baber/WOPTO huggingface dataset:
Patent GB-694600-A (GB)
Title: Improvements in or relating to a gauge for testing surface finish
IPC: G01B13/22
Filed: 1951-03-27
Abstract: 694,600. Gauges for testing surface finish. SHEFFIELD CORPORATION. March 27, 1951 [April 4, 1950], No. 7056/51. Class 106 (ii). A surface roughness gauging device for application to a surface to gauge its finish in terms of fluid leakage, comprises a gauging head 17, Fig. 1, having a recess 19 in which there is a ring of yielding material 20 supporting a thin centrally perforated sheet of metal 21, the size of the ring 20 being such that the thin metal sheet 21 normally extends beyond the head 17 but when the device is pressed against a surface 23 under test, Fig. 3, the ring 20 is compressed until the head 17 engages the surface 23. Uniform conditions of pressure between the thin metal sheet 21 and the surfaces tested is thus ensured for each test. The metal sheet 21 has an annular rib 32, Fig. 5, projecting from its outer face to space the remaining portion of the sheet 21 from the surface under test. Air under pressure is applied to the end 13 of the device and, when pressed against a surface 23, the air leakage taking place through crevices in the surface 23 beneath the rib 32 is a measure of the surface finish. A spring-pressed plunger 28 is carried by the device and normally projects through the centre of the sheet 21 to protect the sheet from damage. The sheet 21 is quite thin so that it can bend to conform to a curved part having a radius of curvature of several inches. The sheet 21 may have an outside diameter of one-quarter of an inch, a rib width of one-sixty-fourth of an inch, and a thickness of about two-thousandths of an inch. Specification 654,782 is referred to.
Patent GB-565881-A (GB)
Title: Improvements relating to apparatus for comparing the dimensions of objects
IPC: G01B11/26
Filed: 1943-05-05
Abstract: 565,881. Photo electric apparatus for comparing dimensions of objects. MORRIS MOTORS, Ltd., and SKINNER, P. G. May 5, 1943, No. 7133. [Class 40 (iii)] A photo-electric apparatus for comparing the dimensions of objects, especially for comparing similar workpieces produced in large quantities with a standard pattern comprises a pair of levers d, q, Fig. 1, each interconnecting a feeler e or r with a shutter f or s, the feelers being adapted to co-operate respectively with the object to be examined and with a pattern, and the shutters being adapted to form between them a variable light aperture. As shown, the lever d has its fulcrum c between the shutter and the feeler, and the feeler e bears against a workpiece o. The lever q has its fulcrum p and the shutter s at opposite ends, and its intermediate feeler r bears against a standard pattern m. The workpiece and the standard pattern are carried by a base-piece l slidable under the levers, so that the feelers are drawn along the workpiece and the standard pattern to compare their profiles. If there is agreement, the shutters remain equally spaced; any lack of agreement causes the shutter to increase or reduce the gap between them. A light beam is directed from a lamp i, Fig. 2, by lenses through the gap between the shutters f, s to a photo-electric cell k, which detects variations of illumination due to variations of spacing between the shutters. A suitable circuit is indicated in Fig. 3, the photo-electric cell k is connected as shown by means of tapped resistances xy, vu to a galvanometer t and terminals w, to which, source of direct current is connected.
