baber/WOPTO huggingface dataset:
Patent GB-804421-A (GB)
Title: Improvements in or relating to means for measuring or controlling the relative humidity of a gaseous atmosphere
Inventor: WADE SYDNEY WILLIAM
IPC: G01N25/64
Filed: 1954-03-15
Abstract: 804,421. Electric measuring systems. ELLIOTT BROS. (LONDON), Ltd. June 15. 1955 [March 15, 1954], No. 7525/54. Class 40 (1), Apparatus for determining the relative humidity of an atmosphere comprises a bridge (Fig. 1) having a resistor 3 sensitive to the dry temperature in one arm, a resistor 2 sensitive to the wet temperature in an adjacent arm, the remaining arms containing fixed resistors 6, 7, and the two branches being interconnected by potentiometers 1, 4, the unbalance current being taken from the sliders 8, 5 of the potentiometers and causing a motor 10 to drive the slider 8 of potentiometer 1 to balance the bridge, it being shown that when a specified relationship exists between the resistances in the circuit the position of slider 8 at balance is indicative of the relative humidity when the slider 5 is manually located in accordance with the ambient dry temperature, or a relative humidity value which is to be maintained constant. The movements of sliders 8, 5 are stated to be linearly related for small variations in temperature, so that both sliders may be driven by the motor 10 if the potentiometers are correctly proportioned, to obtain automatic compensation for small temperature variations. To obtain more accurate temperature compensation the potentiometers may be non-linear, and variable resistors may be introduced in series with the temperature-sensitive resistors 2, 3 whose values can be adjusted in accordance with the ambient temperature manually or automatically by a secondary, temperaturemeasuring bridge. In an alternative arrangement (Fig. 3) resistor 4 is replaced by variable resistor 14, which is also manually or automatically adjusted in accordance with the ambient temperature. The humidity of a number of different gases may be measured using separate bridges with common potentiometers 1, 14 connected to measure the humidity of the desired gas by a multiple switch.
Patent GB-735429-A (GB)
Title: Cyclopentanophenanthrene derivatives and improved process for making same
IPC: C07J75/00
Filed: 1952-03-24
Abstract: The invention comprises compounds of the formula <FORM:0735429/IV (b)/1> (wherein X is >CH2 or >C = O, and R is the residue of a lower fatty acid having up to 6 carbon atoms), together with a process for the preparation of 21-esters of D 4-pregnene-17a : 21-diol-3 : 20-dione and D 4-pregnene-17a  : 21-diol-3 : 11 : 20-trione, which comprises dibrominating an ester of allopregnane-17a  : 21-diol-3 : 20-dione or -3 : 11 : 20-trione, treating the resultant 2 : 4-dibromo compound with an alkali metal iodide to yield the corresponding 2-iodo-D 4-pregnene derivative, and finally eliminating the iodine atom by use of a reducing agent, e.g. sodium bisulphite or chromous chloride.  In examples (1) allopregnane - 3 : 20 - dione-17a  : 21-diol 21-acetate is brominated in chloroform-acetic acid containing hydrogen bromide, yielding 2 : 4-dibromoallopregnane-3 : 20-dione-17a : 21-diol 21-acetate, which is refluxed with sodium iodide in acetone, and the resultant 2 - iodo - D 4 - pregnene - 3 : 20 - dione - 17a  : 21-diol 21-acetate refluxed with aqueous sodium bisulphite and dioxan, giving D 4-pregnene-3 : 20-dione-17a  : 21-diol 21-acetate; Allopregnane - 3 : 11 : 20 - trione - 17a  : 21 - diol 21-acetate is treated as in (1) employing chromous chloride for the final reduction step, yielding D 4 - pregnene - 3 : 11 : 20 - trione - 17a  : 21-diol 21-acetate. Specifications 698,952 and 712,058 are referred to.
