date, Aug. 27, 1938. Addition to 499,732. Drawings to Specification. [Classes 96 and 140] In coating paper as disclosed in the parent Specification, the excess liquid coating mixture is removed by an air jet without disturbing the " filter cake." In one form the paper passes about a roll and dips into a bath" of coating mixture, the compressed air nozzle and a supporting roller being adjustable towards or from the bath. Coating may occur between the wet presses and the dryer section or in the dryer section. Both sides of the paper may be coated. U.S.A. Specification 1,980,923 is referred to.
Patent GB-455215-A (GB)
Title: Improvements in or relating to counters
IPC: G06M1/34
Filed: 1935-03-12
Abstract: 455,215. Counting - apparatus. VEEDER-ROOT, Inc., Sargeant Street, Hartford, Connecticut, U.S.A.-(Assignees of Spaunburg, H. L.) March 12, 1935, No. 7737. Convention date, March 21, 1934. [Class 106 (i)] A counting-mechanism particularly for use with a loom for counting the picks comprises a plurality of counter units and a resetting mechanism with a common locking means to permit a resetting or zeroizing operation on any selected unit, the locking means included a key-lock and member co-operating therewith and with a member rotatable with theshaft of the resetting mechanism. Means are provided to prevent removal of the key of the lock after initiation of the resetting operation and to prevent reverse operation of the resetting mechanism. In the form shown in Figs. 2 to 5, two counters for day and night shifts respectively are mounted on parallel shafts 20 journalled in a casing 1 and are actuated by a drive member 5 and clutch mechanism (not shown), adjustable by a control member 6. Each counter comprises three number units with Geneva-type transfer mechanism. Each unit includes a numeral drum 12 secured to a sleeve 13, Figs. 7, and 8, loose on the shaft 20. To the sleeve is also secured a locking disc 14 and a transfer tooth disc 15. Within the disc 14 is mounted a reset pawl 16, Fig. 14, controlled by a spring to press the pawl through an aperture in the sleeve ready to engage a slot 19 in the shaft. On the side of the drum 12 opposite to the disc 14 is a gear wheel 21 rotatably mounted on the sleeve and having spring pressed pawls 22 to co-operate with a ratchet member 23 disposed in a recess of the drum. Secured to each shaft 20 is a locking member 26 with a reduced portion 29 formed with a flat surface 30. The portions 29 pass through similarly shaped apertures in a locking bar 32 which extends transversely of the two shafts and co-operates with a cam 39 connected to the barrel 40 of a lock 8. In the locked position shown in Fig. 3 the key 9 can be readily inserted and withdrawn ; when the key is moved to the unlocking position Fig. 2 the reset mechanism operating member 7 is then free to be turned to effect the zeroizing while the locking bar 32 is displaced to prevent the cam 39 being returned so that the key is held against withdrawal until the zeroizing operation is completed. To prevent reverse rotation of either of the operating members 7 each of the parts 29 is formed with a ratchet member 43 with a number of teeth 48 adapted to co-operate with a corresponding spring pawl 49. Fraudulent advance of the numeral drums is prevented by disposing the flat surfaces 30 of the locking members 26 with respect to the slot 19 of the shafts 20 so that the pawls 16 are normally out of contact with either wall of the slot as shown in Fig. 14.
Patent GB-512527-A (GB)
Title: An improved tank for the processing of photographic film
IPC: G03D13/04
Filed: 1938-03-14
Abstract: 512,527. Photographic developing apparatus. WRIGHTSON, J. R., and GARLAND, A. H. March 14, 1938, No. 7893. [Class 98 (ii)] In a tank of the kind in which the film is wound in a single helical layer on a rotatable drum dipping into the processing solution, the bottom of the tank proper is substantially concentric with the drum and is shaped at one end to form a pouring lip, the bottom being supported between vertical side members to provide a space under the lip where an inspection lamp may be located. As shown, the drum 5 on a spindle 10 supported on side members 2 is driven by an electric motor through gearing 14, 15. The tank bottom 3, Fig. 3, having a pouring lip 3c, is inlet into the members 2 which are of three-ply wood or of transparent material, and under it is a trough from which developing liquid can be drained by a pipe 7. An inspection lamp 20 and a re-exposure lamp 22 are housed beneath the tank bottom, the portion of the tank above the lamp 22 being frosted so that only indirect rays reach the film. An immersion heater is located in the trough or inlet into the walls. To permit inspection of the film, the drum has an aperture .5c, Fig. 1, which may be aligned with a periscope 24. The parts may be made from plastic material such as celluloid or synthetic resin.
