baber/WOPTO huggingface dataset:
Patent GB-808106-A (GB)
Title: -a-(4-chloro-2:3 or 2:5-dimethyl-phenoxy) propionic acid and herbicidal compositionscontaining it
Inventor: STEVENSON HERBERT AUBREY
IPC: C07C51/363
Filed: 1956-07-27
Abstract: The invention comprises a -(4-chloro-2:3 or 2:5 dimethylphenoxy) propionic acid, its salts, esters and amides, and herbicidal compositions containing it as active constituent.  The compounds may be prepared by treating a 4-chloro2:3 or 2:5 dimethyl phenol with an a -halogenated propionic acid or acid derivative in the presence of an alkaline condensing agent. a -(4-Chloro - 2:3 - dimethylphenoxy) propionic acid may also be prepared by chlorinating a -(2:3-dimethylphenoxy) propionic acid. In the examples a  - (4 - chloro - 2:5 - dimethyl phenoxy) propionic acid is prepared by treating 4-chloro-2:5-dimethylphenol and (1) ethyl a -bromopropionate in the presence of potassium carbonate and acetone and hydrolysing the product; (3) a -chloropropionic acid in the presence of sodium hydroxide; (2) a -(2:3-dimethylphenoxy) propionic acid is treated with chlorine in tetrachloroethane solution at room temperature to give a -(4-chloro-2:3-dimethylphenoxy) propionic acid; (10 a -(4-chloro-2:5 dimethyl-phenoxy) propionamide is prepared by treating the acid with thionyl chloride followed by ammonia.ALSO:The invention comprises herbicidal compositions containing a -(4-chloro-2 : 3 or 2 : 5-dimethylphenoxy) propionic acid, or a salt, amide or ester thereof, and a carrier or diluent.  The composition may be in the form of an aqueous solution of water-soluble salt such as an alkali metal salt or a salt of a primary, secondary or tertiary amine or an hydroxy-amine such as ethanolamine, an acid or ester together with a water-immiscible solvent such as benzene and an emulsifying agent to give an emulsion on dilution with water, an acid together with a water-miscible solvent such as acetone or alcohol and a dispersing agent to give a dispersion on dilution with water, an ester with a water-miscible solvent and an emulsifier, an ester and an emulsifier, or an acid or ester with a dispersing agent and a solid inert diluent such as kaolin.  The compositions may also contain water and/or wetting agents.  The compositions may also be in the form of a salt together with a wetting agent or the active compound may be mixed with a powdered solid, which may be inert or a standard agricultural fertilizer, to give a herbicidal dusting powder.  In the examples a composition is prepared containing a -(4-chloro-2 : 3-dimethylphenoxy) propionic acid (5) in the form of its diethanolamine salt together with a wetting agent to give a 0.4 per cent w/v solution, (6) and kaolin together with a condensate of formaldehyde and an alkyl aryl sulphonate as dispersing agent, (7) in the form of its sodium salt together with a wetting agent, (8) and alcohol together with a dispersing agent which is a mixture of lauric diethanolamide and a polyethylene oxide-octylphenol condensate, (9) and kaolin. Similar compositions may be prepared using the 2 : 5-dimethyl compound.
Patent GB-360463-A (GB)
Title: Improvements in or relating to high frequency amplifying systems
IPC: H03D1/00
Filed: 1930-08-02
Abstract: 360,463. Valve detecting circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, and ROUND, H. J., Westfield, Muswell Hill, both in London. Aug. 2, 1930, No. 23361. [Class 40 (v).] In order to prevent the varying damping of the oscillatory circuit of a thermionic detector due to the shunting effect of the valve conductance across the anode-filament capacity, the anode-grid capacity is neutralized by known means, the input circuit having low effective resistance of the order of that of a tuned circuit subjected to considerable reaction. The above effect is important where oscillatory circuits of negligible resistance are concerned as for instance with circuits of the type described in Specification 358,932, or a circuit associated with a tuning fork, quartz, or other mechanical oscillator. Neutralization may be effected with a triode rectifier by a balancing condenser C3 as shown in Fig. 3 ; alternatively a screen-grid valve may be used as a detector; or two triodes may be used with push-pull input and parallel output circuits, Fig. 4 (not shown).
