baber/WOPTO huggingface dataset:
Patent GB-664191-A (GB)
Title: Improvements in or relating to apparatus for recording and/or reproducing sound
IPC: G11B5/265
Filed: 1949-02-18
Abstract: 664,191. Magnetic sound recording and reproducing apparatus. LORD, F. E. (Svenska Aktiebolaget Gasaccumulator). Feb. 18, 1949. No. 4501/49. Class 40 (ii). An iron core having three legs 10, 11, 12 provides a demagnetizing air gap 13 and a recording and reproducing air gap 16. The legs 11, 12 have similar windings 17, 18 connected in series to terminals 19, 20 for the sound current. A high - frequency current for demagnetizing the steel band record 14, is supplied from a winding 21 directly through the winding 17, while a part of the voltage is tapped off by a tap 22 and supplied through the winding 18. The fields produced in the legs 11, 12 are additive as regards the sound frequency field but are opposed as regards the high-frequency field. The field through the air gap 13 used for demagnetizing is thus the sum of the two component fields, whereas the field through the air gap 16 which is used as a basic magnetizing field for recording is the difference between the fields. Stray magnetic fields imposed on the core produce voltages in the windings 17, 18 which are equal and opposite and so balance each other. Condensers 24, 25 prevent shunting off of the sound frequency current.
Patent GB-621310-A (GB)
Title: Improvements in or relating to insulated lead-through devices
IPC: H01B17/26
Filed: 1947-02-17
Abstract: 621,310. Bushings. PHILIPS LAMPS, Ltd. Feb. 17, 1947, No. 4531. Convention date, March 14, 1944. [Class 36] An insulated lead-through device comprises an insulating body 3 through which the leadthrough conductor 1 passes, said body having a non-circular collar 5 and means, such as threads 7 for securing the device by a nut 9 into an aperture in the wall. The shaping of the collar 5 is such that when two or more lead-through devices are secured adjacent one another, they lock each other against rotation. A raised portion 11 is provided to increase the leakage path.
Patent GB-904468-A (GB)
Title: Improvements in or relating to window lighting fittings
IPC: F21V9/02
Filed: 1960-02-10
Abstract: 904,468. Electric light fittings. COURTNEY, POPE (ELECTRICAL) Ltd., and FRIEDLAENDER, W. H. R. Jan. 31, 1961 [Feb. 10, 1960], No. 4760/60. Classes 75 (3) and 75 (4). An electric lamp or battery of lamps is disposed in a window, the lamp or lamps being movable into and out of a recess in a boundary wall of the window and provided with means co-operating with means provided in the recess to facilitate this movement. In the form shown, a set of tubular fluorescent lamps 1 provided with reflectors 4 which together simulate a Venetian blind, is mounted in a box 2 having translucent panels 3 on opposite faces. The top of the box is fitted with rails 9, similar rails being provided at the top and bottom of the window area and extending into a recess at the side of the window. Rollers 10 are disposed between the rails at the top of the box and rollers 11 on the bottom of the box which co-operate with the rails 9 at the bottom of the window. When not in use, the box can be slid into the recess. The recess may be provided in any of the four sides of the window, suitable locking means being provided to hold the box in place when the direction of movement is vertical. The panels 3 and/or the lamps may be coloured.
Patent GB-1508074-A (GB)
Title: Pressure-regulated sprinkler
IPC: B05B1/30
Filed: 1976-02-06
Abstract: 1508074 Spray producers M DRORI 6 Feb 1976 [19 Feb 1975] 04808/76 Heading B2F [Also in Division F2] An intermittently rotated, pressure-regulated, water sprinkler comprises a head @2 carrying a nozzle 4 and having a housing 20 defining a chamber 22 communicating at one end with the nozzle and having an inlet 26 at the other end, a pressure regulator member 30 movably disposed within the chamber between a ring 28 and a first shoulder 24a defined by circumferentially spaced ribs 24, and pressure sensing means for sensing the pressure at inlet 26 and automatically moving member 30 towards or away from one side of the ring 28 to regulate the pressure of the water reaching the nozzle. The pressure sensing means comprises a piston 34 mounted on a rod 32 and biased, by means including a further rod 36, a member 40 and a spring 44, together with member 30 towards the nozzle 4. An inlet pipe provided with a filter 52 is formed integrally with the housing 20. The nozzle 4 discharges a jet actuating a deflector on an arm which impacts against a member 12 on its return movement to rotate the head.
