baber/WOPTO huggingface dataset:
Patent GB-254835-A (GB)
Title: Improvements in or relating to clips or equivalent devices for use in connection with the manipulation and drying of photographic films
IPC: G03D13/10
Filed: 1925-05-05
Abstract: 254,835. Oldfield, Ltd., J. & R., and Oldfield, R. A. May 5, 1925. Clips, sheet-metal.-A clip for attachment to the end of a roll film to facilitate handling during de velopmert and drying, end comprising two relatively movable spring limbs a, one of which has points d adapted to penetrate the end of the film and to enter depressions e formed in the other limb, is characterized in that these depressions are externally of rounded or domed formation so that they will not damage an adjacent film when several films are under treatment. The clip may be formed from a strip of metal bent into U shape, the limbs a being cranked, and each being formed with a T-headed extension b or c. One of the extensions has its centre portion cut away to accommodate the cranked neck of the other. The extensions are separated to permit insertion of the film by pressing the limbs a towards each other. Several such clips may be perforated as at i so that they may be threaded on a rod serving as a suspension for the films. Other clips are weighted, as by a cylinder of lead g, and are attached to the lower ends of the film to impart tension thereto.
Patent GB-213451-A (GB)
Title: Improvements in and relating to gas combustion chambers employed in connection with steam generators
IPC: F23C99/00
Filed: 1923-05-01
Abstract: 213,451. Forsyth, E. May 1, 1923. Gaseous-fuel furnaces.-A steam boiler 9 is heated by the products of combustion of blast furnace gas supplied from a conduit 16 to ports 20 in the front wall of the combustion chamber 6 in which ports the gas is mixed with hot air supplied from side passages 21, 22, 26, 27 in the walls of the combustion chamber. Air enters the passages from a space 25 between the boiler and combustion chamber. The mixture of gas and air entering the ports 20 is directed downwardly, the floors of the ports being inclined as shown with this object in view. The roof 10 is inclined downwardly towards the rear. The gassupply trunk 18 is provided with cleaning-holes 28. Ports 30 are provided beneath the ports 20 to supply coke oven gas if desired. The air supply passages may be replaced by a single central passage leading to the fuel-supply ports.
Patent GB-1380951-A (GB)
Title: Cholestane derivatives and processes for their preparation
IPC: C07C/
Filed: 1972-03-13
Abstract: 1380951 Cholene-24-carboxylates ROUSSEL UCLAF 13 March 1972 [11 March 1971] 11682/72 Heading C2U The invention comprises compounds of formula wherein R is alkyl and rings A and B may have any of the structures indicated in the following scheme which shows their interconversions, all of which are effected by conventional methods: Compounds I (3-oxo-#<SP>4</SP>) are prepared from the corresponding 4,5#-dihydro-3α-ols ols by 3-oxidation followed by 4,5-dehydrogenation which may be effected via 3-oxo-4#-bromo- 5#-hydro and 3(=N.NHR<SP>1</SP>)-#<SP>4</SP> intermediates (where R<SP>1</SP> is H, alkyl, aryl or carbamoyl). Compounds I (3-oxo-#<SP>4,6</SP>) are prepared from the corresponding #<SP>5</SP>-3#-ols by dehydrogenation. Compounds I (3-acyloxy-#<SP>3,5</SP> and -#<SP>3,5,7</SP>) are convertible into 3-hydroxy-#<SP>5</SP> and -#<SP>5,7</SP> compounds as described in Specification 1,380,952. Methyl 3α - hydrozy - 5# - cholane - 24- carboxylate (VI) is prepared from 3α-acetoxy- 24,24 - diphenyl - 5# - chol - 23 - ene (III) by the sequence: III -# its ozonide -# 3α- acetoxy - 24 - nor - 5# - cholan - 23 - al (reversibly convertible to its dimethyl or ethylene acetal) -# methyl 3α - hydroxy - 5# - chol - 23 - ene - 24- carboxylate -# VI. Compound VI is alternatively prepared from a 3α-acyloxy-5#-cholan-24-oyl chloride (II) by the sequence II -# 3α-acyloxy-24-diazomethyl - 5# - cholan - 24 - one -# 3α - acyloxy- 5# - cholane - 24 - carboxylic acid (or alkyl ester thereof) -# 3α - hydroxy - 5# - cholane - 24- carboxylic acid -# VI. Compounds II and III are said to be producible from lithocholic acid by known methods.