Patent GB-1049961-A (GB)
Title: Improvements in or relating to toy vehicles
Inventor: MILLS AUBREY ROBERT
IPC: A63H17/00
Filed: 1965-02-22
Abstract: 1,049,961. Toy vehicles. DIE CASTING MACHINE TOOLS Ltd. and A. R. MILLS. Nov.10, 1965 [Feb. 22, 1965], No. 7578/65. Heading A6S A toy vehicle having a rigid base 10 and a resilient plastics member 12 secured on a post 11 thereto and straddling an axle 18 to hold it resiliently down to said base 10.
Patent GB-638725-A (GB)
Title: Improvements in safety devices for knitting machines
IPC: D04B35/18
Filed: 1948-03-13
Abstract: 638,725. Knitting-machines. MOULDS, B. March 13, 1948, No. 7697. [Class 74 (ii)] A detector for operating a stop motion of a flat machine in the event of a load-up, displaced needle or other obstruction in the needle bed comprises a feeler 7 supporting an element 16, deflection of the feeler 7 releasing, the element 16 to operate the stop motion. The feeler 7 is pivoted at 6 and is in two parts 7a, 8 finely adjustable longitudinally. In one embodiment the feeler is carried on a plate 1 secured to the cam carriage. The element 16 slides in guides 17, 18 on an arm 1b of the plate 1 and has a hooked portion 14 engaging the upper end of the feeler 7. When released by the swinging of the feeler 7, the member 16 falls and pulls on a cord 30 to operate the stop motion. In another embodiment, the plate 1 is flat and the member 16 slides in guides secured to its back. The member 16 carries contacts which, in falling, it brings into engagement with a wire stretching along the needle beds to cause stopping of the machine by making or breaking a circuit. In another form the member 16 may be normally horizontal and pivoted to the upper end of the feeler 7. Movement of the latter causes vertical slots in the member 16 to be engaged by its supports to permit it to fall.
Patent GB-578682-A (GB)
Title: Improvements in the process of making sulphaguanidine
IPC: C07C311/64
Filed: 1944-04-25
Abstract: Sulphanilylguanidines are prepared by subjecting an acylsulphanilylguanidine such as N4-acetylsulphanilylguanidine to hydrolysis in an aqueous solution of an alkali metal hydroxide at a temperature within the range 50-100 DEG  C., using an amount of alkali corresponding to 50-100 parts by weight of alkali per 100 parts by weight of acylsulphanilylguanidine.  It is stated that in the operation of the process of this invention temperature control is important, and the preferred temperature range is 65-85 DEG  C.  The control of the amount of alkali is also an important feature. Examples are given of the hydrolysis of N4-acetylsulphanilylguanidine under the above conditions, using sodium hydroxide as the hydrolysing agent.
Patent GB-145839-A (GB)
Title: Improvements in and relating to x-ray apparatus
IPC: H05G1/06
Filed: 1919-03-27
Abstract: 145,839. British Thomson - Houston Co., (General Electric Co.). March 27, 1919. Vacuum or low-pressure apparatus, arrangements of; transformers. - In a self-contained portable X-ray apparatus, the tube 1, as well as the transformer 11, 12, is immersed in oil or like 23 in an earthed container 16, the dielectric strength of the oil not only allowing the tube terminals to be nearer together than their normal air gap distance, but serving also to cool down the anode 6, which is connected to the exterior of the tube by a pipe &c. 7 of copper or some other good heat conductor. The cathode works at incandescence and is heated by a current passing from a coil wound round the transformer core so that its voltage varies with the variable voltage impressed on the primary circuit.
