baber/WOPTO huggingface dataset:
Patent GB-134033-A (GB)
IPC: G02B23/08
Abstract: 134,033. West, E. Oct. 24, 1918. Periscopes. - A periscope comprises upper and lower sections, the lower section constituting a complata periscope which remains intact and fully operative in the event of accident to the upper section. As shown, the lower section 10 carries a reflector 17 in a casing 12 having a lens or window 16. The reflector 17 is normally vertical and is hinged so that it may be lowered into an inclined position under the control of a flexible device 18 connected to a piston in a chamber 22 and operated by a ring or other member 23. The casing 12 has secured to it a sleeve 27 carrying a glass plate 28 which prevents water from entering the lower section when the upper section becomes detached. The upper section has a glass plate 34, a reflector 31, and a lens or window 32. The sections are connected by means of a breakable ring 41 which is secured to the upper section between a conical flange 40 and a ring 43 locked by a ring 44, and to the lower section by a flanged ring 38. If the upper section is hit by a shell and is carried away, the breakage occurs in the ring 41, and, by lowering the reflector 17, the use of the periscape may be continued.
Patent GB-1077025-A (GB)
Title: Improvements in or relating to automatic locking devices for fluid-pressure operated rams
Inventor: KING HENRY VERNON
IPC: F15B15/26
Filed: 1963-05-04
Abstract: 1,077,025. Fluid-pressure apparatus. PLESSEY-U.K. Ltd. April 21, 1964 [May 4, 1963], No. 13441/63. Heading F1P. Automatic locking of a fluid-pressure operated piston (4) Fig. 1 (not shown) at either end of its stroke is effected by engagement of axially spaced balls (11) located within bores (9, 10) near one end of a sleeve (13) projecting into the hollow rod (3) of the piston (4) and secured at its other end to a cylinder end cap (5) with axially spaced shoulders (7, 8) within said rod (3) and the balls are unlocked by the cam action of a bar (13) carried by a double acting auxiliary piston (18) within a cylinder (19) secured to said end cap (5) and having both sides connected by ducts (20, 21, 22) to opposite ends of the main cylinder. Cams (12c) Fig. 2 (not shown) carried if the unlocking bar (15) are formed on collars (12) which are urged against the action of a spring (14) to the unlocking position by stops (16, 17) which are axially displaced when fluid-pressure is applied to one or other side of auxiliary piston (18) to which said bar (15) and stops (16, 17) are fixed. The auxiliary piston is displaced in the direction opposite to that in which the main piston is to be displaced.
Patent GB-465983-A (GB)
Title: Improvements in and relating to the formation of esters
IPC: C11C3/00
Filed: 1936-05-12
Abstract: <PICT:0465983/IV/1> Esters are formed from a carboxylic acid and a monohydric alcohol, particularly from reactants whose boiling points differ by 50 DEG  F. or more, by passing the more volatile reactant in the form of superheated vapours into the other.  Relatively non-volatile catalysts may be present.  The reaction mixture is maintained at such a temperature and the quantities so regulated that unchanged more volatile reactant containing a small proportion of water is continuously removed.  The water is separated and the dried reagent returned.  The more volatile reactant, e.g. the alcohol, is pumped from a tank 1 through a coil 3, where it is heated to about 35 DEG  F. or more above its boiling point, to a container 8 for stearic or other high boiling acid and catalyst.  The container is steam jacketed and may contain a heating coil.  The vapours evolved are led by a line 14, which has an insulating or heating jacket, through a condenser 17 to a tank 18 from which the condensate is passed through a heating coil 34 to a fractionating tower 21.  If the alcohol is less volatile than water, water vapour is withdrawn through line 22 and a partial condenser 40<1>, which provides reflux liquid, to line 23. The alcohol is returned by lines 25, 27 to tank 1.  If the alcohol is the more volatile, it passes by lines 22, 28 to tank 1 and the water is drained through line 32.  When a sufficiently small amount of acid remains in the container 8, the vapour stream is stopped and the ester distilled through line 39 to condenser 40 by passing superheated steam through the container jacket, or the ester and catalyst withdrawn through line 41.  In examples, superheated methanol vapours, e.g. at 250 DEG  F., are passed into a molten mixture of stearic acid and sodium bisulphate maintained at 220 DEG F., and acetic acid vapours at 275 DEG  F., are passed into molten octadecanol and potassium bisulphate.  Reference has been directed by the Comptroller to Specification 336,276.