Patent GB-1504244-A (GB)
Title: Laminar flow temperature sensors
IPC: G01K11/00
Filed: 1977-03-18
Abstract: 1504244 Measuring temperature; measuring viscosity NORMALAIR-GARRETT (HOLDINGS) Ltd 18 March 1977 [24 March 1976] 11861/76 Headings G1D and G1S Temperature, e.g. within a furnace 27, is measured by passing a constant mass-flow of gas through a non-circular cross-section capillary heat exchanger 12 and monitoring the pressure drop 26 across the capillary which results from the viscosity-temperature dependence of the gas; the capillary may be of metal or ceramic.
Patent GB-720940-A (GB)
Title: Improvements in or relating to spark-extinguishers and/or arresters
IPC: F01N3/06
Filed: 1953-04-09
Abstract: 720,940. Spark arresters. AKTIEBOLAGET B. A. HJORTH & CO. April 29, 1953 [Sept. 23, 1952], No. 11867/53. Class 25. A spark arrester for an internal combustion engine comprises a cylindrical casing with an axial inlet at one end to be connected to the engine exhaust and an axial outlet at the other end, guide blades within the casing to give the gases a rotary motion and one or more partitions down stream of the guide blades and forming, with the wall of the casing, annular pockets opening towards the guide blades. A cylindrical casing 1 is connected through a conical part 2 and an inlet 3 to the exhaust pipe of an internal combustion engine. Guide blades 6, Fig. 3, mounted on concentric sleeves 4, 5, impart a rotary motion to the gases. The inner sleeve 4 is closed at its up-stream end 7. Two partitions 8, each consisting of a frustum of a downwardly directed cone, with its smallest diameter less than the diameter of the sleeve 5, form two annular pockets 9 opening upstream. A second guide-blade assembly 10 and a third partition 11 are provided downstream of the partitions 8, and an outlet pipe 12 projects a short distance into the casing.
Patent GB-144061-A (GB)
Title: Improvements in and connected with windows and the like
IPC: E06B3/52
Filed: 1919-05-12
Abstract: 144,061. Hawes, A. H. May 12, 1919. Hinged and pivoted articles, stays for. - The stay k of a casement capable of moving both inwards and outwards is provided with a downwardly-projecting pin l which engages with one of a series of holes in a plate on the window sill.
Patent GB-398580-A (GB)
Title: Improvements in or relating to balls for tennis and the like games and the manufacture thereof
IPC: A63B39/06
Filed: 1932-04-26
Abstract: 398,580. Balls for games. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, and KENWARD, L. V., St. James's House, St. James's Street, both in London. April 26, 1932, No. 11941. [Class 132 (ii).] A covering for inflated or inflatable balls for tennis and the like games is provided by the assembly on an adhesive surface of substances in suitably divided form, the adhesive surface being formed by an adhesive, which may be rubber, rubber solution or latex, carrying substances suitable for the production of the necessary physical characteristics, the adhesive being one which sets or otherwise changes its state by suitable treatment such as heating or vulcanization. The adhesive may be guttapercha, Balata, celluloid, cellulose, varnish, resins, linseed oil, glue or gelatin and may be applied to the surface of the ball or to textile material to be applied to the ball. The substances incorporated in the adhesive may be sulphur with or without zinc oxide or other ingredients used in the vulcanization of rubber. The coating material may be powdered metal, cork dust, wood flour, paper, fibre, granulated substances, comminuted cotton or flock singly or in admixture and may be such as serve to reduce the permeability of the ball.
Patent GB-552713-A (GB)
Title: Manufacture of yeast-growth promoting substances
IPC: C12P25/00
Filed: 1941-09-17
Abstract: 552,713. Pantothenic acid and related compounds. ROCHE PRODUCTS, Ltd., BERGEL, F., MORRISON, A. L., HINDLEY, N. C., and MOSS, A. R. Sept. 17, 1941, Nos. 11943/41 and 11313/42. [Class 2 (iii)] Pantothenic aldehyde-acetal is prepared by condensing α-hydroxy-##-dimethyl-γ-butyrolactone with an acetal of #-aminopropionaldehyde. Hydrolysis of this compound or of the reaction product containing it under mild acidic conditions yields a water-soluble component of aldehydic nature which exhibits growth promoting properties, and which on treatment with hydrogen peroxide in the presence of calcium hydroxide, yields calcium pantothenate. The preferred mild acid hydrolyzing agent is oxalic acid, and if the hydrolysis with this acid is carried out simultaneously with the oxidation, calcium pantothenate may be isolated by treating the reaction product with calcium carbonate. Use of an optically active lactone as starting material results in the formation of an optically active pantothenic acid. In examples (1) α-Hydroxy-##-dimethl-γ- butyrolactone and #-aminopropion-aldehydediethyl acetal are reacted in methyl alcohol solution to give pantothenic aldehyde-diethyl acetal. This compound on hydrolysis with oxalic acid at room temperature produces a growth-promoting substance which on oxidation with hydrogen peroxide in the presence of calcium carbonate forms dl-pantothenic acid. (2) Pantothenic acid diethyl acetal prepared as in example (1) are treated with oxalic acid and hydrogen peroxide and calcium carbonate added to the reaction product to produce calcium dl-pantothenate. (3) d(-)-α-hydroxy- ##-dimethyl-γ-butyrolactone is treated as in example (1) to produce corresponding products which are optically active. (4) As in example (2) using optically active materials.