Patent GB-385778-A (GB)
Title: Universal joint for motor vehicles
IPC: F16D3/44
Filed: 1932-02-18
Abstract: 385,778. Lubricating universal joints. PORSCHE, F., 24, Kronenstrasse, Stuttgart, Germany. Feb. 18, 1932, No. 4855. Convention date, March 14, 1931. [Classes 12 (ii) and 12 (iii).] For lubricating the double universal joint shown, the intermediate member 6, mounted in fixed bearings 10, is provided with peripheral paddles 11, which scoop oil from a reservoir 13, whence it flows through channels 12<1> at the base of the paddles to lateral grooves 15 in the faces of the joint-block recesses, and thence to the interior of the intermediate member and to the space adjoining the spherical endsurfaces 2, 5. The channels 12<1> are so disposed that, even when the joint is stationary, the oil level in the intermediate member 6 can never fall below the broken line 19.
Patent GB-993694-A (GB)
Title: Method of producing printing forms for intaglio printing
IPC: G03F5/20
Filed: 1962-02-08
Abstract: 993, 694. Photomechanical printing. J. GORIG. Feb. 8,1962 [Feb. 8,1961; July 4,1961; Nov. 9, 1961; Dec. 8,1961], No. 4878/62. Heading G2M. A method of making a printing form for intaglio printing by means of a diapositive having an autotypy or like screen comprises combining with the diapositive, when it is transferred to the printing form, a gravure screen consisting of a single series of substantially parallel elements having a transparent component lying between 30% and 60% of the screen area. The autotypy screen may comprise rows of rod-shaped elements, those in successive rows being offset relative to each other. The gravure screen and the diapositive may be copied separately on to a light sensitive carbon tissue which is then transferred to the form. The diapositive may be transferred to the cylinder by an engraving machine and the gravure screen superimposed thereon by an electo-mechanical or electronic process.
Patent GB-415105-A (GB)
Title: Improvements in silencing devices for the exhaust gases of internal combustion engines
IPC: F01N1/18
Filed: 1933-02-17
Abstract: 415,105. Exhaust silencers. GASKIN, H. A., Ash Vale, Royston Road, Bideford, North Devon. Feb. 17, 1933, No. 4978. [Class 7 (ii).] A vane-wheel d, rotated by exhaust flow, is mounted on a shaft f, extending to bearings g located away from the influence of the hot gases passing through the silencer ; brackets j, for the bearings, may be heat-insulated from the silencer casing by interposed packing. The gases enter by the goose-neck passage c described in Specification 304,099, [Class 7 (ii)], a cooling-air passage e, being provided.
Patent GB-108283-A (GB)
Title: An Improved Violin Chin Rest.