Patent GB-404898-A (GB)
Title: Improved means for displaying powder boxes and like containers
IPC: B65D73/00
Filed: 1933-08-23
Abstract: 404,898. Displaying powder-boxes &c. MORGAN, E. C., 40, Oxford Road, Chiswick, London. Aug. 23, 1933, No. 23422. [Class 3 (ii).] A powder or like box C is supported for display on a base B by a strip of ribbon or the like A which is secured at one end to the base and passed between the box and its cover D to be gripped therebetween.
Patent GB-506723-A (GB)
Title: Improvements in or relating to the tempering of glass sheets
IPC: C03B35/20
Filed: 1937-08-26
Abstract: 506,723. Tempering glass; cradles for lifting and lowering. GILT EDGE SAFETY GLASS, Ltd, GROTEFELD, A. W., and SHAW, J. J. Aug. 26, 1937, No. 23456. [Class 58] [Also in Group XXX] A device for supporting a glass sheet during tempering comprises a number of spaced abutments which are adapted to engage directly the periphery of the sheet without deforming it, the abutments being spaced apart along the sheet and'connected together movably in such a way that the supporting pressures applied to the sheet during the heating-operation are substantially equal for each abutment. The suspension devices may consist of cradles 30, Fig. 2, each composed of a pair of rods or wires 31 joined by a connecting piece 32 and provided with a slotted metal strip or abutment 33 for supporting the lower edge of the glass sheet. The upper edge of the sheet is supported by a similar strip 37 which is slidable along the wires 31. The connecting piece 32 is supported by a screw 39, which is pivoted by a pin 40 to a strip 29 that forms part of a movable carrier 28. In use, the sheet is placed in the cradles, as shown, and its position is adjusted so that the abutments 33 are symmetrical in relation to the centre of gravity of the sheet. The cradles can move relatively to one another in the plane of the sheet to compensate for any distortion of a cradle that may occur during heating. The abutments may be formed of porcelain or of other material of low thermal conductivity if desired. The cradles may be connected to the ends of a lever 45, Fig. 4, which is suspended at its centre from the bar 29 by means of a turn buckle 46. With larger sheets of glass, more than two cradles are used, pairs of cradles being supported'from levers 45 which, in turn, may be supported by secondary levers, a number of arrangements being shown as described in the Specification. A balance weight may be used with some arrangements to ensure equality of the pressures exerted by the abutments. The invention may be used with methods and apparatus described in Specifications 449,602, 449,864, 473,065, 473,066, and 506,724. Specification 506,787 also is referred to.
Patent GB-332751-A (GB)
Title: Improvements in mercerising textile fabrics and in apparatus therefor
IPC: D06B7/08
Filed: 1929-07-31
Abstract: 332,751. Mycock & Co., Ltd., W., and Mycock, W. July 31, 1929. Laterally - stretched travelling materials, treating with fluids. - Apparatus for mercerizing textile fabrics comprises curved expander bars E fitted in the mercerizing vessel A below the level of the liquor and submerged therein when the machine is working so that lateral shrinkage is prevented. The fabric is preferably maintained in the stretched condition during transfer to the washing bath D and during washing by being kept in constant surface contact with rollers C; the rollers d also running in surface contact until the washing is completed.
Patent GB-176016-A (GB)
Title: Coin-freed microscope
IPC: G07F17/02
Filed: 1920-08-10
Abstract: 176,016. Shepherd, F. H. S., and Longe, J. M. Aug. 10, 1920. Exhibiting microscope slides.-Coin-freed apparatus for enabling objects to be viewed through a microscope for a given time comprises a movable support or stage adapted to be operated from the outside of the casing so as to bring different specimens under the object glass, and an electric lamp mounted near the stage glass, the lamp being switched on and off automatically by a coin-operated lever controlled by timing-mechanism. The specimens are mounted on a stage glass g fixed on a tubular support h which is adjustably screwed into a sleeve i, Fig. 3. This sleeve can be rotated through gearing m, l by an external knob k<1> on a spindle k carrying a pointer. Below the stage glass are a condenser n and an electric lamp o, which is connected to a battery through a mercury switch u, v, Fig. 2. The contact-arm u projects from an arm u<1> pivoted on a spring-controlled lever q, and is normally held out of the mercury by the pressure on the arm u<1 >of a pin w carried by a wheel w<1> of a spring-driven clock-work mechanism. When a coin is dropped down a shoot d, at a bend in which a slot may be made to allow small coins to fall through, the coin rocks the lever q, freeing the arm u<1> from the pin w. The arm u thereupon drops into the mercury in the cup v, closing the lamp circuit. After one revolution of the wheel w<1> under the control of the clock-work escapement y<1>, the pin w again engages the switch arm n<1> and breaks the circuit of the lamp. To ensure the starting of the clockwork when the lever q is operated, a flexible lever z is caused by a pin z' to act on the escapement. The microscopic specimens may be visible to the naked eye through a glass panel. One Provisional Specification describes an apparatus in which a mercury switch of the hour-glass type is used for determining the period during which the specimens may be viewed. The specimens are mounted on a sliding support, and an object may be introduced into the apparatus by the user for examination under the microscope. According to the other Provisional Specification, the power for driving the clockwork mechanism may be derived from the coin-lever itself. Reference has been directed by the Comptroller to Specifications 6652/90, 15603/90, 23042/92, 3003/01 and 1129/02.