Patent GB-228389-A (GB)
Title: Improvements in roller stands for drawing frames or like machines for drawing cottonand other fibrous materials
IPC: D01H5/22
Filed: 1924-03-28
Abstract: 228,389. Platt Bros. & Co., Ltd., and Hall, H. P. March 28, 1924. Rollers and roller heads.-A roller stand for a drawing-frame or like machine such as a ribbon lap or a mÚlange machine, is provided with a front guide 13, Fig. 1, for guiding the front rollers 15, and a steel upright 14 serving to guide the front rollers and also to support the covers or flats 16, the members 13, 14 being formed separately from the base portion 12 of the stand. The upper surface 121, Fig. 2, of the base portion 12 is formed with a central rib 122 and slide-faces 123, 124, the foot 131 of the front guide 13 which fits thereon being formed with a co-operating groove 134, Fig. 4, and plane faces 135, 136. The guide 13 is also formed with a vertical face 133 for guiding the rollers 15, and a horizontal face 137, Fig. 3, on which the upright 14 is applied. The upright 14 is formed with a vertical guide face 141, and together with the guide 13 is held in position on the base 12 by a bolt 18. The bearing block 17 for the bottom front roller 15 is formed with a recess 171 to accommodate, the head 183 of the bolt 18. The other rollers 19, 20, 21, the clearer 29, and the covers or flats 16 are mounted in the ordinary manner.
Patent GB-1061127-A (GB)
Title: Device for sealing an electric lamp envelope and electric lamp made with such a device
IPC: H01J9/32
Filed: 1965-02-24
Abstract: <PICT:1061127/C1/1> One of the pinching jaws used to pinch-seal the lamp envelope and simultaneously to seal-in the leading-in wire or wires is provided with a transverse metal blade to stop the flow of softened glass towards the end of the lamp.  For producing a stem press rectangular cross-section, the jaws 4, 5 have lateral extensions 8, 9.  The jaw 4 carries a blade 12 with a slot 13 having a funnel-shaped opening 14 to receive the leading-in wire 2.  To produce a stem press of I-shaped cross-section, two pairs of jaws moving at right-angles may be used, one pair of which is first brought into contact with the softened glass 3 of the stem.  The glass 3, which may be quartz, is then pressed by the second pair of jaws which are similar to the jaws 4, 5 but without the lateral extensions and one of which carries the slotted blade.  The jaws are of brass and the blade of stainless steel.
Patent GB-572546-A (GB)
Title: Automatic gun
IPC: F41A15/10
Filed: 1940-08-09
Abstract: 572,546. Automatic guns. DOBREMYSL, J. Aug. 9, 1940, No. 7955/41. Divided out of Complete Specification of 572,536. [Class 92 (ii)] Relates to cartridge case extractors 14 for automatic guns having a transversely-sliding breech-block 2, and consists in operating the extractor by a lever 15, one end of which lies in the path of the breech-block, the other end carrying a spring pawl 16 which engages the extractor with a slip movement past an edge 19 to permit return of the extractor to normal position under the action of its controlling spring 18. The lever 15 is returned to the position shown when the breech-block closes. Specification 572,536 is referred to.
Patent GB-633102-A (GB)
Title: Improvements in or relating to impact breaking or crushing machines
IPC: B02C13/282
Filed: 1947-03-24
Abstract: 633,102. Pulverizing. PATTINSON, G. H. March 24, 1947, No. 7973. [Class 59] An impact breaker of the rotary type wherein a rotor having a series of radial hammers revolves within a housing or casing having a roughened or ribbed interior surface constituting an anvil against which the material to be broken or granulated by impact is thrown by the heads of the revolving hammers, has the anvil or striking surface formed by a number of attrition-resistant blocks detachably mounted side by side so as to form a striking surface for the material which is impacted by the hammer heads, some at least of the blocks employed being provided on their striking surfaces with recesses shaped so as to retain some of the crushed or broken material, thereby forming a protecting layer for the anvil or striking surface. Anvil blocks 4a, 4b, 4c and 4d with pocket-like recesses 8 adapted to retain the material thrown thereagainst and are detachably mounted alternatively with anvil blocks 4e, 4f, 4g and 4h having recesses 9 which merge with the recesses 8. Sides 12 of the blocks 4a, 4b, 4c and 4d are so inclined as to direct material into the recesses. Specification 489,678 is referred to.