Patent GB-750848-A (GB)
Title: Improvements relating to observation mirrors for use on road or other vehicles
Inventor: GAMMON ROBERT GORDON
IPC: B60R1/08
Filed: 1954-03-11
Abstract: 750,848. Look-out reflectors and anti-dazzle devices for vehicles. TUDOR ACCESSORIES, Ltd. Feb. 18, 1955 [March 11, 1954], No. 7143/54. Class 103 (2). An observation mirror for a road or other vehicle comprises a casing in which a reflector is pivotally mounted, the reflector being retained on either of two mounting positions by means comprising a tongue connected to the reflector and having a lip part engageable with an edge portion of the casing to hold the reflector in either position. As shown, a silvered glass reflector 1 of pneumatic form is secured to a backing-plate 2 and contained in a casing comprising a front part 5 and a rear part 4. The upper edge of the reflector is maintained in contact with an edge of the rear part 4 by means of two tension springs 6 connected at the bottom to lugs 9 pressed out from the backing-plate and at the top to lugs 10 pressed out of the rear part 4. The backing-plate at its centre part has two spaced slots 12, 13, and the part between the slots is pressed out to form a guide for a tongue 14. The tongue is urged upwardly by a spring 16. At the lower end the tongue has a lip part 21 and a tab 22 which projects through slots 19, 20 in the two parts of the casing. The lip part 21 has two surfaces, one or other of which engages the back edge of the slot 19 to retain the tongue and thus the reflector in either of the two limit positions. The backing plate, instead of being attached to the rear part of the casing by springs may be hinged thereto. Also the tongue may be integral with the backing-plate provided that the latter is resiliently connected to the casing.
Patent GB-1039452-A (GB)
Title: Amide colour couplers
Inventor: ANDERSON BRIAN
IPC: C07C275/42
Filed: 1964-02-20
Abstract: Novel colour couplers of the formulae <FORM:1039452/C2/1> wherein X is hydrogen or C1- 3 alkyl, Y is -CO- when X is hydrogen and Y is -O2S- when X is C1- 3 alkyl, R is an alkyl group of 12 or more carbon atoms or a group containing same (e.g. an alkylphenyl group) and B is a colour coupler residue such that B-H or B-NH2 are compounds which will react with the oxidation products of N,N-diethyl-paraphenylenediamine, formed during the development of a silver salt image with that compound, to yield a quinone-imine or azamethine dyestuff, are prepared by condensing a compound of the formula <FORM:1039452/C2/2> with a compound B.NH2 at temperatures below and above 100 DEG  C., respectively.  Compounds of Formula II may be converted to those of Formula I by treatment with a solution of alkali and subsequently acidifying.  Compounds of Formula I may be converted to those of Formula II by heating the former in a solvent at a temperature exceeding 100 DEG  C.  Compounds of the formula B-NH2 are preferably those also containing a -COCH2CO- group, a cyanacetyl group, or a pyrazolone ring, or are phenols and 1-naphthols containing an amino group.  4 - (4 - Dodecylphenylaminocarbonyl)- and 4-(n - octadecylaminocarbonyl) - phthalic anhydrides are prepared by refluxing the corresponding acids with thionyl chloride and acetyl chloride respectively.  4 - (4 - Dodecylphenylaminocarbonyl)- and 4-(n - octadecylaminocarbonyl) - phthalic acids are prepared by hydrolysis of the corresponding phthalimides.  4 - (4 - Dodecylphenylaminocarbonyl)- and 4-(n - octadecylaminocarbonyl) - phthalimides are prepared by reacting phthalimide-4-carboxy chloride with para-dodecylaniline and n-octadecylamine respectively.  4 - Chloro - 1 - hydroxy - 2 - N - (3 - aminobenzyl) - naphthamide and 1 - phenyl - 3 - (3-amino - 4 - chloro) - benzoylamino - 5 - pyrazolone are prepared by reduction of the corresponding nitro compounds.  1 - Hydroxy - 4 - chloro - 2 - N - (3 - nitrobenzyl)-naphthamide is prepared by reacting 3-nitrobenzylamine with phenyl-1-hydroxy-4-chloro-2-naphthoate. Phthalic anhydride - 4 - N - methyl - N - (4-dodecylphenyl)sulphonamide is prepared by reacting phthalic acid-4-N-methyl-N-(dodecylphenyl)sulphonamide with acetyl chloride. Phthalic acid - 4 - N - methyl - N - (dodecylphenyl)-sulphonamide is prepared by methylating phthalic acid 4 - N - (4 - dodecylphenyl)-sulphonamide with methyl iodide.  1 - Phenyl - 3 - (3 - nitro - 4 - chloro)benzoyl-amino-5-pyrazolone is prepared by reacting 5-nitro-2-chlorobenzoyl chloride with 1-phenyl-3-amino-5-pyrazolone and diethyl oxalate.
