baber/WOPTO huggingface dataset:
Patent GB-1185678-A (GB)
Title: A Telephone System
IPC: H04Q5/00
Filed: 1967-05-01
Abstract: 1,185,678. Automatic exchanger. SUPERIOR CONTINENTAL CORP. 1 May, 1967 [11 May, 1966], No. 19926/67. Heading H4K. Carrier terminal equipment is tapped on to a subscriber's two-wire line at the exchange and substation ends to provide a carrier circuit over the line for a second subscriber; the substation carrier terminal equipment being powered by a battery which is charged over the line by the exchange only while the first subscriber is on-hook. In Figs. 2 and 5 the first subscriber 18 is connected via line 16 to an exchange outlet 12, 14, and is isolated by lowpass filters 38<SP>1</SP> and 40 from the added carrier circuit which extends from exchange outlet 126, 128 via terminal equipment 44, 46 at the exchange and 84, 82 at the substation to a subset 34. Battery 88 powering the substation terminal equipment is charged from the line via diode 100 and transistor 104, except when the transistor ceases to conduct as the line voltage is lowered in response to subscriber 18 going off-hook and also when the diode is reversed biased as the subscriber 18 receives reverse battery supervision. Capacitor 108 prevents charging during the dialling impulses. Raising of the handset by the second subscriber 34 supplies negative potential from lead 268 to the transmit carrier section 82 and carrier frequency F2 is sent as a calling signal, its detection in the exchange receiver section 46 operates relay 160. The closed contacts 148 of this relay short the limiting resistor 150 bringing up the line relay 125 and enabling the power regulating circuit 144 to energize via lead 166 the exchange transmit section 44. Dialling pulses are sent by the subscriber 34 as interruptions of the carrier F2 and are repeated by relay 160. Ringing current applied from exchange outlet 126, 128 to the hybrid transformer 48 by-passes limiting resistor 150 and enables the power regulating circuit 144 to energize the transmit section and send carrier frequency F1 as a calling signal to subscriber 34. Detection of F1 in the substation carrier receive section 84 by the ringing control circuit 234 energizes a D.C. ringer 238. Reply of the subscriber 34 connects negative potential to lead 266 which again energizes the transmit section 82 but also now cancels via lead 286 the ringing signal from circuit 234.
Patent GB-293703-A (GB)
Title: Manufacture of perfumes
IPC: C07C45/49
Filed: 1928-07-09
Abstract: 293,703. I. G. Farbenindustrie Akt.- Ges. July 7, 1927, [Convention date]. Aldehydes; ketones; alcohols; esters; acids.- Substances with pronounced perfume which are aromatic compounds containing two isopropyl groups, are produced by introducing a keto group into aromatic compounds containing two isopropyl groups by known methods; or by introducing a keto group and simultaneously a second isopropyl group into an aromatic compound which contains onlv one isopropyl group linked to the nucleus. By further changing the keto group introduced or already present, in known manner, different perfumes may be obtained. In the examples di-isopropyl-benzaldehyde is produced by treating di-isopropyl-benzene with carbon monoxide in presence of aluminium chloride and cuprous chloride with or without gaseous hydrochloric acid; or by treating cumol with carbon monoxide in presence of aluminium chloride and cuprous chloride. Di-isopropylacetophenone may be made in a similar manner. Di-isopropylbenzalacetone is produced by alkaline condensation of acetone with isopropyl-benzaldehyde. Di-isopropylbenzoic acid is obtained by oxidizing the corresponding aldehyde, and its esters may be prepared. Di-isopropyl-benzylalcohol is obtained by chemical or catalytic reduction of the aldehyde, and its acetate by acetylation. Di-isopropyl cinnamic aldehyde and its homologues are obtained by condensing diisopropyl benzaldehyde with acetaldehyde and its homologues, and from these the corresponding hydrocinnamic aldehydes are obtained. The Specification as open to inspection under Sect. 91 (3) (a) describes the preparation of diisopropyl benzaldehyde by treating cuminic aldehyde with isopropyl chloride dissolved in carbon bisulphide, in the presence of aluminium choride. This subject-matter does not appear in the Specification as accepted.