Inventor: PINFOLD ARTHUR GOUGH
IPC: G10D3/18
Filed: 1917-04-10
Abstract: 108,283. Pinfold, A. G. April 10, 1917. Chin-rests.-A chinrest is provided with a detachable mute: as shown, the mute 5 is housed in a recess in the rest
Patent GB-1137385-A (GB)
Title: Process for preparing a protected amino acid or amino acid derivative
IPC: C07K1/06
Filed: 1966-02-04
Abstract: 1,137,385. Protected amino acids. AJINOMOTO CO. Inc. 4 Feb., 1966 [4 Feb., 1965; 29 Nov., 1965], No. 5041/66. Heading C2C. The amino or imino groups of amino acids or their derivatives are protected by reacting an ester of an amino acid with t-amyl chloroformate or by reacting an amino acid or ester thereof with t-amyl oxycarbonyl azide, and the resulting product is either de-esterified to free the carbonyl group or reacted with hydrazine to form a hydrazide. The reaction with t-amyl chloroformate may be effected at - 30‹ C. to room temperature in an inert solvent, preferably under substantially anhydrous conditions in the presence of an acid acceptor. The reaction with t-amyl oxycarbonyl azide may be effected at room temperature or above in the presence of a weakly alkaline material and optionally in the presence of an inert hydrophilic solvent. The de-esterification of the products may be effected by hydrolysis with caustic alkali, by hydrogenation with sodium in liquid ammonia or by catalytic hydrogenation. The t-amyl oxycarbonyl azide starting material may be obtained by reacting t-amyl oxycarbonyl chloroformate (obtained by reacting amyl alcohol with phosgene) with hydrazine and reacting the hydrazide formed with sodium nitrite, acidified with acetic acid. The dicyclohexylamine salts of some of the protected amino acids are prepared.
Patent GB-1027333-A (GB)
Title: Improvements in fluid filters
Inventor: JACKSON HAROLD ERNEST
IPC: B01D29/11
Filed: 1962-02-09
Abstract: 1,027,333. Filters for gases (or liquids). TECALEMIT (ENGINEERING) Ltd. Jan. 31,1963 [Feb. 9,1962], No. 5056/62. Headings B1D and B1T. A fluid filter element comprises one or more layers of filter material secured to a support by bent-over edge portions of the latter which grip the filter material. As described the support 1 is formed from a strip of sheet steel having therein a plurality of openings 5 for the passage of the fluid being filtered; the strip is bent to form a cylinder, the ends of the strip being interconnected by lugs 6 on one end engaging the opening 5 adjacent the other end. Pressure is applied to the cylinder to reduce the axial length thereof and so force the central parts 7 of the cylinder outwardly, as shown, or inwardly. Alternatively, the support 1 may be left as a cylinder or the parts 7 may be formed at any stage during the forming of the element. The edges 9 of the support are bent to grip two layers 2, 3 of the filter material which is of foamed material or is, preferably, fibrous and formed of a copolymer of vinyl chloride and acrylonitrile. The filter material is in strip form and is disposed round the support, the ends of the material being attached to each other by adhesive or by application of heat.
Patent GB-562828-A (GB)
Title: Apparatus for developing sensitised photographic layers
IPC: G03D7/00
Filed: 1943-03-30
Abstract: 562,828. Photographic developing apparatus. MORSE, S. H. March 30, 1943, No. 5106. [Class 98 (ii)] - Prints are developed by exposing them in the form of stationary rolls in a chamber to a heated source of moist ammonia or other developing gas or vapour, the temperature in the chamber being kept so high that condensation does not occur on the prints, and air being aspirated through the chamber after development by opening a damper at the top of the chamber leading to a ventilating pipe. The developing chamber may comprise a support for the prints a tray for developing liquid below the support, means for delivering a regulated flow of developing liquid to the tray, an upper damper leading to the ventilating pipe, and, if desired, also a lower damper near the tray for admitting air to the chamber for aspiration. The apparatus shown comprises a cabinet 1 of square, rectangular, or circular cross-section, having walls 16 of absorbent material such as cement, and a hinged or sliding lid 1a which may be of glass to facilitate inspection of the progress of development. The rolled prints 18 are supported on a perforated shelf 20 capable of a limited rocking movement by a hand lever 15. Below the shelf is a tray 8 fitted with an electric or other heater 9, and fed with developing liquid through a drip-pipe 7 receiving the liquid through a regulating valve 5 and glass sight 4 from a storage tank 3, which is provided with a float 3a and a screw-cap 25 through which the indicator 26 of the float projects. An outlet valve 10 for excess liquid is provided, and may deliver continuously into a bottle. For aspirating air through the chamber, manually-operable coupled dampers 11, 13 are provided over apertures in the sides of the chamber, the lower inlet damper opening directly to the air, and the upper outlet damper to a ventilating pipe 13a. The walls 16 may be heated to prevent condensation thereon, as by making them hollow and heating the interspace.