Patent GB-455492-A (GB)
Title: Improvements in or relating to electric signal transmission lines
IPC: H03H11/12
Filed: 1935-03-07
Abstract: 455,492. Loading. BLUMLEIN, A. D., 32, Audley Road, Ealing, London, and HARDWICK, J., 21, Drayton Park Avenue, West Drayton, Middlesex. March 7, 1935, Nos. 7206 and 32791. [Class 40 (iv)] A transmission line is corrected for variations of wave velocity and attenuation at the low and high frequencies of a wide band by the insertion of spaced loading networks which modify the constants of the line for those frequencies. In Fig. 2, the constants of the line are represented by the elements in the dotted rectangle, and it is shown that the correction for low frequencies may be obtained by the addition of series capacity C<1> equal to 4L/R<2>, these quantities being per unit length, or, if the leakance G is not negligible, by series capacity C<1>= C / (R/2 #C/L - G/2 #L/C)<2> shunted by resistance G<1>=GC<1>/C. At high frequencies, due to the skin effect, the line is represented by the elements in the dotted rectangle in Fig. 3, and the correction for these frequencies is obtained by the addition of series resistancecondenser networks R1, C1, &c., where C1L1 = R12 &c. The loadings should be so spaced that the added impedance is small compared with the characteristic impedance at a frequency corresponding to a wave length of four times the loading distance. Corrections may be made for capacities of the networks to earth and temperature effects. Dielectric loss at very high frequencies may be allowed for by considering it as an increase of effective series resistance. Instead of the series resistancecondenser networks of Figs. 2, 3, equivalent shunt resistance-inductance networks as shown in Figs. 4, 5 may be employed, or the correction for low or high frequencies may be made partly by one form of network and partly by the other form. The loading distance for resistanceinductance loading should be small compared with the wavelength corresponding to a frequency A /B, A being a loading resistance and B the associated inductance. If the high frequency correction is such that GL=RC, no correction for low frequencies is necessary. As shown in Fig. 1, the corrected line is fed through a coupling condenser 6 connected to one wire, the other wire being earthed. The termination comprises condensers 11, 12 having a capacity equal to the equivalent capacity of the line and a series resistance 13 equal to the high frequency surge impedance. In the modified termination shown in Fig. 6, an autotransformer 17 is employed and the resistance 13 is shunted by a condenser 18, so that a voltage step-up for the higher frequencies is obtained. A similar auto-transformer may be inserted at the sending end to give a voltage step-down for the higher frequencies. In a cable of the concentric type, the loading is preferably applied only to the central conductor. In a balanced line, the series loads are inserted in each wire. This applies also to a line comprising three wires, two of which are used as a side circuit and as one leg of a phantom circuit completed by the third wire.
Patent GB-902768-A (GB)
Title: Rubber antidegradants
Inventor: HUGHES SHEILA ANN
IPC: C08K5/18
Filed: 1960-03-01
Abstract: Rubber has incorporated therein as an antidegradant a p-phenylenediamine of formula <FORM:0902768/IV(a)/1> where R and R1 are alkyl groups (the same or different) of 3 to 6 carbon atoms each and R2 is an alkyl or cycloalkyl group the total number of carbon atoms in R, R1 and R2 being at least 10 but not more than 16, or a salt of such a p-phenylene-diamine.  Specified rubbers are natural rubber, polybutadiene, polyisoprene, and copolymers of butadiene with styrene, acrylonitrile, isobutylene or methyl methacrylate. Specified diamines which are preferably used in amounts from 0,1 to 5 parts per 100 rubber are N,N-di-n-propyl-N1-s-butyl-; N,N-di-n-propyl-N1-(1,3-dimethyl-n-butyl)-; N,N-di-n-propyl-N1-(1-methyl-n-heptyl)-; N,N-di-n-butyl-N1-ethyl-; N,N-di-n-butyl-N1-isopropyl-; N,N-di-n-butyl-N1-s-butyl-; N,N-di-n-butyl-N1-(1-ethyl-n-propyl)-; N,N-di-n-butyl-N1-(1,3-di-methyl-n-butyl)-; N-n-butyl-N-n-amyl-N1-methyl-; N,N-di-n-amyl-N1-cyclo-n-butyl-; and N,N-di-n-amyl-N1-s-butyl-p-phenylenediamines.  The usual vulcanizing and compounding ingredients may be present and the mixture may be vulcanized.
