baber/WOPTO huggingface dataset:
Patent GB-1138234-A (GB)
Title: Peroxyacetals and peroxyketals
IPC: C07C409/22
Filed: 1966-05-16
Abstract: 1,138,234. Peroxyacetals and peroxyketals. MONTECATINI SOC. GENERALE PER L'INDUSTRIA MINERARIA E CHIMICA. 16 May, 1966 [21 May, 1965], No. 21681/66. Heading C2C. Peroxyacetals or peroxyketals are prepared by reacting an alkyliden-diperoxide with a mono- or di-hydric alcohol until up to 1 mol. of hydroperoxide by-product per mol. of starting alkyliden-peroxide has been formed. The peroxyacetals and peroxyketals have the formulµ and respectively in which R 1  is an alkyl or aralkyl group containing up to 10 carbon atoms; R 2  and R 3  are hydrogen, or an alkyl or cycloalkyl group which may be alkyl- or halogen-substituted and which contains up to 10 carbon atoms, or R 2  or R 3  forms the group in which R 6  is hydrogen or an alkyl or cycloalkyl group which may be alkyl or halogen substituted and contains up to 10 carbon atoms; or R 2  and R 3  together with the carbon atom to which they are attached form a carbocyclic ring; R 4  is a primary or secondary alkyl group, aralkyl or a cycloalkyl group containing up to 10 carbon atoms; R is hydrogen or an alkyl, cycloalkyl or aralkyl group containing up to 10 carbon atoms; and R 5  is a bivalent alkylene, cycloalkene or arylene group containing up to 10 carbon atoms and which may be substituted by an alkyl group or a halogen atom. In the preferred embodiment of the invention an alkylidene diperoxide of formula is reacted with a monohydric alcohol R 4 OH or with a dihydric alcohol having the formula and the reaction is stopped by cooling when up to 1 mol. of R 1 O-OH (hydroperoxide) per mol. of starting alkylidendiperoxide has been formed as a by-product. Examples are given of the preparation of (a) 2-methoxy-2-tert.-butylperoxy - butane; (b) 2 - methoxy - 2 - tert. - butylperoxy - propane; (c) 2 - ethoxy - 2 - tert. - butyl - peroxy - propane; (d) 2 - (2 - ethyl - hexyloxy)-2-tert.-butyl-peroxy-propane; (e) 2- benzyloxy - 2 - tert. - butyl - peroxy - propane; (f) the compound (g) a mixture of 2,2-di-tert.-butylperoxy-propane; 2 - methoxy - 2 - tert. - butyl - peroxypropane and acetondimethylacetal; (h) 2,2- di - tert. - butyl - peroxy - propane and (j) 1-methoxy-1-tert.-butylperoxy-cyclohexane.