Patent GB-623456-A (GB)
Title: Improvements in or relating to a bearing assembly
IPC: F16C33/64
Filed: 1947-02-21
Abstract: 623,456. Ball bearings. SHAFER, J. E. Feb. 21, 1947, No. 5107. [Class 12 (i)] [Also in Group XXIV] A bearing inner race 22 is secured on its shaft by two pairs of diametrically opposite set screws 35, 37, and 36, 38, at its opposite ends, the diametral planes containing each opposite pair being at rightangles so that tightening the screws tilts the race relative to the shaft (when clearance exists), but maintains it locked in this tilted position. The set screws have serrated ends to bite into the shaft. An outer race 18 has a spherical periphery 19 to permit tilting within a complementary bore 16 in a strap 15. The steel inner race is induction hardened near the ball-track and left soft near the ends. A labyrinth packing is provided comprising channel-shaped retainers 24 and z-shaped flingers 25 pressfitted to the inner and outer races 22, 18.
Patent GB-319342-A (GB)
Title: A process of producing cement
IPC: C04B7/00
Filed: 1929-02-15
Abstract: 319,342. Imai, G. Sept. 21, 1928, [Convention date]. Cements Portland and Roman.-A mixture of calcined rock containing quartz and felspar, and a substance containing large proportions of acidic components such as soluble silica, alumina and iron oxide, is mixed with Portland cement clinker and the whole is intimately mixed and finely ground. Suitable rocks are granite, liparite, quartz porphyrite and diorite, and suitable substances for the second ingredient are weathered tuff, basalt and andesite and artificial substances such as slag. In an example, from 3 to 5 paris of the first ingredient are mixed with from 5 to 3 parts of the second; the mixture is ground at a temperature of about 150 to 200‹ C. and mixed with about 30-40 per cent of Portland cement clinker ; the whole is .then reground.
Patent GB-692921-A (GB)
Title: Improvements in or relating to the production of electrical resistors
IPC: H01C7/04
Filed: 1948-02-20
Abstract: An electrical resistor is formed by coating a non-conductive carrier with resinates of at least two noble metals together with a thinner, one of the metals being substantially non - oxidizable, viz. gold, platinum, rhodium or iridium and another at least partially oxidizable, viz. palladium, ruthenium or osmium, applying heat to evaporate the thinner and reduce the resinates and providing the resulting resistor with means for connection in an electric circuit. Heating may be effected in two stages, i.e. at 200-400 DEG C to precipitate the metals and then at 490-750 DEG C to oxidize ash or residue and to drive off decomposition products.  A series of coatings may be provided. The metals may be so proportioned that the resistor has a zero temperature coefficient; alloys of Au 72 per cent, Pd 28 per cent and Au 25 per cent, Pd 75 per cent are referred to.  The thinners may comprise acetophenone, nitrobenzene, fenchlone and pinene or turpentine.  The connector may be thin strips of copper clamped over bands formed by depositing colloidal silver and heating at 500-600 DEG C.  The resistance unit may be cut into helical form and finally coated with lacquer.  Specifications 14356/01, [Class 82], 436,578, [Group XXXV], and 640,323, and U.S.A.  Specification 1,954,353 are referred to.  The Specification as open to inspection under Sect. 91, refers also to the use of silver as one of the main coating metals.  This subject-matter does not appear in the Specification as accepted.