Patent GB-771531-A (GB)
Title: Improvements in or relating to the detection and estimation of sulphur dioxide in a gaseous mixture
Inventor: CHERRIER CLAUDE-MICHEL
IPC: G01N21/33
Filed: 1952-03-20
Abstract: 771,531. Radiation gas analyses. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST.-GOBAIN, CHAUNY, & CIREY. March 20, 1952, No. 7271/52. Class 40 (3). The amount of sulphur dioxide present in a mixture of gases is estimated by determining the ultra-violet absorption of the mixture. As shown, a sample of the mixture passing through a tube 3 is diverted through a tube 1, the ends of which are closed by quartz plates 2, 2a. At one end of the tube is a mercury vapour lamp 4 and at the other a photo-cell 5 responding to ultra-violet emerging from the tube. A filter 6 which may consist of a deposit of silver or quartz passing wavelengths in the range 3050 to 3200 A or of a film of potassium or quartz passing wavelengths in the range 2650 to 2850 Š is situated between the ends of the tube and the photo-cell. A liquid filter comprising a suspension of quartz in cyclohexane and decahydronaphthalene may be used. Source intensity is monitored by a similar cell 7 receiving light from the same source through a tube 9, filter 8 and adjustable diaphragm 11. The outputs of the two cells are applied in opposition at the grids of a valve amplifier 10 which is coupled to a power stage consisting of two cathode follower valves 12 across the cathodes of which is connected a voltmeter 13. The circuit may be initially balanced by a potentiometer 14 or the adjustable diaphragm 11.
Patent GB-433931-A (GB)
Title: Improvements in and connected with spring wheels
IPC: B60B9/06
Filed: 1935-03-08
Abstract: 433,931. Vehicle wheels. CROOK, W., 89, Brougham Street, Burnley. March 8, 1935, No. 7300. [Class 144 (i)] A spring wheel comprises an outer rim 1 which may be adapted to carry a pneumatic &c. tyre, or for use on rails, the rim having a web 2 guided between a pair of flanged discs 4, 6 forming the wheel-body. The rim is resiliently supported by radial springs 12 fitted between arms 8 on the disc 4 and studs 13 on the rim, sets of radial and nearly-radial springs 14, 21 respectively, and circumferential springs 24, the springs 14, 21, 24 being fitted between the arms 8 and projections 19 on the rim. The compression of the springs 14 (and, if desired, the springs 12) may be adjusted by nuts 20 on radial bolts 18.