Patent GB-566810-A (GB)
Title: Method of and preparations for improving the whiteness of materials
Filed: 1943-05-20
Abstract: A process for improving the whiteness of materials such as paper, textiles, starch or sugar, comprises treatment with a small proportion of a blue-fluorescent substance in admixture with a blueing agent.  Specified fluorescent substances are hydroxy coumarins, e.g. umbelliferone or b -methyl-umbelliferone, 1-naphthylamine-4-sulphonic acid and sodium 2 - naphthylamine - 6 : 8 disulphonate and specified blueing agents are the customarily used ultramarine, indigo and alizarin dyestuffs.  Materials such as textile yarns or fabrics or paper are advantageously treated with such a mixture applied in slightly alkaline aqueous solution in an amount corresponding to about 0.001 to 0.1 per cent of the blue-fluorescent substance per weight of the material to be treated. In an example, new white cotton fabrics are washed with soap ten times, rinsing three times in clean water after each wash, dried, ironed, rinsed in an aqueous blueing solution slightly alkaline, e.g. with borax or sodium carbonate containing 0.01 per cent of beta-methyl-umbelliferone and 0.004 per cent ultramarine, dried and ironed.  Specification 522,672 is referred to.ALSO:A process for improving the whiteness of materials such as paper, textiles, starch or sugar, comprises treatment with a small proportion of a blue fluorescent substance in admixture with a blueing agent.  Specified fluorescent substances are hydroxy coumarins, e.g. umbelliferone or b -methyl-umbelliferone, 1-naphthylamine-4-sulphonic acid and sodium 2 - naphthylamine - 6:8 - disulphonate and specified blueing agents are the customarily used ultramarine, indigo and alizarin dyestuffs. Materials such as textile yarns or fabrics or paper are advantageously treated with such a mixture applied in slightly alkaline aqueous solution in an amount corresponding to about 0.001 to 0.1 per cent of the blue-fluorescent substance per weight of the material to be treated.  In an example, new white cotton fabrics are washed with soap ten times, rinsing three times in clean water after each wash, dried, ironed, rinsed in an aqueous blueing solution slightly alkaline, e.g. with borax or sodium carbonate containing 0.01 per cent of beta-methyl-umbelliferone and 0.004 per cent ultramarine dried and ironed.  Specification 522,672, [Group VIII], is referred to.ALSO:A process for improving the whiteness of sugar comprises treatment with a small proportion of a blue - fluorescent substance in admixture with a blueing agent.  Specified fluorescent substances are hydroxy coumarins, e.g. umbelliferone or b -methyl-umbelliferone, 1-naphthylamine-4-sulphonic acid and sodium 2 - naphthylamine - 6 : 8 disulphonate and specified blueing agents are the customarily used ultramine, indigo and alizarin dyestuffs. Specification 522,672 is referred to.
Patent GB-529238-A (GB)
Title: Mounting of internal combustion engines on automobile chassis
IPC: B60K5/12
Filed: 1939-03-13
Abstract: 529,238. Mounting engines. BOWER, G. S. and WHYMAN, G. H. March 13, 1939, No. 8012. [Class 79 (iii)] The engine unit of a vehicle is mounted so as to rock about a longitudinal axis O downwardly inclined towards the rear of the unit and passing at a distance h from the centre of mass G of the unit, this distance h being determined according to one of two formulae given in the Specification. If the engine supports or bearings are rigid sideways one formula is used, but if the engine is mounted on rubber blocks at both ends the other formula is used. The engine may be mounted as shown diagrammatically, being supported at the front by a rubber trunnion F' and at the rear by a rubber block H, side movement being restrained by rubber blocks H<SP>2</SP>.
Patent GB-116335-A (GB)
Title: Improvements in Spring Forks for Cycles and Motor Cycles.