Patent GB-614442-A (GB)
Title: Improvements in or relating to electrically driven pumps
IPC: F02M37/10
Filed: 1946-04-18
Abstract: 614,442. Centrifugal pumps. REID, R. A. S April 18, 1946, No. 12037. [Class 110 (i)] [Also in Group XXXV] An electrically-driven pump comprises an induction motor and pump adapted to be mounted in a tank 4, the motor 7 being arranged vertically above the pump 1 and a communication 17 between the pump 1 and the motor 7 is arranged to flood the motor while pumping is taking place. Provision is made to prevent the liquid from returning to the pump when the motor is stopped and the liquid is retained in the motor casing so that the lubrication and cooling of the motor is independent of the level of liquid in the tank and is effective for a period if the motor is kept running after the tank is empty and the pump dry.
Patent GB-521435-A (GB)
Title: Improvements in or relating to piezo-electric devices
IPC: H04R17/00
Filed: 1939-04-21
Abstract: 521,435. Piezo-electric instruments. BRUSH CRYSTAL CO., Ltd. April 21. 1939, No. 12039. Convention date April 22, 1938. [Class 40 (iv)] [Also in Group XL] Fig. 3 shows a piezo-electric crystal unit 1a mounted at three corners between rubber plates 3 clamped between metal cover plates 5, the fourth corner which is free to vibrate being attached to a wire 4 extending through flexible sealing 9 in the upper cover plate 5'to the diaphragm of a loud-speaker. A central rigid plate 2 has an extension 2b forming a support for the terminals 7. Fig. 10 shows a gramophone pick-up in which the crystal unit of trapezoidal shape is held at one edge between yielding plates 29 and has its opposite edge clamped to a flexible torsion shaft 32 which is mounted in sealing gaskets 36 and carries a stylus arm 34.
Patent GB-898386-A (GB)
Title: Web-roll changing mechanisms for winding machines
IPC: D01G27/04
Filed: 1960-04-05
Abstract: 898,386. Winding webs.. CAMERON MACHINE CO. April 5, 1960 [June 19, 1959], No. 12053/60. Class 100(1) A web-roll changing mechanism for a winding machine having winding means adapted to turn a rewind core by frictional coaction with the latter's peripheral surfaces, a pair of load arms 98 for carrying a rewind core 30 from a core-receiving position to a core-winding position and a pair of unload arms 62 for carrying a rewind roll 32 from a pick-up position in the machine to a rewind-roll delivery position, is characterized in that a filled rewind roll in the pick-up position is substantially spaced from the winding means free of the frictional coaction with the latter and includes filled rewind roll shifting means ssparate from the load and unload arms, for shifting a filled rewind roll from core-winding to pick-up position. The arms 62 are mounted on a shaft 52 rocked by an arm 54 connected by a link 56 to a crank 58 on the shaft of an electric motor, not shown. The arms 62 have slots 64 to receive the bearings of a rewind roll 32 when winding is complete. A roller 74 of yieldable material driven by a roller wheel 236 presses a glue line 266, applied by a brush 106, into contact with the roll periphery. The load arms 98 are carried on a tubular shaft 86, Fig. 2 (not shown), rocked about the shaft 52, Fig. 1, by an arm 94 connected by a link 96 to a crank 92 on the shaft on an electric motor (not shown), such that a core 30 is moved from a core-receiving position as shown in Fig. 1 to winding position, Fig. 11 (not shown). During winding a rider roller 36, Fig. 1, carried by carriages 40 presses a roll being wound on the core 30 into engagement with winding drums 28, 34. The carriages 40 are raised and lowered by a reversible electric motor (not shown). The carriages 40 - are connected by rods 160 to lifting cradles 140 which are raised and then lowered to deposit a wound roll in the arms 62 when they are swung inwardly to the pick-up position Fig. 10 (not shown). A gluing roller 212, Fig. 1, applies glue from a trough 188 to each core 30 while in the arms 98 before they are moved to winding position, such, that it adheres to the cut end of the web W cut by a knife 104 when the web is deflected towards the knife 108 by a roller or bar 176 carried by the carriages 40. The sequence of operations is controlled by a control circuit, Fig. 14 (not shown) having limit switches which are actuated by the cranks 58 and 92, Fig. 1, lugs on the carriages 40, and on one of the cradles 140. A limit switch having contacts LSIA and LSIB, Fig. 3 (not shown) is actuated by a lug 260 to commence the sequence, when the roll being wound is complete, thereby causing upward movement of the carriages 40, Fig. 2.