Patent GB-470195-A (GB)
Title: Improvements in and relating to autographic registers
IPC: B41L5/04
Filed: 1936-03-11
Abstract: 470,195. Memorandum appliances. LAMSON PARAGON SUPPLY CO., Ltd. March 11, 1936, No. 7328. Convention date, March 11, 1935. [Class 16] [Also in Group XIX] An autographic recorder of the hand pull-out type having feed-initiating mechanism is provided with a spring-pressed record-holding drawer held closed by a latch and freed upon operation of the feed-initiating mechanism. The folded forms are drawn by hand from a stack 17, Fig. 4, pass over a platen 29, and are severed by tearing at an edge 36. The initial feed of the strips is effected by a known device, such as that described in U.S.A. Specification 1,982,606, including a pair of studs 26 spring-pressed upwardly through holes in the strips. Upon the rocking of a shaft 33 by an external handle 34, Fig. 1, the studs are moved to the right to feed the strips and then retracted to permit feed to be completed by hand. The severed record vouchers are stored in a drawer 54. normally retained in the casing by a latch 71, Fig. 2, against the action of a spring 67. Upon the rocking of the operating handle, the latch is disabled by a roller 73 carried by an arm 72 of the shaft 33. Alternatively, the drawer may be freed by rocking a lever 74 connected to the latch and accessible through a hole 77 in the casing. The drawer is arrested at the limit of its outward movement by the abutment of a bracket 65 thereon with the downturned end 66 of a rod 63. A spring 68 on the left-hand end of the rod serves as a buffer. The vouchers are aligned within the drawer by a stud 55 extending upwardly through a hole in each voucher. The upper part of the casing is provided with a writing aperture 15 and is pivoted at 13 to the lower part. To give access to the supply compartment, the platen 29 is also pivoted to the lower part of the casing for rotation about an axis 39. A roll of carbon strip is contained within a compartment carried by the platen and held in position by a spring-pressed plate. The free end of the strip passes across the platen and is secured at the opposite side by a clamping bar.
Patent GB-249318-A (GB)
Title: Improvements relating to thermo-electric cells
IPC: H01L35/34
Filed: 1925-03-19
Abstract: 249,318. Metropolitan-Vickers Electrical Co., Ltd., (Westinghouse Electric & Manufacturing Co.). March 19, 1925. Thermo electric batteries.-In thermo-electric cells of the kind comprising metal strips mounted on an insulating base and making contact at a number of points, the strips are formed by spraying the metal on to the base. This may be done by first covering the base 1 with a sheet of material having openings corresponding to the strips 3 and spraying one of the metals through the openings and then removing the sheet and substituting a second sheet corresponding to the strips 4 and repeating the spraying process. A number of the completed elements may be assembled on edge in a container having a resistance element in the bottom, the upper edges of the plates being exposed to the atmosphere. Another method of making the complete thermo-element consists in winding round the base a spiral of protective material leaving narrow spaces between the convolutions. Two different metals are then sprayed on the opposite sides of the base, the metals overlapping at the edges. The protective material is then removed. Another method consists in forming the base with a spiral groove and spraying two different metals over the whole of each face of the base. Both faces are then ground down to remove the metal outside the grooves. The base may be of asbestos and may be covered with an oily substance on those portions to which the sprayed metal is not required to adhere.
Patent GB-547058-A (GB)
Title: Improvements in or relating to self-propelled vehicles for use in warfare
IPC: F42B23/00
Filed: 1941-02-07
Abstract: 547,058. Land torpedoes. WATSON, A. J. G. Feb. 7, 1941, No. 7513/42. Drawings to Specification. Divided out of 547,042. [Classes 9 (ii), 92 (i) and 92 (ii)] Relates to pilotless, self-propelled, motor vehicles travelling on land and carrying a bursting explosive charge fired automatically during travel of the vehicle or by impact at the end of the travel. According to the invention, the charge is fired after a time determined by the distance travelled by the vehicle if it has not been previously exploded by impact. The invention is shown applied to a vehicle having all the features of that disclosed in Specification 547,042.
Patent GB-229128-A (GB)
Title: Improvements relating to gas holders
IPC: F17B1/00
Filed: 1924-03-25
Abstract: 229,128. Blakeley, W. March 25, 1924. Drawings to Specification. No Patent granted (Sealing fee not paid). Holders.-A gas-holder having column-guided lifts is provided with a spirally-guided top or " flying " lift or lifts. The spiral rails on the top lift engage flanged wheels supported by bearings mounted in the usual manner on the dip channel of the next lift.