Patent GB-1217046-A (GB)
Title: Electronic apparatus operable to two stable output states
IPC: G05B11/16
Filed: 1968-05-08
Abstract: 1,217,046. Automatic temperature control systems. WESTINGHOUSE ELECTRIC CORP. May 8, 1968 [June 16, 1967], No.21702/68. Heading G3R. [Also in Division H3] In a switching circuit having a regenerative feedback circuit connected between two electronic switching means T1, T2 and T3, T4 each of which has two stable output states, the feedback circuit 100 includes a first bi-directional current path 102 having resistance 106 and a second current path 104 including further resistance 110 and an asymmetrically conductive means such as diode 112 and switch means 108 and when the switch means 108 is closed the second current path 104 is conductive and non- conductive respectively in response to the operating states of the second switching means T3, T4. In the voltage level sensitive switching circuit shown if the voltage at 18 is negative transistors T1, T3 are off, transistors T2 and T4 are on and diode 112 is conductive. In this set or pick up state the thyristor or thyratron K is turned ON so that rectified current is supplied from or supply 90 to a load 92. If the voltage at 18 goes positive the transistors T1 and T3 turn on T2, T4 and diode 112 turn off together with the controlled rectifier K which interrupts the current to the load 92. The positive voltage required at 18 to switch the circuit back to the reset state depends on the positive feedback loop 100 which is variable by switch 108 and resistor 114. By reversing the diode 112 the feedback path 104 is only conductive when T4 is OFF to alter the base voltage VB2 so that this effects the negative voltage required at 18 to set the circuit. Resistors 56 and 58 and diodes 68 and 70 protect the base-emitter, junctions of the transistor T1, T2. A capacitor 72 rejects noise to prevent operation of the circuit by spurious signals. A bilateral breakover device 94 prevents two terminal or anode breakover operation of thyristor V. The transistors T1-T4 may be replaced by valves. Input control circuit 12 includes a variable impedence 80 which may be a variable resistor a negative or positive temperature co-efficient resistor (80R) Figs.2-5 (not shown), or a switch (80S). The variable impedence element 80 and resistor 76 may be inter-changed. In a further control circuit Figs.6 and 7 (not shown), a Zener diode (80Z) may be connected in place of 80 or 76, the circuit then operates to the set state as the supply voltage V S @increases or decreases respectively about a set value. In a further control circuit Fig. 8 and 9, (not shown), by connecting a resistor (116) across 14, 16 or 20, 22 a Zener diode (118) across 20, 22 or 14, 16 and a resistor (126) in parallel with a D.C. source (122) across 18, 20 or 16, 18 the circuit will be operated to the set state, and switch 30 will be closed if the voltage of the D.C. source (122) falls below or rises above respectively a pre-set value dependent on the Zener voltage.
Patent GB-788370-A (GB)
Title: Novel heterocyclic compounds
Inventor: AUSTIN WILLIAM CHARLES
IPC: C07D215/42
Filed: 1955-07-27
Abstract: The invention comprises N - [o  -( quinaldine - (4) - amino) - amino) - alkyl] - 4 - aminoquinaldinium salts of the general formula: <FORM:0788370/IV (b)/1> where X is an anion, for example a halogen, and n is an integer from 2 to 20 inclusive.  The compounds are made by hydrolysing or subjecting to hydrazinolysis an N-(o -phthalimido-alkyl)-4-aminoquinaldinium salt, for example by treatment with aqueous hydrazine hydrate, and treating the resulting N-o -aminoalkyl compound with a 4-haloquinaldine.  The resulting salt may be converted into other salts by conventional methods, e.g. double decomposition.  The compounds have trypanocidal properties. Examples describe the preparation of quaternary iodide-hydriodide salts of the above general formula wherein n is 5, 6, 7, 8, 9, 10, 14 and 16 and the preparation of corresponding hydrochloric, nitric, perchloric and 2:21-dihydroxy-1:11 - dinaphthylmethane - 3:3 - dicarboxylic acid salts of the 61(4-quinaldylamino)-hexyl-4-amino-quinaldinium derivative.
Patent GB-1279177-A (GB)
Title: Improvements in and relating to scraper conveyors
Inventor: BUTCHER RONALD
IPC: B65G19/24
Filed: 1970-05-07
Abstract: 1279177 Endless conveyers COAL INDUSTRY (PATENTS) Ltd 4 May 1971 [7 May 1970] 22052/70 Heading B8A Means for attaching a scraper conveyer flight bar (not shown), to a conveyer chain (not shown) comprises a tongue 2 whose head 4 has two grooves 5, 6 for receiving a chain link. The link is secured by a member 10 having a threaded bore 14 which receives a screw passed through the head 4. The body of the tongue 2 is attached to the flight bar by a bolt or other means passing through a hole 3.