Patent GB-456421-A (GB)
Title: Improvements in hooking-on frames or tables for preparing fabrics for cutting
IPC: B26D7/01
Filed: 1935-05-08
Abstract: 456,421. Folding fabrics. DONIGER, J. E., Sherborne Street, Cheetham, Manchester. May 8, 1935, No. 13520. [Class 42 (ii)] A hooking-on frame or table for fabrics is provided with hooks a of different lengths carried in a common bracket d and spaced apart at distances equal to the differences in dimension in articles being made, and arranged in order of length. The hooks a may be secured in the bracket d by screws c and may have their ends turned up. A set of hooks may be provided at one or both ends of the table.
Patent GB-847527-A (GB)
Title: Improvements in or relating to colour photography
Inventor: KELLER ERNST
IPC: G03C7/29
Filed: 1957-04-29
Abstract: Disazo dyestuffs for use in the silver-dyebleach process of colour photography (see Group XX) have part X of the formula of Specifications 711,233 [Group XX] and 711,232 varied mainly by the addition of further alternatives, and part A consisting of the residue of a diazotised amino aryl carboxylic alkyl ester of which the alkyl group contains at least 5 carbon atoms.  The cyan dyestuffs are prepared by first diazotising the n pentyl, n octyl, n decyl or n dodecyl ester of an amino phenoxy benzene carboxylic acid and coupling with 1 amino 2 methoxy naphthalene 6 sulphonic acid.  After further diazotisation coupling may be effected with 1 acetylamino or amino or hydroxy naphthalene 3 : 6 or 2 : 4 sulphonic acid. Alternatively, X may be any of the following groups: benzoyl amino, di(chlorophenyl) acetyl amino, chlorophenyl p  propionyl amino or di-chlorophenoxy acetylamino.  Specifications 397,159, 397,188 and 490,451 also are referred to.
Patent GB-1470397-A (GB)
Title: Magnetic separators
IPC: B03C1/14
Filed: 1974-03-27
Abstract: 1470397 Magnetic separators BERGER MASCHINENFABRIKEN GmbH & CO 27 March 1974 [28 March 1973] 13612/74 Heading B2J A magnetic separator comprises a horizontally disposed rotatable drum 1 associated with external fixed magnets 4 which extend over approximately half the drum's circumference. Granular material is fed into the interior of the drum, within the range of the magnets 4, by means of a screw conveyor (7) Fig. 1 (not shown) or a stationary chute. Magnetic particles in the material are attracted to the inner wall of the drum and are carried upwardly as the drum rotates, falling off the wall into a trough (10) when they leave the influence of the magnets, the magnetic material being separately discharged from the drum by means of a discharge screw conveyor 8 within the trough. Helically extending ribs 2 may be provided on the inner wall of the drum 1 which is also furnished with an adjustable divider 13 to prevent non-magnetic components from entering the trough, and with an adjustable scraper 16 to regulate the distribution of the granular material throughout the length of the drum.