Patent GB-457939-A (GB)
Title: Improvements in or relating to clutches and servo means for operating the same
IPC: F16D13/04
Filed: 1935-07-13
Abstract: 457,939. Friction clutches. RUSSELL, R. C., 3549, Lynfield Road, Cleveland, Ohio, U.S.A. July 13, 1935, No. 20044. [Class 80 (ii)] Servo means for effecting power disengagement of a spring-engaged motor-vehicle clutch under manual control comprise interengaging threaded sleeves 50, 58, the inner sleeve 58 being fixed to the gear-box 60 while the outer sleeve 50 has splined thereon a sleeve 65 which is controlled by the clutch pedal 75 and which has a radial flange 66 co-operating with a flange 67 on a sleeve 40 splined in the clutch cover plate 28, which latter is secured to the driving fly-wheel 10. The sleeve 40 has a flange 49 co-operating with the radial clutch disengaging levers 34 and the sleeve 50 has a flange 55 co-operating with the flange 49. A spring 98 normally maintains the sleeve 50 against a stop nut 82 on the sleeve 58, the nut 82 being adjustable by a worm 85. On depressing the pedal 75, flange 66 engages flange 67, causing sleeves 65 and 50 to rotate. The sleeve 50 screws along the sleeve 58 and moves the sleeve 40 to the left, thus actuating the levers 34 to disengage the clutch by an amount proportional to the movement of the pedalactuated sleeve 65. The driven plate 17 of the clutch is resiliently connected to its splined hub 15 by springs 22 arranged between radial projections 23 on the hub and pins 24 projecting from the plate 17.
Patent GB-373468-A (GB)
Title: Improvements relating to key cases
IPC: A45C11/32
Filed: 1931-07-13
Abstract: 373,468. Key holders. BUXTON, Inc., 322, Main Street, Springfield, Massachusetts, U.S.A. July 13, 1931, No. 20052. Convention date, Nov. 17, 1930. [Class 44.] A key holder, from which the snap-hooks 11 for receiving the keys are removable, comprises a tubular support 16 having slots 20 with enlarged ends 21 through which approximately ball-shaped heads 13 on the hooks can be inserted and the hook shanks 12 engaged in the narrow portions of the slots. A movable locking member retains the hooks in place. As shown, the support 16 has plate extensions 18, 19 secured to the case a by rivets 15 and the locking member, (shown separate, Fig. 9), is a plate 22 slidably mounted between the parts 18, 19, the plate 19 being offset at 23 to provide a shoulder serving to guide the lower edge of member 22. The upper edge is curved to conform to the back wall of support 16 and has projections 24 with intermediate recesses 25. Normally, the projections 24 register with, and close, the enlargements 21 of the slots 20 and prevent removal of the hooks, the recesses registering with the enlargements 21 when the plate 22 is slidably displaced to allow removal of the hooks. An upturned tongue 26 on plate 22 limits movement of the plate in one direction, and a similar larger tongue 27 serving as a finger-piece and working in a slot 28 in plate 19 limits movement in the opposite direction. In a modification, Fig. 11, the member 22 is biased to locking position by a spring 31 and is moved to release position by a pivoted cam 35 engaging a projection 34 on the locking member and provided with a finger-piece 38 by which the cam may be rocked. Figs. 19 and 21 show the cam in normal and hook-releasing positions respectively.
Patent GB-752414-A (GB)
Title: Improvements in rocking horses and the like
IPC: A63G13/08
Filed: 1954-07-09
Abstract: 752,414. Rocking horses. SHAMAH, I. July 9, 1954, No. 20196/54. Class 132(1) [Also in Group XXXI] A rocking horse or the like comprises a rockable part 8 having a seat 27 at one end and connected at the other end and between its end respectively with a base 1 by a pivoted support 17, 18, having foot rests 28, and a link 6; a further part 13, having hand holds 29, being mounted with limited rocking movement on rockable part 8 and being connected by a tension spring 24 to the base 1 between the pivotal connection of the support and its rear end. The support consists of bars 17, 18 whose upper ends extend on each side of bar 8 and are held by a pin 16 which also holds part 13, the latter representing the horse's head. The lower ends of bars 17, 18 extend through slots in bar 8 and are held by a pin 23 passing through lugs mounted on base 1. The link 6 consists of parallel links pivoted at their lower and upper ends respectively to an extension 4 of base 1 and one end of bar 8. Distance pieces 11, 11<SP>1</SP> are secured under bar 8 and carry boards 9, 10 representing the horse's body whose extremities are held. by distance pieces 12. Bars 2, 3, secured beneath base 1, carry wheels 22 and the lower ends 6c of links 6 have rubber shoes 6b so that, as the horse is rocked, these engage the floor and push the horse along. A series of holes are provided in bar 8 and links 6. through which a bolt 7 may be passed to secure them together. Seat 27 may be attached to bar 8 at different positions. When the horse is not intended to progress, wheels 22 and extensions 6c are omitted.