Patent GB-882559-A (GB)
Title: Ball-point pens
IPC: B43K7/08
Filed: 1958-07-09
Abstract: 882,559. Reservoir pens. CIEREMANS, M. July 9, 1958 [July 13, 1957], No. 22083/58. Class 146(3)  A ball-point pen of the kind having a reservoir 1 wherein the ink 2 cannot form a stable meniscus, a follower member 4 which follows the ink as it is consumed and acts as a closure member, and a liquid cleaner 5 between the ink and the follower which clings to the wall of the reservoir with a greater force than that of the ink, is characterized in that the lower surface of the follower is provided with ribs, a tubular skirting, or other projections which subdivide the space adjacent the follower such that the liquid cleaner 5 is always held by capillary attraction to the follower. The ink 2 is based on the ethyl ether of diethylene glycol. The liquid cleaner 5 does not mix with the ink, is almost non-volatile, and may comprise paraffin oil, or more viscous hydrocarbon oils of the paraffin series. The follower 4 has a solid body of aluminium or plastic material, and is a sliding fit in the bore of the reservoir 1. As shown in Fig. 7, the follower 4 is a dish-shaped piston with a projecting spigot 9, the liquid 5 resting on the ink column 2 and being held by capillary forces around the piston, and between the spigot and the wall of the reservoir. A modified follower 4 has a piston-like body with a downwardly projecting portion of smaller diameter than the piston and provided with a conical nose. The follower piston 4, Fig. 8, has a number of ribs 6 on its upper and lower surfaces, so that liquid cleaner 5 can be retained above and below the follower. In another form, the follower 4 is provided with an annular skirt of reduced diameter, and the liquid 5 is retained between the skirt and the wall of the reservoir. Specification 766,695 is referred to.
Patent GB-169066-A (GB)
Title: Improvements in drip-catching devices for teapots, bottles and other liquid holding devices
IPC: A47G19/14
Filed: 1920-07-24
Abstract: 169,066. Melley, G. A. July 24, 1920. Drip-retaining devices. - A drip catching and redirecting device for bottles &c. comprises a sleeve-like portion 1 formed near one end with an integral inwardly-disposed flange 3 presenting flat upper and lower surfaces, and a thin flat rubber or other washer 4 clamped against the underside of the flange 3 and making a liquidtight connection with the exterior of the neck whereby drops of liquid which would otherwise run down the side of the neck, are caught and re-directed into the receiving vessel. A portion of the edge of the device may be formed into a spout to assist the re-direction of the liquid.
Patent GB-1018336-A (GB)
Title: Improvements in or relating to thread-tensioning devices for sewing machines
IPC: D05B47/00
Filed: 1964-05-28
Abstract: 1,018,336. Sewing machines. F. GEGAURF A. G. May 28, 1964 [Dec. 20,1963], No. 22189/64. Heading D1G. In a sewing machine thread tensioner of the kind described in Specification 960, 337 in which the thread at the inlet and outlet ends of the tensioner subtends an angle of less than 90 degrees, pressure is applied to the discs, mounted side by side on a pin, only on that side of the pin through which the thread passes. Disc 31 abuts a collar 30 rigid with the disc-supporting pin 22. Disc 32 is urged towards disc 31 by a spring-biased sleeve 33 having a sloping front face which contacts disc 32 only above pin 22. The thread 16 thereby lies in a downwardly-flaring opening between the discs and is therefore less liable to move outwards during use than in the conventional arrangement applying pressure symmetrically to disc 32. Reference has been directed by the Comptroller to Specification 960, 337.
Patent GB-336022-A (GB)
Title: Improvements in producers
IPC: C10J3/80
Filed: 1929-07-19
Abstract: 336,022. Lander, C. H., and Hurley, T. F. July 19, 1929. Producers.-A vertical gas producer has its fuel space 3 composed of side walls 4, 4a formed of I number of water tubes. The spaces between the tube banks and the casing 5, 5a are divided into a number of compartments 9, 11, the former series having inlets 6 for air or air and steam to pass between the tubes to the fuel chamber, and the latter having off takes 20. The banks of tubes are connected to headers 12, 12a, 12<b>, 12<c>, the lowest pair of which are connected to water chambers formed between the end walls of the chamber and inner partition members. The water system may form part, such as the high pressure water section, of a boiler plant.