Patent GB-271557-A (GB)
Title: Improvements in or relating to water level alarms and feedvalve systems for steam generators and the like
IPC: F22B37/42
Filed: 1926-02-24
Abstract: 271,557. Gordon & Co., Ltd., J., and Armstrong, C. H. Feb. 24, 1926. Alarms, high and low water. -In a thermostatic feedwater control system for a boiler, means are provided for indicating the water level whether or not the feed valve sticks. A thermostat lever h is connected by a link g to a member a which is forked and provided with a slot b. A sliding rod d carries a pin e working in the slot b, and is connected by a rod f to the feed-water valve f<1>. A mechanical connector such as a wire l connects the member a to to an indicator n, so that the indicator is actuated in any case. If the valve sticks, the two pjarts c, d slip relatively to one another. In another form, the two parts of the slip. device may be a sleeve and an internal sliding rod, and in another form the pin e may be directly connected to the thermostat lever. The feed-water valve may be above or below the thermostat. The movement of the thermostat may complete the circuit of a glow lamp, electric horn, or the like. According to the Provisional Specification, the thermostat may be replaced by a float and the slipping device by springs or other elastic means.
Patent GB-637703-A (GB)
Title: Series-parallel control systems for electric motors
IPC: B60L15/04
Filed: 1948-02-24
Abstract: 637,703. Control of D.C. motors. FORGES & ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE JEUMONT. Feb. 24, 1948, No. 5402. Convention date, April 2, 1947. [Class 38 (iii)] In a series-parallel control system the group - ing of the motors is automatically changed when the armature voltage is being reduced, for example when passing'from a parallel to a series connection. The transition, which is effected by the bridge method,. is initiated by re-introducing starting resistors R1 and R2, and, when the voltage across armature I equals that across resistor R2, a contactor C is closed. The resistors R1 and R2 are then fully inserted, afterwards being disconnected from the supply-lines to afford full series connection of the armatures. The closure of the contactor C may be controlled by a relay which is responsive to zero voltage across points A and B, or to a reversal of polarity of such voltage. A differential relay may be used which operates when voltages V1 and V2 are substantially equal. The system may comprise more than two motors and involve more than two groupings thereof. Specifications 635,016 and 637,700 are referred to.
Patent GB-525407-A (GB)
Title: Improvements in or relating to fire protection devices for motion-picture projectors
IPC: G03B21/18
Filed: 1939-02-18
Abstract: 525,407. Safety shutters for kinematograph apparatus. BOSCH GES., R. Feb. 18, 1939, No. 5442. Convention date, Feb. 23, 1938. [Class 97 (i)] The frictional surface surrounding the centrifugal masses of a governor is held, by a load, eccentric to the governor axis when the apparatus is at rest ; is movable in a direction at right angles to the axis to become concentric therewith when the masses revolve ; and in said displacement moves the safety shutter covering the film gate to the open position. In the form shown, a shaft 2 carries a cam (not shown) which operates an arm 7 engaging the bolt 8 at the bifurcated end 9 and carrying the feed claw 10. A disc on the same shaft carries centrifugal masses 15 pivoted at 16 and carrying brake blocks 17. The ring 14 surrounds the masses and carries a lug pivoted about the bolt 8 and the arm 11 carrying the shutter 12 and acted on by a loading spring 13. As the masses 15 fly outward they act on the ring 14 and pull it concentric with the shaft 2 and thereby open the safety shutter.