Patent GB-1346752-A (GB)
Title: Electrographic image transfer process
IPC: G03G13/16
Filed: 1972-03-23
Abstract: 1346752 Transferring developed electrographic images EASTMAN KODAK CO 23 March 1972 [29 March 1971] 13618/72 Heading B6C [Also in Division G2] A method of transferring an electrographic image which has been developed with a liquid developer comprising a hydrophobic carrier liquid from an image-bearing surface to a receiving sheet comprising a hydrophilic swellable receiving layer carried on an electrically insulating support, comprises moistening the receiving layer to cause it to swell and to increase the electrical conductivity thereof, bringing the image bearing surface (still wet with carrier liquid) and the moistened receiving layer into face to face contact and during such contact electrically biasing the system to effect migration of the developed image. The biasing may be effected by connecting the receiving layer to a potential source or by electrostatically charging the image-bearing surface prior to the contacting. The receiving layer may be chosen from gelatine (e.g. the gelatine layer of an exposed and developed silver halide photographic film), proteins, polysaccharides, polyvinyl compounds and acrylamide polymers. The moistening liquid may be water or an alcohol having from 1 to 5 carbon atoms.
Patent GB-1090115-A (GB)
Title: Mannich bases of rifamycin sv
Inventor: MAGGI NICOLA
IPC: C07D498/08
Filed: 1964-04-02
Abstract: The invention relates to 3-amino-methyl derivatives of rifamycin SV having the general formula <FORM:1090115/C2/1> wherein B is <FORM:1090115/C2/2> or <FORM:1090115/C2/3> wherein R is H or C1- 8 alkyl, hydroxy C1- 8 alkyl, carboxy C1- 8 alkyl o cycloalkyl, X is methylene, ethylene, -CH2O- or -CH2NH- and R11 and R111 each represent H, C1- 8 alkyl, OH or carboxy; and the N-oxides of said compounds.  The compounds are produced by treating rifamycin S with formaldehyde and a compound of formula HB, wherein B is as defined above, and contacting the obtained aminomethyl derivative of rifamycin S with an aqueous solution of ascorbic acid to reduce the quinone system to the hydroquinone system of the desired rifamycin SV derivative.  The N-oxides are obtained by treating the 3-amino-methyl derivative of rifamycin SV with aqueous hydrogen peroxide. Therapeutic compositions comprise the above 3-aminomethyl derivatives of rifamycin SV or their N-oxides and a carrier.  They have broad spectrum antibacterial activity and may be used orally.
Patent GB-1222431-A (GB)
Title: Improved fibre-forming polyamides
IPC: C08G69/02
Filed: 1968-03-21
Abstract: 1,222,431. Polyamides. DEUTSCHE RHODIACETA A.G. 21 March, 1968 [21 March, 1967; 27 Sept., 1967], No. 13697/68. Heading C3R. Homopolyamides or copolyamides contain. ing up to 20 wt. per cent of the minor monomer are modified to improve their affinity for acid dyestuffs by adding 1 to 5 wt. per cent of an alkylene carbonate to the monomer(s) before condensation. The use of such carbonates in the anionic polymerization of lactams is acknowledged and such processes are disclaimed. It is suggested that chain lengthening is effected by esterification of carboxyl groups by the corresponding glycol. To obtain spinnable products a shorter polymerization time or greater amount of chain terminator is used compared to condensation in the absence of the modifier. In examples, ethylene carbonate is incorporated in nylon 66, 6 or 66/6, acetic acid being used as chain terminator.
Patent GB-691653-A (GB)
Title: Improvements in or relating to pipe bends
IPC: F16L43/02
Filed: 1951-06-11
Abstract: 691,653. Pipe bends. MIAG VERTRIEBSGES. June 11, 1951 [June 12, 1950], No. 13764/51. Class 99 (i). In bends comprising several partial bend sections 1 and wherein the contacting surfaces of adjacent sections are pressed together by clips 3, each clip, which may be' of U-section, extends around a major portion of the peripheries of adjacent sections and cooperates with projections, e.g. flanges 2 having tapered side surfaces 4, of the sections, and is provided with adjustable means, e.g. a toggle-like lever, to draw the ends of the clip together.