Patent GB-192314-A (GB)
Title: A new or improved lock for doors, shutters and the like
IPC: E05B65/14
Filed: 1922-03-18
Abstract: 192,314. Edwards, L. E. March 18, 1922. Fastenings, magnetic.-A bolt for fastening the doors of railway goods vans, closed wagons, shutters &c., is held in either of its two positions by a sliding gravity-actuated blocking-piece which is released by applying a. portable magnet. The bolt c slides between the slotted block a and the block b fitted to the door or like e and covered by a plate d, and is recessed at c<1> and c<2>. A piece f slides vertically in the slot in the block a and engages in the recss c<2> for blocking the bolt against withdrawal and in the recess c<1> for holding the bolt withdrawn. If desired, the bolt may only be withdrawn to clear the staple g, when the piece f will rest on the lug c<3> between the recesses engages in the recess c<2> for blocking the bolt is shot. To release the bolt to poles of a permanent magnet or a separate electromagnet are inserted through holes d<2> in the flange d' of the cover plate d to lift the piece f out of the recess in the bolt. The top of the piece f may be shaped to require a magnet having ends of a corresponding shape before the attraction is sufficient to lift it, or the magnet may be shaped to enter shaped holes d<2>. Stops j, j<*> limit the motion of the bolt which is operated by the finger-recess c<4>.
Patent GB-630730-A (GB)
Title: Improvements in and relating to negative feed-back amplifying circuits
IPC: H03F1/36
Filed: 1946-03-14
Abstract: 630,730. Valve amplifying circuits. GENERAL ELECTRIC CO., Ltd., and HEAD, N. E. March 14, 1946, No. 7976. [Class 40 (vi)] In a negative feedback amplifier, the feedback loop includes an inductive element so constructed that the ratio of the effective resistance to the effective reactance remains constant over a wide frequency range above the highest frequency to be amplified, and the loop phase shift does not fall below 30 degrees for any frequency at which the loop gain is greater than - 10 db. As shown, the stages V<1>, V2, V<3> of an amplifier are coupled by networks Z, Fig. 2 (not shown), giving 90 degrees phase shift in a wide frequency band above the highest frequency to be amplified, f1. A network G, in parallel with the feedback connection between the output and input transformers, comprises a resistance shunted by a condenser and in series-with an inductance X, Fig. 3 (not shown). The network G is designed to give a phase shift of 45 degrees in the opposite sense to that produced by the networks Z at frequencies equal to or greater than f1. The inductance X comprises a coil wound on a laminated core of magnetic material so that the ratio of its effective resistance to its effective reactance is constant for a frequency band above f1. The other components of the network G and the networks Z are so chosen that the phase shift over the feedback loop exceeds 30 degrees for all frequencies at which the loop gain exceeds - 10 db.
Patent GB-140445-A (GB)
Title: Improvements in reversing apparatus for regenerative furnaces
IPC: F23L15/02
Filed: 1920-03-17
Abstract: 140,445. Davison, O. H. June 5, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Regenerative fittings.-In apparatus for reversing the course of air and gases through regenerative furnaces of the kind comprising a #-shape duct revolubly mounted at one end upon a flue terminal and adapted to be tilted and swung so that the ' free ' end may engage with one or other of two other flue terminals, the duct is provided with a wheel adapted to engage with a loop-shape track having cam surfaces so shaped that the duct, as it is swung, is tilted upwardly to disengage its ' free ' end from one flue terminal, and is then moved towards another flue terminal with which it engages after its ' free ' end has been lowered. Figs. 1, 2, and 5 show a duct 11 pivoted on rollers 13 adapted to travel on a track formed on the outer wall of the water-seal trough 10 at the top of the flue terminal 9. The duct carries on its ' free ' end a roller 20 adapted to engage with a loop-shape track 18 having cam surfaces 19. The duct is counterbalanced by a weight attached to a cable secured at one end to one of the loops 23 and at the other end to the. weight, the cable passing over pulleys on an elevated platform. The loop-shape track prevents the duct from being tilted more than is necessary for lifting it free from the flue terminals. The duct may be operated by hand, steam, compressed air, hydraulic, or electric power. As shown, an electric motor 8 actuates through gearing contained in the casing 23 a crank 29 attached by a rod 36 to the duct 11 and serving to swing and tilt the duct so as to transfer its ' free ' end from the flue terminal 15 to the adjacent flue terminal. A rotary contact-brush 42 is driven through the gearing in the casing 23 and serves to break contacts in the electric circuit of the motor when the duct has moved from one flue terminal to the other. The flue terminals are provided with hinged lids 44 which are operated by the duct through rods 49 pivoted to the duct and to arms 47 mounted on the hinge pins of the lids. When the lids are used in connexion with air flues, they are arranged to act as regulating valves, for which purpose cables 51 are provided by which the lids may be retained partly open, and pin-and-slot connexions are provided between the arms 47 and rods 49.