Patent GB-883982-A (GB)
Title: Thionophosphonic acid fluoramides
IPC: C07F9/572
Filed: 1960-03-03
Abstract: The invention comprises thionophosphoric acid fluoroamides of formula <FORM:0883982/IV (b)/1> where R and R1 are C1-6 aliphatic hydrocarbyl or cycloaliphatic hydrocarbyl and R2 is hydrogen or C1-6 aliphatic hydrocarbyl, or R1 and R2 together with the nitrogen may form a heterocyclic ring which may contain further hetero atoms.  They are prepared by reacting a thionophosphonic acid difluoride <FORM:0883982/IV (b)/2> with an amine R1R2NH in the presence of an acid binding agent which may be excess amine reactant.  The products are insecticides.  Methylthionophosphonic acid difluoride required as a starting material is prepared by adding methylthionophosphonic acid dichloride rapidly to a mixture of antiminous fluoride and sodium fluoride or by the dropwise addition of a chlorobenzene solution of the dichloride to a chlorobenzene/sodium fluoride mixture while heating.  Other phosphonic acid difluorides are said to be prepared similarly.ALSO:Insecticidal compositions contain as active ingredient a thionophosphoric acid fluoroamide of formula <FORM:0883982/VI/1> where R and R1 are C1-6 aliphatic hydrocarbyl or cycloaliphatic hydrocarbyl and R2 is hydrogen or C1-6 aliphatic hydrocarbyl, or R1 and R2 together with the nitrogen may form a heterocyclic ring which may contain further hetero atoms, in admixture with a solid or liquid carrier.
Patent GB-859875-A (GB)
Title: Improvements in or relating to electric switches
Inventor: HALL HUBERT ALLEN
IPC: H01H5/16
Filed: 1956-03-12
Abstract: 859,875. Snap-action switches. SOUTH WALES SWITCHGEAR Ltd., and HALL, H. A. May 3, 1957 [March 12, 1956], No. 7707/56. Class 38 (5). The moving contacts of a heavy-current switch are moved with a snap-action by the parts shown in the exploded view. A spring- loaded bolt 34 is mounted on a locking-link 26 carrying the switch contacts and engages in one or other, of the recesses 14, 15 in a fixed lockplate 13. If the bolt 34 is engaged in the recess 14 and the crank member 6 is turned in a clockwise direction by a removable handle 11, the transmission spring 23 is strained between a boss 30 on the link 26 and a peg 18 on a cam-plate 16, which is secured to and turned with the crankmember 6, until the tip 35 cams the bolt out of the recess and allows the spring 23 to turn the link 26 until the bolt enters the recess 15. On reverse rotation of the crank member 6, the bolt 34 is cammed from the recess 15 by the tip 36 of the cam-plate. Instead of being as shown, the recesses 14, 15 may be provided in the locking link and the bolt 34 mounted in a housing on the rear of the front plate 1 of the switch. Positive actuation of the switch is provided by shoulders 37, 38, on the cam-plate which engage with bolt housing 31.
Patent GB-903163-A (GB)
Title: Improvements in or relating to electrostatic precipitators
IPC: B03C3/76
Filed: 1961-03-06
Abstract: 903,163. Photo-electric control of electrostatic precipitators. RESEARCH-COTTRELL Inc. March 6, 1961 [March 15, 1960], No. 8040/61. Class 40 (3). [Also in Group XL (a)] In an electrostatic precipitator, the dust density at the dirty gas inlet 12 is sensed by a photo-electric cell 48, and the signal therefrom is used to control the intensity or frequency of operation of electromagnetically-operated rappers 24, 26 associated one with each of a pair of electrode assemblies 16, 18. As shown, the photo-electric cell signal is fed into a differential amplifier 50 which is fed also with a reference signal from a source 54, and the amplifier output controls a reversible motor 58 which adjusts the movable contact 40 of an auto-transformer feeding the power unit 28 which energizes the rappers 24, 26. In an alternative arrangement, a further photo-electric cell may be sited at the gas outlet 14 and the signals from the two cells integrated before being fed to the differential amplifier. In further arrangements, the auto-transformer may be located in a rapping timing circuit so that the rapping cycle may be controlled.