Patent GB-743329-A (GB)
Title: Improvements in or relating to piperazine derivatives having activity against micro-organisms
IPC: C07D295/03
Filed: 1952-05-30
Abstract: The invention comprises N-alkyl-2 : 5-dimethyl piperazines of the formula <FORM:0743329/IV(a)/1> where R is a normal alkyl radical having from 10-14 carbon atoms; and acid addition salts thereof.  The compounds are prepared by reacting 2 : 5-dimethyl piperazine (preferably the trans isomer) with the appropriate alkyl halide, preferably in aqueous alcohol. The piperazine may be partially neutralized initially to form a monovalent cation, and the pH of the reaction mixture controlled by the addition of a base, e.g. sodium bicarbonate, to minimize the yield of N : N1-dialkyl-2 : 5-dimethyl-piperazine.  In examples: (1) 2 : 5-dimethyl-piperazine in aqueous ethanol containing acetic acid is refluxed with n-decyl iodide, adding sodium bicarbonate periodically.  After neutralization and ether extraction, 2 : 5-dimethyl-1-n-decyl-piperazine is separated from 2 : 5-dimethyl-1 : 4-di-n-decyl-piperazine by selective extraction with dilute hydrochloric acid; (2) 2 : 5-dimethyl-1-n-undecyl-piperazine is similarly obtained using n-undecyl bromide; (3) 2 : 5-dimethyl-1-lauryl-piperazine using a mixture of lauryl halides; and (4) 2 : 5-dimethyl-1-tetradecyl-piperazine from tetradecyl iodide, separating the product from the corresponding 1 : 4-dialkyl compound in each case.  The 2 : 5-dimethyl-1-alkylpiperazines are characterized as their dihydrochlorides.
Patent GB-820523-A (GB)
Title: Means for controlling the position of a hot rod or strip in a rolling mill
IPC: B21B37/50
Filed: 1957-05-01
Abstract: 820,523. Photo-electric control systems. ALLMANNA SVENSKA ELEKTRISKA A.B. May 1, 1957 [May 5,1956], No. 13830/57. Class 40 (3). [Also in Group XXXV] In an arrangement for controlling the position of a hot element 10 passing through a rolling mill, radiation from the element is sampled by a mirror 17 rotated by a synchronous motor 20 and directed on to a photo-cell 13 having a narrow field of view so that pulses 441, 442, Fig. 5, coinciding with the scanning of the leading and trailing edges are developed across a condenser 36 to control, through amplifier and cathode follower stages 33, the firing points of the thyratrons 26, 27, the anodes of which are fed with the alternating potentials energizing the synchronous motor 20 whereby a correcting signal is developed across terminals 50 in accordance with positional errors in the directions of the arrows. The position detected may be the bottom of a loop in which case the roller speeds may be controlled. The converter comprising thyratrons 26, 27 works as a rectifier when the positive pulses 441 occur less than 90 degrees after the mains voltage passes through zero and as an inverter when they occur after, a negative bias on the thyratrons preventing firing by other than positive pulses. The working point may be changed either by rotating mirror 17 on its shaft or rotating the stator of motor 20, and the photo-electric cell may be photo-emissive or photo-resistive. In a modification, Fig. 3, the pulses are fed across transformer 43 to the grid of one of a pair of anti-parallel connected thyratrons and the grid of the other is energized by the mains through a firing angle control circuit 55. Superfluous alternate pulses 441 may be avoided if a doublesided mirror is used by running at half-speed. In a further modification described with reference to Fig. 2 (not shown), a parabolic mirror is arranged between the element and the rotating mirror.