Patent GB-1426434-A (GB)
Title: Television camera arrangements
IPC: H04N5/228
Filed: 1972-05-12
Abstract: 1426434 Cathode-ray tube circuits EMI Ltd 10 May 1973 [12 May 1972] 22280/72 Heading H4T To reduce " lag " in a television pick-up tube alternate lines in a given field are scanned twice, intervening lines being left unscanned, the video signals generated during the second scan of each line being rejected whilst those generated during the first scan are repeated (e.g. by means of a delay line) to provide a continuous line-by-line video signal output. Thus the residual charge left on the scanned lines after the first scan (the lag) are removed during the second scanning of such lines. The complete scanning sequence, which is produced by adding suitable auxiliary deflection waveforms to the normal field scanning waveform, comprises, in the first field, scanning lines 1, 1<SP>1</SP>, 5, 5<SP>1</SP>, 9, 9<SP>1</SP> &c. and in the second field, instead of scanning lines 2, 2<SP>1</SP>, 6, 6<SP>1</SP>, 10, 10<SP>1</SP> &c., scanning lines 3, 3<SP>1</SP>, 7, 7<SP>1</SP>, 11, 11<SP>1</SP> so that the two fields are symmetrically interlaced. The loss of vertical resolution which results from this.is stated to be of little significance when the invention is applied to the chrominance tube (or tubes) of a colour television camera which has a separate luminance pick-up tube.
Patent GB-668883-A (GB)
Title: Improvements in or relating to means for discharging material from a storage container
IPC: B65G65/00
Filed: 1949-08-27
Abstract: 668,883. Manure distributers. TEMPLE, P. L. Aug. 17, 1950. [Aug. 27, 1949] No. 22305/49. Class 6(i) [Also in Group XXX] Means for discharging material from a storage container comprise two oppositely rotating rotors which cause the material to be discharged between the rotors and walls at the discharge opening of the storage container in which a roller is mounted to ride on and between the two rotors and thus bridge the gap between the rotors and prevent the material being discharged between the rotors. The two rotors 1 have faces 3 intermeshing as shown in the Figure. A roller is mounted on end pins 5 so that, while it is always in contact with both rotors and is free to float in all directions, it cannot be moved out of position. Specification 647,952 is referred to.
Patent GB-479872-A (GB)
Title: Improvements relating to centrifugal separators
IPC: B04B1/20
Filed: 1936-08-13
Abstract: 479,872. Centrifugal separators. JORGENSEN, M. VOGEL-. Aug. 13, 1936, No. 22368. [Class 23] The conveyer flights 14, for moving the components of the material treated in a centrifugal separator to the discharge openings 16, 17, have resilient edges and are resiliently mounted, or the rotating casing 4 may have a resilient lining. The material is fed through the fixed tube 11 with a partition strip 12, to the tubes 13 as described in Specification 479,891. These tubes open into the space between the inner and outer bodies 1, 4 which rotate at different speeds, the ratio of which is determined by the gearing 8. The body 1 has a conical upper part and a cylindrical lower part and carries an helical rib 18. This is fixed directly to 'the upper part and to longitudinal ribs 19 on the lower part. Bolts 20 secure rubber blocks 21 with metal cover plates 24, and rubber supports 22, 23, to the helical rib 18; the blocks 21 form sections of the conveyer flights 14 and reach the inner wall of the casing 4.