Patent GB-202493-A (GB)
Title: An improved needle or stylus for gramophones or disc talking machines
IPC: G11B3/48
Filed: 1922-07-24
Abstract: 202,493. Hodges, W. E. B. July 24, 1922. Tools for reproducing. - A gramophone needle, preferably made of silver steel, has a tubular shank 1, a glass-hard point 2, and a shoulder 3. A washer 4 of rubber or the like may be placed on the shoulder so as to bear against the end of the needleholder when the needle is in use.
Patent GB-747422-A (GB)
Title: Improvements relating to spectacles
IPC: G02C1/04
Filed: 1953-07-22
Abstract: 747,422. Spectacle frames. DAY, R. R. April 9, 1954 [July 22, 1953], No. 20297/53. Class 97 (1). A spectacle frame A is of plastic material and extends around a portion of the upper periphery of each lens which subtends an angle greater than 180 degrees at the centre of the lens, the latter being held in a groove C in the frame by the engagement of lugs H, H<SP>1</SP> in the groove with corresponding slots in the lens edge, the ends of the frame being sprung apart to allow insertion of the lens which is then gripped resiliently by the frame.
Patent GB-167186-A (GB)
Title: Improvements in resilient wheels
IPC: B60B9/28
Filed: 1921-07-28
Abstract: 167,186. Gerike, R. July 29, 1920, [Convention date]. Spring wheels with continuous outer rigid ring and helical springs. - A spring wheel comprises a hub connected to a rim by tubular spokes containing compression and tension springs. The outer ends of the spokes are held by bolts q through flanges p, Fig. 1, to the rim c. The inner ends of the spokes, Fig. 3, are held by a screwed shank k to the hub. Ball joints are made in the spokes at u and x, that at x consisting of three segments y<1>, y<2>, y<3>, Fig. 4, held in the cup part x by a spring ring z and allowing the part r, Fig. 3, to slide axially with relation to the part v. The tension spring d is held at its outer end by being screwed on to the threaded projection o, and at its inner end by being clamped by the conical nut m. The compression spring c is held at its ends by projections f, g on the members o, m respectively.
Patent GB-499339-A (GB)
Title: Polyvinyl acetal resins
IPC: C08K5/00
Filed: 1937-07-23
Abstract: A composition suitable for shaping by heat and pressure comprises a water-insoluble polyvinyl acetal resin, 35 to 94 per cent acetalized and containing substantially no ester groups, plasticized with a water-insoluble ester plasticizer in which the resin is insoluble at ordinary temperatures, throughout which mixture is uniformly dispersed about 1 per cent to about 15 per cent of water (reckoned on the whole composition).  For calendering, the amount of water may be 5 to 12 per cent, preferably 6 to 10 per cent; for extrusion, it may be less than 5 per cent, preferably 1 to 2 per cent.  The preferred resins are prepared from polyvinyl bodies having a molecular weight of above 10,000, preferably at least 25,000; they are acetalized from 35 to 90 per cent; and are prepared from aliphatic aldehydes containing 2 to 6 carbon atoms, preferably in a saturated straight chain, e.g. butyraldehyde, propionaldehyde, or valeraldehyde. Plasticizers specified are phthalates, tartrates, and succinates of glycols, glycol ethers, and lower alcohols, e.g. diethyl-, di-n-butyl-, bis-b -dichlorethyl-, di(b -n-butoxyethyl)-phthalates, di - n - butyl tartrate; polyethyleneglycol hexanoates, e.g. di-n-hexanoate, di-(2-ethyl)-butyrate, or di-(2-methyl)-pentanoate of di-, tri-, tetra-, and penta-ethyleneglycols.  The products may be formed into sheets, e.g. for safety glass, ribbons, rods, or tubes. Examples illustrate the use of resins 67 per cent acetalized with butyraldehyde mixed with triethyleneglycol di-(2-ethylbutyrate), compounded with water.  Specifications 497,736 and 497,737 are referred to.
Patent GB-647954-A (GB)
Title: Electric gaseous discharge lamp cathode
IPC: H01J61/067
Filed: 1947-07-29
Abstract: 647,954. Discharge lamps; cathode proeessing. SYLVANIA ELECTRIC PRODUCTS, Inc. July 29, 1947, No. 20499. Convention date, Nov. 23, 1940. Drawings to Specification. [Class 39 (i)] The coiled-coil filamentary tungsten cathode of an electric discharge lamp comprising a minor coil wound into a major coil, has an alkaline earth oxide filling, which solely and entirely fills the space within the minor coil and does not extend substantially beyond the outer surface of the turns of the minor coil, the space within the major coil being empty. A suspension of the filler material is applied to the filament by dipping, spraying or preferably by means of an eye-dropper. It is then passed over an air jet, to blow off the material not located within and between the turns of the mirror coil. A series of cathode-heating steps may then be employed to cause the filler material to shrink from the outer surface of the coil, and to expose the tungsten wire to serve as focal points for the discharge.