Patent GB-803874-A (GB)
Title: Improvements in or relating to variable-ratio power transmission apparatus
Inventor: HOBBS HOWARD FREDERICK
IPC: F16D67/00
Filed: 1956-05-04
Abstract: 803,874. Change-speed control. HOBBS TRANSMISSION, Ltd. April 4, 1957 [May 4, 1956], No. 13838/56. Class 80 (2). The setting of a pressure relief valve in a bypass pipe 20 between a gear pump 50 and a pipe 51 leading to a change-speed gear in which change of ratio is produced by selective engagement of friction clutches and/or brakes, is modulated by varying the position of the throttle pedal 43 of the engine driving the change-speed gear, the valve comprising a first stepped piston 16 biased to close an exhaust passage 22 by a spring 18 and sliding in a bore having parts 13, 47, 14 of different diameter, and a second piston 17 positioned by the throttle pedal. The arrangement is such that when the throttle is only just opened the first piston 16 allows the greater part of the oil supplied under pressure by the pump 50 to escape to exhaust through the passage 22, so that take-up of drive occurs without shock, but when the throttle pedal 43 has been depressed, the passage 22 is virtually closed, so that greater pressure is applied to the ratio selecting clutches and/or brakes when the change-speed gear has to transmit greater torque. A passage 24 leads from the pipe 20 to a port 25. When the throttle pedal 43 is depressed, the port 25 is opened by upward movement of the second piston 17, and oil flows through passages 27, 28 to the space 15 between the two pistons. The pressure thus built up in the space 15 acts on the smaller diameter part of the first piston 16, to assist the spring 18 in moving the first piston upwards to close the exhaust port 22 and thereby build up pressure in the pipe 20 &c. When the throttle pedal 43 is released, the spring 18 &c. moves the second piston 17 downwards to close the port 25, and simultaneously opens an exhaust port 35, so that oil pressure in the space 15 falls. Ports 31, 36 connect with passages surrounding the two pistons to drain off any liquid leaking. to these spaces. A port 33 is connected to the ratio selecting mechanism in such a way that oil under pressure is supplied therethrough to a space 32 in the part 47, of diameter intermediate that of the bores 13, 14, when a certain ratio or ratios are selected. For example, oil under pressure may be supplied through the port 33 for all ratios in the changespeed gear except direct drive. When oil is so supplied, this additional pressure acts on the intermediate diameter part 32 of the stepped first piston 16 to increase the effect of the spring 18, and the pressure in the space 15, to move the first piston 16 to close the exhaust port 22, thus increasing the pressure in the pipe 20 &c. A pipe 21 leads from the head of the valve to lubrication points within the gearing. The valve may replace the pressure relief valve 53 described in Specification 738,588.
Patent GB-930158-A (GB)
Title: Improvements in chairs
Inventor: MAY WILLIAM ELTON
IPC: A47C1/124
Filed: 1961-04-18
Abstract: 930,158. Fixing chains in rows; stackable chairs. TALBOYS MANUFACTURING CO. Ltd. April 18, 1962 [April 18, 1961], No. 13891/61. Class 52 (2). A chair has at each side a pair of legs 17 formed from a single tubular member, the legs being spaced outwardly from the sides of the seat 9 and being connected to spaced front and rear transverse members 11, 12 of the chair frame by jaw members 13, 13, 14, 14, the jaw members 13, 13 facing inwardly towards each other and the jaw members 14, 14 facing outwardly away from each other. The jaw members are of complementary shape to the surfaces of the legs 17 which they are adapted to engage so that several chairs may be positively linked to form a row. The front legs are vertical and the rear legs are rearwardly inclined and diverge from the front legs sufficiently to permit the chair to be stacked on a similar chair (Fig. 7).