Patent GB-223908-A (GB)
Abstract: 223,908. Siemens - Schuckertwerke Ges. Oct. 22, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings to Specification. Gearing for starting machinery.-In a method of starting the motion of machines driven through belt gearing or other frictional coupling- means, the driving-motor is retarded before, simultaneously with, or after the engagement of the friction means, and is accelerated again when relative motion ceases in the friction means. The retardation may be accomplished by reducing the power of the motor, by braking the motor mechanically or by throwing upon it an additional lead, or, in the case of electromotors, by counter current braking, over-excitation in direct current motors, charging of poles in three-phase motors, or switching over to a circuit with a lower number of periods. The retarding-means may be brought automatically into action when the friction coupling is engaged or before that time, under the influence of the speed of the parts, and thrown out of action as slip ceases or at a prearranged speed or time.
Patent GB-170142-A (GB)
Title: An improved miniature loom or the like weaving device
IPC: D03D29/00
Filed: 1920-07-28
Abstract: 170,142. Graham, J. July 28, 1920. Reeds.-A miniature loom or weaving-device has a frame 1 consisting of sheet metal preferably in one piece with stiffening-flanges 5 and supports 2,3,4 carrying the cloth beam, the healds 7, and the warp beam 6. The reed consists of two end strips 21 connected by bolts 23, on which are strung alternately washers and fingers 24. It may have a stop integral with one of the side bars to prevent undue movement towards the healds.
Patent GB-263745-A (GB)
Title: Improvements in or relating to electric ovens and radiators
IPC: F24C7/00
Filed: 1926-09-11
Abstract: 263,745. Beer, A. Dec. 31, 1925, [Convention date]. Resistance ovens; electric radiators. -A combined oven and radiator comprises an oven chamber with an opening on its lateral wall in which is mounted a heating element 23, and a pivoted reflector 12 which closes the opening and is operated to direct heat into the oven or into the room. The reflector may be locked in either position. The heating element is in the form of a bar connected by springs 22 mounted in sockets 21 engaging plugs 20 secured to arms 18 fixed to end plates 13 carrying the reflector. The plates 13 carry sleeves 14 journaled in the end plates of the oven. A grid 24 is fitted in front of the heating element.. The roasting split 27 engages slots 48 in the end plates 2 and may be fixed at different distances from the heating element. It is rotated by a clockwork mechanism 25 pivoted to one of the end plates. Boiling vessels may be piaced on a grid 34. A drip gutter 35 is situated under the grid. Liquids collecting therein may be poured into a vessel 39 fitted with a sieve 40 and discharging into a perforated pipe 42 in the tap of the oven. The vessel is supported on a hollow bracket 36 communicating with the interior of the oven. A sliding door 11 and lifting handles 8 are fitted to the oven.
Patent GB-625640-A (GB)
Title: Improvements in and relating to dishwashers or the like
IPC: A47L15/06
Filed: 1947-08-13
Abstract: 625,640. Washing dishes. HOLLERITH, C. Aug. 13, 1947, No. 22539. Convention date, Dec. 29, 1945. [Class 138 (ii)] [Also in Group XXIII] In a washing machine of the kind in which washing fluid is circulated in a vat by a centrifugal impeller situated above an opening in the base of the vat through which fluid is admitted and discharged, the impeller is closed on top and mounted in close proximity to the surface of the vat around the opening, the arrangement being such that when the impeller is rotated it sets up a pressure head around its outer periphery to prevent discharge of the fluid. The provision of a drain valve is thus rendered unnecessary. As shown, an impeller or agitator 22 is mounted on a spindle 20 of an electric motor 18 housed within a sump 14, which depends from a lower portion 10 of the vat of the dish washer. A centrifugal pump 24 having radial blades 32 is mounted immediately under the agitator in such a manner that the bottom edges of the blades 32 have a clearance fit over a conical wall 26 which defines a central drain opening 28 in the sump. The top of the centrifugal pump is closed and passages through which liquid can flow from the vat, when the motor is at rest, are provided through the radial channels formed by the blades 32 and the top of the pump.