Patent GB-650574-A (GB)
Title: Improvements in or relating to a power-driven tong for screwing or unscrewing pipe sections
IPC: E21B19/16
Filed: 1948-02-24
Abstract: 650,574. Screwing or unscrewing pipe sections. BYRON JACKSON CO. Feb. 24, 1948, No. 5458. Convention date, Dec. 30, 1947. [Class 83 (iii)] A power-driven tong for screwing or unscrewing pipe sections comprises a frame 11 having rotatably supported thereon a ring 16 on which is mounted a carrier 83, a fixed pipe-gripping jaw 82 being fixed to the carrier by means of a pin 92 and a movable pipe-gripping jaw 81 being pivoted to a lever 98 which is pivoted to the pin 92 so that when the ring 16 is turned relatively to the carrier 83, the jaw 81 is moved to engage or disengage the pipe. The lever 98 extends between a pair of drive elements 99, 100 fixed on the ring 16. Rotation of the carrier 83 is retarded by means of a brake band 110 fixed to the frame 11. The latter is provided with an entrance slot 28 and the ring 16 with a side opening 17. A guard 128 is pivotally mounted on the frame 11 and has a finger 147 which contacts the pipe 80 to rotate the guard as the tong approaches the pipe, and as the pipe passes into the slot 28 and opening 17, the guard moves to the closed position where it is retained by a spring 145. The ring 16 is supported by a plurality of rollers 20 and is rotated by means of a chain 35 driven from a driving sprocket 38 which is driven at high or low speed, according to the position of shifter levers 69, by means of an air motor 71. In operation, the high speed drive to the sprocket 38 is engaged and a valve 75 operated to admit air under pressure to the motor 71. The ring 16 then rotates in clockwise direction to move the jaw 81 to grip the pipe. Continued rotation of the ring 16 rotates the carrier 83 therewith as a unit thereby turning the pipe. The screwing action continues until the motor 71 stalls under overload. The low speed drive to the sprocket 38 is then engaged and the pipe further rotated until screwing is complete. The valve 75 is then operated to cut off the supply of air to the motor 71. The motor is then reversed and a knob 127, Fig. 16, on the stem of a positioning valve 113 depressed. The valve 113 and conduits 123, 124 provide a byepass around the valve 75 so that air under pressure is supplied to the motor 71. The ring 16 is thus driven in a counterclockwise direction to retract the jaw 81 from the pipe. Rotation of the ring 16 continues until a roller 119 on the stem of the valve 113 rides up a cam block 120 carried on a sprocket 33 when the supply of air to the motor 71 is cut off and the motor stops with the side opening 17 in the ring 16 substantially aligned with the entrance slot 28 in the frame
Patent GB-525365-A (GB)
Title: Improvements in sensitized photographic emulsions
IPC: G03C1/29
Filed: 1939-02-20
Abstract: 525,365. Sensitizing photographic emulsions. KODAK, Ltd. (Eastman Kodak Co.). Feb. 20, 1939, No. 5571. Drawings to Specification. [Class 98 (ii)] A supersensitizing effect is obtained in a silver halide emulsion by the use in conjunction of (a) a pseudocyanine dye and a hemicarbocyanine or hemidicarbocylanine dye or (b) an # - oc <SP>1</SP>-carbocyanine dye and a hemicarboxyanine or hemidicarbocyanine dye. The pseudocyanine dye may be a 1:11-dialkyl-2:21- cyanine dye, a 2:1<SP>1</SP>-dialkylthia-2<SP>1</SP>-cyanine dye a 2:1<SP>1</SP>-dialkyl-3:4-benzthia-2<SP>1</SP>-cyanine dye, or a 2:1<SP>1</SP>-dialkylselena-2<SP>1</SP>-cyanine dye, in which the 1-, 1<SP>1</SP>- and 2-alkyl groups are preferably of the formula C n  H 2n+1  wherein n represents a positive integer of from one to four. The hemicarbocyanine or hemidicarbocyanine dye preferably contains a benzoxazole, benzthiazole, benzseleazole, #-naphthothiazole, α-naphthoxazole or #-naphthoxazole nucleus. Salts such as halides, p-toluenesulphonates or perchlorates may be used. The α α<SP>1</SP>-carbocyanine dye may be a 1:1<SP>1</SP>-dialkyl-2:2<SP>1</SP>-carbocyanine dye, a 2:2<SP>1</SP>- dialkyl-8-alkylthiacarbocyanine dye, or a 2:21- dialkyl alkyl-3:4:3<SP>1</SP>4<SP>1</SP>-dibenzothiacarbocyanine dye. Numerous examples of hemicarbocyanine and hemidicarbocyanine dyes and also of mixtures giving a supersensitizing effect are given. The nuclei of the dyes can carry substituents such as alkyl, alkoxy, or chloro groups. One or more of either or both classes of dyes may be used. Silver bromide or chloride emulsions with binders such as gelatin, resinous substances, or cellulose-derivatives may be used. Specifications 498,031, 498,289, 498,290, 498,291 and 515,145 are referred to.