Patent GB-1536627-A (GB)
Title: Electronic switching device
IPC: H03K17/945
Filed: 1977-06-03
Abstract: 1536627 Electronic switching device R BUCK 3 June 1977 [24 June 1976] 23613/77 Heading G1N An electronic switching device e.g. as described in Specification 1423311 (see Division G1) has an exclusive -OR gate 15 connected between an oscillator 10 and the gate of a switching thyristor 12 whereby the thyristor can optionally be made to switch on when the oscillator has responded to an external variable or made to switch off for the same response of the oscillator by changing the voltage supplied to the second input 18 of the OR gate.
Patent GB-205284-A (GB)
Title: Improvements in or relating to wind screens for use with motor vehicles
IPC: B60J1/20
Filed: 1922-08-31
Abstract: 205,284. Slater, A. S., and Adams, E. W. Aug. 31, 1922. No Patent granted (Sealing fee not paid). Windscreens. - In a side windscreen for motor-vehicles of the kind having a flexible flap 12 projecting from its front edge, the flap is adapted for attachment to the front screen in such a manner that the latter may be adjusted to any desired inclination without disturbing the connection between the bar and front screen, the flap folding to permit the adjustment being made. In the arrangement shown a metal bar 14 is passed through a pocket 13 formed in the front edge of the flap 12 and is provided at its upper and lower ends respectively with a hookshaped projection 16 and a slotted projection 19 adapted to engage the upper edge and side of the front screen by a downward sliding movement. Alternatively, the lower end of the bar may be provided with a cranked portion adapted to engage the pin about which the front screen is hinged. The screen 2 is supported on the door or vehicle side by a pair of downwardly extending arms 5, which are attached to a metal frame 1 surrounding the celluloid 2 and rest in sockets 7. A fabric flap 3 strengthened by celluloid closes the gap between the bottom of the screen and the upper edge of the door or vehicle side, while at the same time allowing easy access to the door handle.
Patent GB-501523-A (GB)
Title: Improvements in or relating to fountain pens, propelling pencils and the like
IPC: B43K25/02
Filed: 1937-08-28
Abstract: 501,523. Fountain pen &c. clips. MENTMORE MANUFACTURING CO., Ltd., and BARKER, G. E. Aug. 28, 1937, No. 23627. [Class 44] [Also in Group IV] A fountain pen, propelling pencil, or like article made from artificial material such as celluloid or synthetic resin has a clip of the same material secured thereto by adhesive, cement, or metal fastening. Fig. 2 shows a fountain pen cap 1 of celluloid &c. with a clip comprising layers 3a, 3c of celluloid &c. with an intermediate metal strip 3b which may be exposed at its thickened lower end 3d for ornamental purposes. The upper end of the layer 3a is cemented in a recess 2 by suitable solvent such as acetone or amyl acetate. In a modification the upper end of the clip has rectangular projections which enter corresponding apertures in the cap. The sides of the projections and the walls of the apertures may be undercut. The projections are secure in the apertures by suitable cement. Fig. 5 shows a further form in which the clip arm 7 is recessed to accommodate a metal fastening 8 the limbs of which are inserted in slots 9 and clinched. Member 8, as shown, has a pointed extension for ornamental and clipstrengthening purposes.