Patent GB-299560-A (GB)
Title: Improvements in or relating to sliding and folding doors
IPC: E05D15/12
Filed: 1927-08-27
Abstract: 299,560. Astley, P. A., and Brook, W. D. Aug. 27, 1927. Sliding doors.-Each leaf or section b of a folding-sliding door, particularly for portable garages, is supported on an overhead rail by a roller-bearing pulley i on a spindle g connected to the bracket e which has a ball-bearing engagement with the headed cylindrical stud d on the door. The door when opened rests by the side wall, the two parts of the track being connected by a curved part a<1>. Each section has a guide pin or roller engaging a channel at the inside lower edge.
Patent GB-360010-A (GB)
Title: Improvements in or relating to the production of artificial yarns or threads
IPC: D01D5/20
Filed: 1930-07-26
Abstract: <PICT:0360010/IV/1> <PICT:0360010/IV/2> <PICT:0360010/IV/3> Artificial yarns of an irregular character not depending on variation in denier are formed by extrusion of two artificial filaments, feeding them in such manner that one is fed irregularly with respect to the other, and doubling them on a twisting and winding device whereby the faster fed forms slubs on the other.  More than two filaments may be extruded, at least one being fed irregularly.  The filaments may be of cellulose acetate or other derivatives of cullulose, and may be doubled with those of reconstituted cellulose such as viscose, nitrocellulose, or cuprammonium silk so that slubs are formed having different dyeing properties than those of the filament about which they are twisted.  As shown, filaments 13, 14, drawn from a jet of the kind described in Specification 344,351, are led over a feed roller 16 having parts of different diameter and are doubled by a cap spindle apparatus, the filament 13 which is fed by the smaller part of the roller 16 being deflected by a cam-operated bar 24 or by a similarly operated guide 36, Fig. 4, arranged above an elongated guide 34 so as to vary its rate of feed.  Specification 321,762, [Class 2 (ii), Cellulose &c.], is referred to.
Patent GB-366443-A (GB)
Title: Manufacture of hydroxycarboxylic acid esters
IPC: B04B15/06
Filed: 1930-07-28
Abstract: Hydroxycarboxylic acid esters are made from the corresponding nitriles, alcohols, water and acids--except hydrohalogen acids--in which the water required for the reaction is added wholly or in part in the form of aqueous nitrile or aqueous alcohol or aqueous acid. The aqueous nitrile, alcohol and acid, e.g. sulphuric, phosphoric, or oxalic, may be run in molecular proportions into a solvent, e.g. alcohol, benzene, or the esters themselves. Elevated temperatures and pressures may be applied.  In example (1) aqueous lactic acid nitrile (from aldehyde and hydrocyanic acid), alcohol and sulphuric acid are run into ethyl lactate under specified conditions, (2) aqueous lactic acid nitrile and sulphuric acid are run slowly into butyl alcohol, the temperature not exceeding 130 DEG  C.  Mandelic acid nitrile is also mentioned as a starting material.
Patent GB-400746-A (GB)
Title: Improvements relating to fixing devices for use in connection with electric tumbler-switches, bell-pushes and socket couplings
IPC: H02B1/42
Filed: 1932-08-13
Abstract: 400,746. Switch bases; plug couplings. CRABTREE, J. A., Endwood, Little Aston Park, Sutton Coldfield. Aug. 13, 1932, No. 22704. [Class 38 (v).] The straps or plates a which are used for securing a tumbler switch, bell push or the socket portion of a coupling to a support or within a wall-box or conduit-box, and which have holes at each end, one for the reception of a screw c fixing the strap to the switch and one e for the reception of a screw passing by the side of the switch into the support, have flanged edges a<1> adapted to bear against an extension b<1> of the bridge or like member to prevent rotational displacement of the strap. The screw c may be the screw which fixes the bridge to the base of the tumbler switch, and the hole for the screw c or the hole e may be elongated to allow for longitudinal adjustment. Specification 144,352, [Class 38 (v), Electric switches &c.], is referred to.