Inventor: YOXALL HENRY SMALLWOOD
IPC: B62K25/24
Filed: 1917-06-05
Abstract: 116,335. Yoxall, H. S., and Richardson, J. J. June 5, 1917. Spring devices.-Link-mounted spring forks for motor and other cycles, of the kind wherein one element of the linkage is fitted with a'yielding connexion to provide for the absorption of horizontal, as well as vertical, shocks, are furnished with a duplex springing-system wherein one or more light springs are first compressed or put in tension and then a main spring comes into play to absorb the shock, the light springs serving to take up minor shocks or a light load. As shown, the movement of the fork slide 3 upon the link 1 is controlled by a main spring 5 and a light spring 6, which are separated by a loose piece 7, the reaction being taken by a spring 12 in front of the slide. To limit the extent to which the light spring can be compressed, its abutments may have projections as 8, 10. A main, and a light spring may be used to take up reaction shocks, and, in place of helical springs, rubber buffers, leaf springs, cee springs, or a helical spring with levering-arms may be employed. Specifications 17583/14 and 116,153 are referred to.
Patent GB-921847-A (GB)
Title: Improvements in devices for controlling a headlight adjustment system according to the load on the vehicle carrying the headlights
IPC: B60Q1/115
Filed: 1961-03-06
Abstract: 921,847. Thermal switches. P. CIBIE. March 6, 1961 [March 15, 1960], 8100/61. Class 38 (5). [Also in Group XXXVIII] Two bimetallic strips BL31 and BL32, Fig. 3, position a contact C3 of a follow-up switch in accordance with the currents flowing in heating coils R31, R32 mounted on them. Alternatively, the two heating coils may be mounted on the one strip BL3, Fig. 2. The switch is used in a system for positioning vehicle headlamps in accordance with axle loading (see Group XXXVIII).
Patent GB-474802-A (GB)
Title: Improvements in water level alarm mechanism
IPC: F22B37/42
Filed: 1937-03-19
Abstract: 474,802. Float - actuated valves. YARNALL-WARING CO. March 19, 1937, No. 8120. Convention date, Feb. 8. [Class 135] [Also in Group XVIII] High and low water alarm mechanism for steam boilers employs a pair of vertically spaced weights operating, by change of buoyancy when submerged, to control the admission of steam to a whistle. A water column 10 connected to the boiler is closed by a cap 19 having spaced lugs 22 supporting a knife-edged fulcrum 23 for levers 24, 25 moving in parallel vertical planes. Each lever carries a pin 27 or 28 projecting into a horizontal slot in a yoke 31 carried by the stem 33 of the valve admitting steam to the alarm. The line joining the centres of the pins 27, 28 passes through or near the fulcrum axis 26 and the same line passes through the knife - edged pivots from which weights 40, 41 are supported, each by two chains from the ends of the levers 24, 25. The chains for each weight are connected to one end of one lever and to the opposite end of the other lever, respectively. The lower weight 41 is carried by a T-rod 47 passing through an opening in the upperweight. The chains are connected to the cross-bar 51 by pins passing through the links into the ends of the bar in such a manner that lateral play is avoided. Axial play of the levers 24, 25 is prevented by projecting studs having convex surfaces which are in contact, or alternatively, the levers may be separated by balls with which they are in contact. The arrangement of the fulcrum 26, pins 27, 28 and the weight-suspension pivots on the same straight line ensures increased sensitivity, and suitability for use at very high pressures.