Patent GB-739700-A (GB)
Title: An improved newspaper, magazine or like vending machine
IPC: G07F11/04
Filed: 1954-05-12
Abstract: 739,700. Newspaper vending machines. MACKENZIE, J., BISSET, G. P., and BISSET, R. W. May 12, 1954 [June 12, 1953], No. 13898/54. Class 27. In a coin-freed apparatus for vending newspapers or other publications, the top newspaper of a stack 21 resting on a shelf 10 formed by spaced battens 10a is delivered through a gap 16 at the rear of the shelf to a delivery slot 19 by spikes 29 or hooks on a roller 27 which is connected by eye-bolts 28 to rods 25b extending downwards from a reciprocable carriage 25, the eye-bolts being large enough to allow limited rotation of the roller as well as free vertical movement. During forward movement, the roller rotates sufficiently to dig the spikes into the top newspaper and moves it until the rods 25b engage a shelf support 20, in which position the newspaper overhangs the stack sufficiently to fall down when the roller moves back and withdraws the spikes. A pin 25d on the carriage engages a slot in a lever 30 extending into a partitioned space 7 at the side of the cabinet and connected to the coin slide. A hinged access door 12 having a window 15 is provided. Coin action.-A coin slide 32 slides between the top wall 4 of the cabinet and a bearing plate 33 and a coin or coins inserted in a hole or holes 32a in the slide enable it to be pushed in over a spring-loaded plunger pawl 36. When all the coins have passed the plunger, the lost motion between the end of the carriage-operating lever 30 and a slot 41a in a member 41 connected to the coin slide is taken up and further movement moves the carriage 25 and roller 27 towards the front of the cabinet, thus releasing the overhanging newspaper. The coins, after passing the end of the bearing plate, fall into a coin box, but, if they jam, they are forcibly ejected by a spring-loaded ball 39a. The sloping head on the plunger pawl 36 allows the slide to be moved freely outwards. To assist in removing coins, if necessary, from the withdrawn slide, semi-circular depressions 33a in the bearing plate allow the coins to be tilted and then lifted by the finger nail. Fraudulent actuation, preventing.-If washers are inserted, the plunger 36 will move into the hole in them or, if cardboard or other soft discs are inserted, it will dig into them. Empty machines, locking.-As roller stop lever 22, having unequal arms, is pivoted in a slot in one of the shelf battens 10a and is normally held horizontal by the pile of newspapers but, when the pile is exhausted, the lever tilts into the vertical position and prevents the roller from being moved from a position in which the coin slide is in the inward position, with the coin holes 32a shrouded by the top wall 4.
Patent GB-625083-A (GB)
Title: Means for spreading and controlling trawl nets and the like
IPC: A01K73/045
Filed: 1947-05-23
Abstract: 625,083. Fishing. CHANT, J. May 23, 1947, No. 13945. [Class 48] [Also in Group XXI] A spreading device for trawl-nets has a flat body incorporating a peripheral sealed air tube 2, and a nest of sealed air tubes 3 tained in the space encompassed by the peripheral tube. Towing brackets 5, 6 are mounted on the perforated side plates 1, and a ballast weight 13 is provided. In a modification, a towing bracket is fitted on one side of the device only, and in this case towing eyes are provided on the other side in the vicinity of the vertical centre line of the device.
Patent GB-231704-A (GB)
Title: Improvements in or relating to safety cut-off valves
IPC: F16K17/10
Filed: 1924-06-11
Abstract: 231,704. Floyd, W. E., Williams, A., and Godsey, F. E. June 11, 1924. Actuating-mechanism; closure members. - A safety cut-off valve adapted to be used in conjunction with gauges, indicators &c. on steam boilers and adapted to close automatically in the event of the exterior valve casing being broken, has the interior and external valve casing separately formed and connected together by a coupling nut engaging an integral shoulder on the outer part. The. cut-off valve 18 is guided by a spindle 20 provided with helical grooves 19 and co-operates with a seat 17 formed on the end of a steel tube 16 inserted in a flanged casing 10 screwed into the end 12 of a boiler. The inner end of the casing is closed by a ported plug 22 having radial grooves 23, the back of the valve - having similar grooves 24 if desired. The main valve 38 which has an extension 41 adapted to unseat the cut-off valve is actuated by a screwed spindle 35 and is housed in a casing 26 provided with a coned surface 27 held against a corresponding surface on the casing 10 by a coupling nut 42. The casing 26 is formed at 31 with a threaded aperture to receive a test cock 32. Should the exterior casing receive a severe blow, the inner casing will fracture at 44 and allow the cut-off valve to close. In a modification, a grooved ferrule is inserted between the two casings. Specification 191,819 is referred to.