Patent GB-830598-A (GB)
Title: Improvements in hull constructions for ships especially ships for the transport of goods in bulk
IPC: B63B25/10
Filed: 1958-06-26
Abstract: 830,598. Hull structure. ALBIACH, V. June 26, 1958 [June 29, 1957], No. 20578/58. Class 113. A hull has two longitudinal bulkheads 1, 2 disposed one on each side of the vertical axial plane of the ship to form an empty space or cofferdam 3 reserved for ballast and forming an insulating space between side cargo tanks. The axial cofferdam may be combined with a double deck 4, Fig. 3, or a double bottom 5, Fig. 4, extending across all or part of the width of the ship, and the double bottom may be combined with double sides 6, Fig. 5. The deck and bottom and the bulkheads 1, 2 may be connected by a stiffening structure in the cofferdam 3.
Patent GB-865724-A (GB)
Title: Improvements in or relating to alarm systems
Inventor: GOODSON DOUGLAS WALTER
IPC: G08B25/00
Filed: 1958-06-27
Abstract: 865,724. Electric alarm systems. GENERAL ELECTRIC CO. Ltd. June 29, 1959 [June 27, 1958], No. 20680/58. Class 118. An alarm system has a number of parallel circuits 3, 4, each including a set of normally open contacts 5, 6 and an associated detector 8, 10 and a further current path including a common detector 22, which once operated remains operated until reset. Closure of the set of contacts in one of the parallel paths operates both the associated detector and the common detector, and subsequently disconnects the circuit to the common detector permitting it to be reset for operation by closure of the contacts in another of the parallel paths. Closure of the set of contacts 5, for example, completes a circuit to the coil 7 of the detector 8, and the coil 21 of the detector 22. Coil 21 closes contacts 24, 25 (which are self-latching) completing the circuit to the alarm bells 26, 27 and also shorting out the coil 21 to allow the current to increase to energize coil 7 and close contacts 11 to the indicator lamp 12. Contacts 16 open to disconnect the circuit to the coil 21, and operation of the reset button 29 energizes coil 28 to reset the common detector 22 for subsequent operation by closure of the contact set in a further parallel path, e.g. contacts 4. A rectifier 30 is provided across coil 21 to delay the release of this coil.
Patent GB-275976-A (GB)
Title: Improvements in and relating to telephotography and television
IPC: H03B17/00
Filed: 1927-08-05
Abstract: 275,976. Schildenfeld, R. Aug. 10,. 1926. [Convention date]. Copying-telegraphs.-The intensity of the current produced by a photoelectric cell is increased by directing a beam light on to the same or another cell under control of the current. A varying beam of light 1, Fig. 1, is incident on a photoelectric cell 2, and the output current, amplified by a valve 3, actuates a mirror galvanometer. The mirror 7 reflects a beam of light from a source 8 through a wedge-shaped slit 9, the edges of which are angularly adjustable, on to the cell 2 or on to another cell 11. Fig. 2 shows a picture-exploring device for copying-telegraphy or television. The picture 12 is divided in one direction by a slit diaphragm 13, and is subdivided in a direction at right-angles to this by a slit drum 15 moving in front of a mirror 14 which reflects light from the picture on to a photoelectric cell 18.
Patent GB-999851-A (GB)
Title: Process for the conversion of cyclic ketoximes
Inventor: HUBER WOLFGANG
IPC: C07D201/04
Filed: 1962-05-30
Abstract: A process for the production of lactams by the catalytic rearrangement of cycloalkanone oximes in the presence of supported or unsupported solid acidic catalysts at 210 DEG  to 450 DEG  C. is characterized by contacting the oxime in the liquid state with the heated catalyst.  The catalyst may be fluidized by the vaporized oxime and/or an inert gas, e.g. nitrogen or water vapour. Cycloalkanone oximes specified are those containing 5 to 12 carbon atoms, e.g. cyclopentanone oxime, methyl cyclopentanone oxime, cyclohexanone oxime, methylcyclohexanone oxime, cyclo-octanone oxime and cyclododecanone oxime; these may be used in the anhydrous state or may contain up to about 15% wt. of water, i.e. the amount present when the oxime is prepared from a ketone and a hydroxylamine salt. Catalysts specified are phosphoric acid, anhydrous boric acid (i.e. boron oxide), boric acid, or alkali metal hydrogen sulphates, e.g. lithium, sodium or potassium hydrogen sulphates or mixtures thereof. These may be suported on suitable carriers, for example oxides of those elements of Group III and IV of the Periodic Table having an atomic weight greater than 25, e.g. alumina, bayerite, corundum, silica gel, diatomaceous earth, tin dioxide and titanium dioxide; pumice, activated charcoal and zinc oxide may also be used as carriers. The process may be carried out at subatmospheric, atmospheric, or superatmospheric pressures. The product may be purified by distillation under reduced pressure, where necessary with the addition of oleum, followed by treatment with potassium permanganate, filtration, and further distillation.  Specific examples relate to the preparation of caprolactam, methylcaprolactam and caprylolactam.