Patent GB-526374-A (GB)
Title: Rotary internal combustion engine
IPC: F02B53/00
Filed: 1939-03-14
Abstract: 526,374. Rotary engines. TIPS, M. March 14, 1939, No. 8196. Convention date, March 18, 1938. [Class 110 (ii)] An internal combustion engine comprises a rotor 12 eccentrically positioned in a stator 10, having vanes 22 pivoted on a fixed shaft 21 which is concentric with the inner bore of the casing. The vanes slide between members 25 and co-operate with a rotary abutment 49 driven by bevel gearing, placed between inlet and exhaust ports 48, 47. The rotor is mounted in bearings 15, 16, in the casing end walls 17, 18. Members 25 are mortised cylinders provided with packing pieces 36 at the sides and edges. Packing pieces 37 in the tip of each vane are balanced centrifugally (Fig. 4) by means of a weight 39 through rocking bars 41 pivoted in fixed partitions' 38. A spring 43 presses the weight 39 inwards. An adjusting screw 45 is provided. Further packings 46, 66, 67 are provided. Combustion chambers 52 extend transversely through the rotor between each pair of vanes and terminate in ducts 53. Ducts 54 in the rotor allow compressed air, or fuel gas, to pass into a combustion chamber 52 when in augment. Packing 55 is provided, to be forced against the stator wall. When operating as a diesel engine, oil is injected through the ducts 53. Sparking plugs 57 may be used. Cooling oil is forced by a pump 59 through a pipe 61 into chambers 58 which surround the combustion chambers, and returns to the pump via ducts 65. Grooves 68 in the walls 19, 20, allow compressed air, or fuel gas, to fill chambers 52. The capacity of a compression chamber is adjusted by means of a cylinder 70 with a piston 71 on a threaded spindle which may be rotated by a handwheel. Passages 73 connect the cylinder with the interior of the engine. Where the engine is fitted to an aircraft, bullets may be fired through the hollow shaft 21.
Patent GB-1190483-A (GB)
Title: Measuring Instrument for Thermo-Luminescent Dosimeters.
IPC: G01T1/115
Filed: 1968-02-20
Abstract: 1,190,483. Transistor switching circuits. MANUFACTURE BELGE DE LAMPES ET DE MATERIEL ELECTRONIQUES. A, EN ABREGE " M.B.L.E." 20 Feb., 1968 [22 Feb., 1967], No. 8254/68. Heading H3T. [Also in Divisions C4 and G3] A constant current is maintained through the heating element of a thermoluminescent dosimeter 4 by a series transistor 17. The voltage across the dosimeter is compared with a constant voltage from a potentiometer 18, 19 applied through a diode 25 and the output of transistor 11 amplified by transistors 23, 24 and applied to transistor 17. When the resistance of the dosimeter element reaches a predetermined value its current is cut off to prevent overheating.
Patent GB-1069379-A (GB)
Title: Substituted dialkyl-sulphoxides and sulphones
IPC: C07D309/20
Filed: 1966-02-24
Abstract: The invention comprises compounds of formula R-CH2-S(O)n-CH3 wherein R is a 5- or 6-membered heterocyclic ring containing one oxygen or sulphur atom as its hetero-atom and n is 1 or 2, and their preparation by oxidation of a corresponding compound of formula RCH2SCH3.  The compounds of the invention have antiinflammatory and analgesic activity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral, parenteral or topical administration.
Patent GB-324569-A (GB)
Title: Improvements in or connected with cutting machines for use in mining coal and other minerals
IPC: E21C31/00
Filed: 1929-03-14
Abstract: 324,569. Mavor & Coulson, Ltd., and Marples, B. March 14, 1929. Attachments for drilling. - In a coal-cutting machine with a reversible electric or other drive for the cutter, and with means for connecting flexible shafting so that a drill may be operated by the motor of the machine, alternative connections for the flexible shaft are provided so that said shaft may be driven in the same direction whichever drive is in use for the cutter. In Figs. 1 and 3 a bevel pinion 2 is driven by a bevel gear A, which may be the driving gear for the sprocket shaft of a cutter chain, and is integral with a threaded socket B for connection of a flexible shaft; through pinions 4, 5 a similar socket 6 is driven in the reverse direction. In Fig. 6, further sockets 9, 10 are provided and are driven through pinions 7, 8 at a speed different from that of the sockets B, 6. A clutch may be provided to control the drill and may be arranged in the drill or at the machine end of the flexible shafting and under control of a Bowden wire etc.; the drive may be applied only when the clutch is held engaged by the operator. The sockets may be employed for adjusting the cutter member when the motor is stopped. Specification 266,534 [Class 68 (i), Excavating earth &c.] is referred to.