Patent GB-1271591-A (GB)
Title: Epoxy binder for magnetic coating compositions
IPC: C09D5/23
Filed: 1970-02-19
Abstract: 1,271,591. Magnetic compositions. MEMOREX CORP. 19 Feb., 1970 [20 Feb., 1969], No. 8017/70. Heading H1H. [Also in Division C3] A magnetic coating composition comprises magnetic particles dispersed in a binder comprising: (A) an epoxy resin containing reactive oxirane groups, mol. wt. 800-5000, epoxide equiv. wt. 400-2600; (B) an aliphatic fatty acid polyamide having an amine value of at least 300; (C) a mixture of a primary amine and a complex salt of a Lewis acid and a primary amine. The ratio of amine groups in the polyamide to oxirane groups in the epoxy resin is 0À8: 1 to 2 : 1, and the amount of mixture (C) is 0À1 to 2À0% by wt. based on the total binder composition including the magnetic particles. Ferric oxide and chromium dioxide particles are specified. The composition is applied to a tape, e.g. polyester, or to a rigid substrate e.g. aluminium or plastics, and heat-cured. In examples, compositions in which (C) is a mixture of N-aminoethyl piperazine or diethylene triamine with BF 3 -ethylamine complex are applied to polyester films and heat-cured at 135-150 C. for 3 mins. The magnetic recording media so produced do not require surface-finishing.
Patent GB-249869-A (GB)
Title: Improvements in and relating to synchronous induction electric motors
IPC: H02K19/14
Filed: 1926-03-24
Abstract: 249,869. British Thomson-Houston Co., Ltd., (Assignees of Merrill, F. W.). March 24, 1925, [Convention date]. Alternating-current motors; pole-pieces; cores.-A synchronous-induction motor provided with a secondary member having salient poles has the tips of the poles stepped to produce a polar salient which decreases from starting to synchronous conditions. The arrangement is such that between the inactive and active iron forming the salient poles, areas exist which are of sufficiently low reluctance to carry the flux at starting but are of sufficiently high reluctance to be free of flux during synchronous running. As shown, a slotted laminated core is cut away at B to form the salient poles A, the teeth 16, 17 at the pole-tips being stepped to different depths, or in a modification they can be stepped to equal depths. The polar salient during starting conditions is represented by the angle A and at synchronism by the angle C, the angle D representing the inactive iron during synchronous running. Specification 175,084 is referred to.
Patent GB-573909-A (GB)
Title: Production of phenol substituted carboxylic acid esters
IPC: F02P5/06
Filed: 1943-05-21
Abstract: Phenol-substituted carboxylic acid esters for use as plasticizers are prepared by reaction of a phenolic compound with an ester of a monocarboxylic acid, which acid contains at least four, and advantageously at least seven, carbon atoms, in the presence of a catalyst comprising boron tri-fluoride or its addition products, at 35-200 DEG  C.  Specified phenolic compounds are: phenol, resorcinol, o- and p-phenyl-phenols, b  - naphthol, hydroquinone, salicylic acid, salicylic acid esters, guaiacol, diphenylolsulphones, cresols, mesitol, durenol and thymol. Specified acids are: oleic, elaidic, cinnamic, 9-hendecenoic, erucic, tiglic, b -propylacrylic and ricinoleic acids.  Specified esters are the methyl, ethyl, b -hydroxy-ethyl, propyl, isopropyl, butyl and isobutyl esters. Specified boron tri-fluoride addition products are those with water, an alcohol, an ether, e.g. dimethyl or diethyl ether, a cyclic ether, e.g. dioxane, a phenol or a phenol ether.  Examples relate to the reactions of: (1) methyl oleate with phenol at 110 DEG  C. in the presence of a catalyst consisting of an addition product of boron trifluoride with 3 mols. of water to yield methyl octadecanoic-1-acid ester substituted by p-hydroxyphenyl in the 9 or 10 position; (2) b -hydroxyethyl oleate with phenol at 160 DEG  C. in the presence of a catalyst as in (1) to yield the corresponding b -hydroxyethyl ester; (3) the components in (1) at 150 DEG  C. with the same catalyst; (4) the components in (1) at 110 DEG  C. with a catalyst consisting of an addition product of boron trifluoride with 2.7 mols. of water; (5) ethyl oleate with phenol at 70 DEG  C. in the presence of gaseous boron trifluoride.  Samples filed under Sect. 2 (5) of the Acts are of: (A) methyl (9) 10-[5-methylphenyl-2-ol]-octadecanoic-1-acid ester prepared by the reaction at 110 DEG  C. of methyl oleate with p-cresol in the presence of boron trifluoride dissolved in methanol; (B) methyl (9) 10-[1-naphthyl-7-ol]-octadecanoic acid ester containing a small proportion of the corresponding 2-naphthyl-6-ol derivative prepared by the reaction of (A) with b  - naphthol replacing p-cresol.  The Specification as open to inspection under Sect. 91 comprises also the use of: (a) the following phenolic components, hexyl phenol, tri-isopropyl phenol, octyl catechol, sec.-hexyl-2-chloro - 4 - hydroxy - toluene, diamyl phenol, cyclohexyl phenol, hexyl resorcinol, octyl betanaphthol, tetrahydroxy-benzene, dihydroxyxylene, diphenylol propane xylenol and tetramethyl phenol; (b) as acid component, sorbic acid.  This subject-matter does not appear in the Specification as accepted.