Patent GB-263017-A (GB)
Title: Improvements in or relating to filters for petrol and other liquids
IPC: B01D35/00
Filed: 1926-05-10
Abstract: 263,017. Blackman, A. May 10, 1926. Filters having sheet filtering - materials. - An additional filtering partition 17 of paper, asbestos, felt or textile or other fibrous material, is provided in a filter for petrol &c. of the type described in Specification 235,812 which comprises essentially a casing 1 with lower inlet 11, upper outlet 13, gauze or textile filters 16 and a perforated conical partition 20 covering a sump with drain cocks 8. The filtering member 17 is cup-shaped and has an outer protector 18 of metal gauze or wire mesh. The cone 20 may be attached to the filter 17 or the protector 18. A spring 22 holds the filter members in position. The filter member 17 may be in the form of a dome and may have a protector 18 on each side.
Patent GB-284901-A (GB)
Title: Improvements in and relating to wearing apparel
IPC: A41D27/14
Filed: 1927-05-05
Abstract: 284,901. Bott, H. E. May 5, 1927. Leggings. - A legging comprises an unshaped sleeve a of waterproof material adapted to be drawn over the boot or shoe b on to the trousers to extend above the knee and to be tastened by a band c of of elastic which passes around the leg above the knee. An elastic strap d adapted to engage a trouser's button may be such as tapes connecting the leggings and passing over tively, additional supports such as tapes connecting the leggins and passing over the shoulders or provided with hooks adapted to engage the trouser's pockets may be used. A lining of rough fabric or one or more rubber rings with a roughened surface may be also used to support the legging. At the lower end the legging may be hooked to the hoot and lace at the instep. In a modification, the legging may extend to the thigh and be provided with an elastic insert at its upper end. The lower end may be thickened to prevent too great displacement due to rubbing between the two leggings in wear. Ventilation holes may be provided.
Patent GB-1454462-A (GB)
Title: Mechanical watch movement
IPC: G04B19/25
Filed: 1974-03-19
Abstract: 1454462 Watch keyless mechanisms; calendar watches A SCHILD SA 19 March 1974 [23 March 1973] 12166/74 Heading G3T In a mechanical watch movement having a stem 7, a pull-out piece 9 linked to the stem, and a castle wheel 6 movable on a square portion of the stem and co-operating with a crown wheel 11 when the stem is in an (inner) winding position as shown in Fig. 4, an intermediate wheel 3 which is able to be driven by the castle wheel 6 in at least one stem position is mounted on an arm 4a of a control lever 4 which is pivotally mounted at 5 on a movement plate 1, the lever 4 being biased anti-clockwise by a spring 24 and having a resilient arm 4c engaging a groove of the castle wheel 6. As described the stem has an outer, hand-setting position Fig. 1 (not shown) in which the castle wheel drives the wheel 3 and thus a minute wheel 2 with which the wheel 3 is brought into mesh by clockwise rotation of the lever 4. This rotation, against the spring 24, is produced by engagement of a beak 14 of the pull-out piece 9 with the arm 4c which is deflected so that a protrusion 4e on that arm engages the opposing edge of the rigid arm 4a. The positions of the parts are generally similar in middle, calendar-correction position of the stem Fig. 3 (not shown) but the lever 4 is allowed to move slightly anti-clockwise so that the wheel 3 leaves the minute wheel 2 and meshes with a pinion 28 mounted on a bridge 29. This pinion meshes with a pinion 34 which is mounted on a lever 31 pivoted at 32 on the bridge 29 and frictionally coupled to the lever by a spring 36. Anti-clockwise rotation of the stem thus turns the pinion 28 anticlockwise, in Fig. 4, displacing the lever 31 into a position in which a lug 35a on a washer 35 rotating with the pinion 34 will advance a day star wheel 41. Clockwise rotation of the stem pivots the lever 31 in the opposite direction so that pinion 34 then meshes with a further pinion 38 mounted directly on the bridge 29. The pinion 38 carries a washer 39 with lugs 39a which then advance a date ring 40. In the inner stem position, Fig. 4, the castle wheel 6 drives the crown wheel 11 for winding. As the stem is moved between the outer and middle positions, the beak 14 drops into a recess 4d of the lever arm 4c, allowing this arm to move anti-clockwise - see Fig. 2 - and disengaging the castle wheel 6 from the wheel 3 so that the latter is completely free as it engages or leaves the minute wheel 2. The positions of the stem are determined by a check spring 16 which is integral with a fixed plate 17. Arms 19-21 of this plate retain the pull-out piece 9 and the wheel 3 and lever 4, and provide axial restraint for the wheel 11. Various parts may be omitted if the watch is not a calendar watch or has only a date ring 40.