Patent GB-909504-A (GB)
Title: Cream
Inventor: HAWLEY HENRY BERNARD
IPC: A23C13/08
Filed: 1960-07-06
Abstract: Sterile clotted cream is produced by preheating cream to thicken it, adding nisin, filling into and sealing in containers and heating to sterilizing temperature.  Fresh full cream milk is separated at 100 DEG  F. to yield cream with 62.0-65.0% fat content, adjusted to 62.0% fat content by the addition of separated milk preheated to 180 DEG F. and sufficient nisin added to give a concentration of 100-120 Reading units per gram.  The cream is then filled into jars, the surface subjected to a sterile air blast at 235 DEG  F., capped and sterilized at 235 DEG  F. for 30 minutes and cooled.
Patent GB-1272433-A (GB)
Title: Threshold circuit
IPC: H04N1/403
Filed: 1969-05-09
Abstract: 1,272,433. Thresholding circuits; copying by scanning. INTERNATIONAL BUSINESS MACHINES CORP. 9 May, 1969 [21 May, 1968], No. 23684/69. Headings H3T and H4F. In a thresholding circuit of the type in which the signal is delayed and compared with combined voltages respectively responsive the positive and negative peaks of the undelayed signal, means are provided for maintaining a minimum separation between the voltages. In Fig. 3, video signals from a document scanner are applied to one input of a comparator 61, 62 via a delay circuit 14<SP>1</SP> and the other input receives a threshold level derived from a positive peak detector 18<SP>1</SP> and a negative peak detector 20<SP>1</SP>. The comparator thus selects the part of the signal above the threshold and squares it. The capacitors of the detectors discharge through resistors 86 and 88 towards the opposite peak value and a bias circuit 26<SP>1</SP> prevents the separation falling below a minimum value. In Fig. 7 (not shown) the corresponding circuit (26<SP>11</SP>) is controlled by the negative peak circuit so that the minimum separation increases with this value since with photomultiplier tubes the noise level increases with the absolute signal level. To avoid a sustained positive signal appearing as the peak negative signal the effective peak negative signal may be formed from a combination of the actual value and a further negative peak signal generated at the beginning of the scan (122<SP>1</SP>, Fig. 7, not shown).
Patent GB-236935-A (GB)
Abstract: 236,935. Mange, F. July 10, 1924, [Convention date]. Matches. - For conveyance to the various operating positions individual match sticks are picked from parallel stick rows and pushed sideways into individual upright standing clips adapted to hold them across their length, and arranged in a row on successive carrying bars. A magazine 1 into separate compartments of which match sticks are fed and held by resilient partitions 3, Fig. 6, is arranged opposite a conveying chain 2 which carries a series of clip-carrying bars 5. Each of these bars carries a row of clips 6, Fig. 7, corresponding in number to the number of magazine compartments. Spring tongues 6a of the clips are formed with an abutment so that each clip which is adapted to grip a stick over a considerable portion of its length can only pick up one stick at a time. The bars 5 are held between a fixed jaw 8 and a spring-pressed pivoted jaw 9 and are moved towards the magazine at the filling place by a movable abutment 10 operated by a cam 11. Ejecting plungers 16 arranged on a slide 17 which is urged towards the chain 2 by means of a steel band 18 to which is attached a weight 19 enter the magazine compartments and push cut the front stick of each series in the magazine into the corresponding clip on the carrying bar. A clutch member 25 on a roller 20 supporting the steel band has a pin 32 to which is linked a spring-pressed push rod 31 adapted to be raised to impart a slight rotation to the clutch member by means of a cam 30 driven from the main shaft 13, when by means of a cam 27 co-operating with a spring-pressed forked-lever 26 the clutch member engages with the roller. A slight reverse motion is thus imparted to the roller to cause the pressure of the plungers on the match sticks in the magazine to be released. The abutment 10 is then retracted and the chain 2 moved on another step by the action of a maltese cross mechanism 37 whose crank pin cam 36 is situated on the main shaft 13. The carrying bars are subsequently transferred to another track chain, being just deposited on a track line 45 by the engagement of the pivoted jaws 9 with an abutment 40, then being moved along the track by thumbs 44 on a chain 41 and finally being taken up by jaws 58, 59 on a chain 50, along the horizontal course of which the matches are carried over troughs containing melted paraffin or fluid sulphur, and the igniting material. In each trough a roller adjustable in height is mounted, the one rotating in the paraffin having a series of longitudinal grooves constituting small dipping troughs and the other rotating in the more viscous igniting material having peripheral grooves for applying the material. After each treatment the matches are carried through a heating device and may then be conveyed along a drying channel to a releasing device which may comprise a comb the teeth of which engage into the clips behind the sticks.