Patent GB-186217-A (GB)
Title: Improvements in or relating to escapement-actuating mechanism of typographical composing machines
IPC: B41B11/18
Filed: 1921-08-04
Abstract: 186,217. Linotype & Machinery, Ltd., Drake, T., and Field, J. G. W. Aug. 4, 1921. Escapements for type-barmaking machines. Relates to means for releasing matrices alternately from different magazine-channels by successive depressions of the same key. Two escapement-rods 2, 3 are adapted to be operated in alternation by a single oscillating key-rod 1, which is urged to the left by a spring 4 so that a pin 5 on the rod bears against the periphery of a ratchet-wheel 6. The wheel 6 is provided with flat surfaces 6<c> alternating with recesses 6<b>. whereby the keyrod is caused to rest beneath the rods 2, 3 alternately. At each rise of the key-rod, the wheel 6 is rotated a step by the engagement of the pin 5 with a spur 6<d> above the surface 6<c>, or with the top of the recess 6b. A friction device, such as a spring 9, retards the rotation of the wheel 6.
Patent GB-1025320-A (GB)
Title: Radiant energy responsive display device
IPC: H01L31/14
Filed: 1964-05-20
Abstract: An image converter having a photo-conductive and an electroluminescent layer between suitable electrodes also has a luminescent layer such that incident radiation excites the luminescent layer, the radiations from which have a wavelength in the region of maximum sensitivity of the photo-conductive material.  The device may comprise a base-plate 1, e.g. glass, a conductive layer 2, e.g. tin oxide, an electroluminescent layer 3, e.g. zinc oxide activated by copper or manganese, a reflective layer 13 of e.g. titanium oxide or barium titanate which also serves to prevent electrical breakdown, an opaque layer 4 of e.g. carbon in a plastic organic binder, 1-10m  thick, to prevent optical feed-back, a photo-conductive layer 5 <PICT:1025320/C4-C5/1> e.g. of cadmium sulphide activated by copper or chlorine in a binder, 5-100 m  thick, a grid electrode 6, e.g. of gold-plated tungsten wires 10-30 m diameter, 50-100 m  mesh, or 10-150 m  diameter, 250-700 m  mesh, a luminescent layer 101, e.g. of zinc manganese fluoride for cathode luminescence, or of silver activated zinc cadmium sulphide in a glass, epoxy or nitro-cellulose binder, 20-200 m  thick, a transparent impedance layer 103, e.g. a plastic or glass film, and an electrode layer 7, e.g. vapour deposited aluminium or silver paint. Since the luminescent layer 101 should be thin, to avoid self-absorption, a transparent dielectric layer may be included between the layers 101 and the photo-conductive layer 5. Variations of the magnitudes and phases of the voltages V1 and V2 enable a positive, a negative, or an intermediate (U-shaped) response characteristic to be obtained.
Patent GB-673327-A (GB)
Title: Process for the manufacture of nitrate-containing calcium cyanamide by treatment of calcium cyanamide with nitric acid solution
IPC: C05C5/04
Filed: 1950-08-24
Abstract: Nitrate-containing calcium cyanamide is prepared by treating calcium cyanamide with nitric acid, the acid being sprayed in finely divided form and added in stages so that the temperature does not exceed 50 DEG C. the final product, perferably containing not more than 2.5 per cent nitrate content, may be pressed or granulated.  Commercial acid of 50 per cent nitrate acid content may be employed whereby enough water for the hydration of the lime is provided.ALSO:Nitrate-containing calcium cyanamide is prepared by treating calcium cyanamide with nitric acid the acid being sprayed in fully divided form and added in stages so that the temperature does not exceed 50 DEG C.  The final product preferably containing not more than 2.5 per cent nitrate nitrogen, may be pressed or granulated. Commercial acid of 50 per cent nitric acid content may be employed whereby enough water for the hydration of the lime is provided.