Patent GB-296798-A (GB)
Title: Improvements in or relating to braking mechanism for aerial machines
IPC: B64C25/44
Filed: 1927-05-06
Abstract: 296,798. Boughton, E. B., Emmott, W., and Brock, D. T., (trading as Automotive Products Co.), and Boughton, E. B. May 6, 1927. Band; fluid-pressure.- Brakes are applied to the landing wheels of aircraft by pressure mainly or wholly produced by, and in propor. tion to, the weight of the aircraft upon the tail skid or other member supporting the rear part of the aircraft on the ground. Means may be provided whereby the pilot may control the pressure, or apply the brakes independently of the tail skid, or cause differential braking of a pair of sheets for steering purposes. Fluid pressure transmission mechanism is described but mechanical transmission may be used. The tail skid b, Fig. 1, is connected through a resilient lost-motion device m, n, o to the piston d<1> of a cylinder d connected by pipes f to the brake cylinders g, reservoir j, pressure indicator k and pilot's control cylinder e, the piston e<1> of which is connected through a, lost motion device n<1>, o<1> to a hand lever c. The brake cylinders g each have opposed pistons g<1> connected to levers g<3>, g<5> connected by a link g<4>, the brake band h being attached to the lever g<3>. The pilot's lever c may be moved to adjust the amount of lost motion in the system or to apply the brakes independently of the skid b. The amount of lost-motion may be such as to prevent application of the brakes by the skid. In an arrangement. Figs. 3 and 4, providing differential braking, separate fluid pressure transmission systems are used for the brakes on the wheels i<1>, the cylinders d being jointly operated by the tail skid b. The pistons e<1> of the control cylinders e are connected respectively by links p to an arm and auxiliary lever s pivoted on the same shaft q as the hand lever c, the arm r and levers c. s being connected by a rod t passing through flared holes in the members c, s. For steering purposes, the lever c is held stationary and the lever s operated to vary the pressure in the two systems.
Patent GB-540720-A (GB)
Title: Improvements in and relating to hydraulic driving mechanism
IPC: B23Q5/26
Filed: 1940-03-20
Abstract: 540,720. Hydraulic-machines. OLAH, G. March 20, 1940, No. 12224/41. Divided out of 540,684. [Class 69 (ii)] [Also in Group XXII] The speed of the tool 74 in a screw-cutting machine is controlled by follow-up mechanism comprising a synchronizing valve 78 which is operated by the tool holder 75 and controls the supply of fluid from a pump 6 to a hydraulic jack 26 ; a screen valve 34 and stabilizator 35 operate as described in Specification 540,719 during forward feed of the tool slide 24 and a reverse valve 109, operating as described in Specification 540,683, reverses the motion of the work spindle 72 on the return stroke of the tool slide 24. The tool holder is slidably mounted in the slide 24 and is spring-loaded in the direction opposite to the direction of feed. A metering valve 36 is set to give a rate of feed slightly smaller than that required by the pitch of the thread and the revolutions of the work-spindle so that, when cutting begins, the tool holder is drawn forward and, through a lever 76, moves the synchronizing valve to the right to increase the supply of fluid to the jack.