Patent GB-1119428-A (GB)
Title: Memory system
IPC: G11C29/00
Filed: 1967-05-23
Abstract: 1,119,428. Defective storage elements. INTERNATIONAL BUSINESS MACHINES CORP. 23 May, 1967 [15 July, 1966], No. 23786/67. Heading G4C. In a memory system, a supplied address specifying the ordinal number of a word storage location is modified, under control of stored information specifying defective word locations, to specify the ordinal number, counting all locations, of a non-defective location having the ordinal number, counting only non-defective locations, specified by the supplied address. Each column of a matrix memory comprises seven word locations, two of which are spare, and a check bit for each location, the check bit being " one " if the location is defective and " zero " if not. During operation, an address modification circuit receives the check bits from the required column of the memory on seven input lines, and a signal on the nth of five further lines to specify that the nth non- defective word in that column is required. The modification circuit includes a shift register having a first stage initially set to " one " and seven further stages each corresponding to one of the seven input lines. n shift pulses are applied to shift the " one " along, by-passing those stages corresponding to an input line having a " one ", which stages also do not receive shift pulses. The stage finally containing the " one " energizes a corresponding output line to select a word location in the selected column. A read-write cycle comprises: (a) destructively reading the check bits of the required column to the modification circuit, (b) destructively reading the word location specified by the modification circuit and simultaneously re-writing the check bits (the magnetization directions for particular bit values being opposite in the check bit locations and the word locations to allow this), (c) writing into the word location either the word read out or a new word. If a plurality of words are required in one column, stage (c) of one cycle may occur at the same time as stage (a) of the next. The memory may use magnetic cores, ferrite tubes or thin films. It is mentioned, as a modification, that the spare word locations in a given column could be used to replace, in the above way, defective locations in other columns as well, the corresponding check bits being set to " one " if this occurs as well as when the location is defective.
Patent GB-579312-A (GB)
Title: Improvements in brake control mechanism for looms
IPC: D03D51/00
Filed: 1939-08-18
Abstract: 579,312. Loom brakes. BERRY, A. Aug. 18, 1939, No. 23805. [Class 142 (i)] When a Bowden cable controlled by a weft stop motion releases a lever E, a spring D applies a band brake, the braking force being augmented by toggle links c which carry one end of the brake band. Release of the brake is effected by lifting a handle M which tautens the cable so that its sheath f pushes the lever E to the position shown dotted, thereby tilting the brake band away from the brake wheel as shown in Fig. 2 ; springs d<4>, d<6> help to remove the brake, which is held off initially by a ferrule f<2> on the cable f<1> snapping over a catch G<1>, Fig. 3. When the loom is started, a pin. k on the striker P of the stop motion described in Specification 504,946 displaces the catch G<1> and allows a slightly lower catch G to engage the ferrule, Figs. 10, 11. The catches G, G<1> are carried by adjustable links H. On operation of the stop motion, the striker disengages the starting handle and releases the ferrule, whereupon a pawl T drops behind the striker to prevent the loom being started with the brake on. In a modification, the spring D is at the other end of the rod C, and in another modification the handle M is shorter but has a greater angular travel which is reduced by linkage to impart the same lift to the ferrule. According to the Provisional Specification, looms with horizontal starting bandles may have the catch G attached to the starting handle.
Patent GB-495223-A (GB)
Title: Improvements in or relating to a roll film photographic camera
IPC: G03B19/04
Filed: 1937-09-01
Abstract: 495,223. Photographic cameras. KODAK, Ltd. Sept. 1, 1937, No. 23900. Convention date, Sept. 25, 1936. [Class 98 (i)] A roll-film photographic camera having a window 15 adjacent the spool chamber 5 for viewing numerals &c. on the film backing material, has a resiliently mounted member 18 pressed into contact with the backing material for reducing light scatter in conjunction with a tubular member 17 attached to the camera wall. The member 18 is pivoted at 19 to a member 20 hinged at 21 and acted on by the spring 22. To ensure good contact with the film backing material a flared end 24 is lined with felt or plush 25. In a modification the hinge 21 is dispensed with and the member 20 is itself resilient.