baber/WOPTO huggingface dataset:
Patent GB-209793-A (GB)
Title: Improvements in or relating to devices for gauging or testing dimensions
IPC: G01B5/20
Filed: 1922-09-22
Abstract: 209,793. Wickman, A. C. Sept. 22, 1922. Surface and ontline gauges; measures of length.-In the manufacture or correction of articles having a closed series of divisions intended to be equal in dimension such as gear wheels, dividing-heads, and circular scales or dials, the beginning of a division is zeroized and its termination noted; the beginning of the next division is zeroized to the same zero and the degree of variation, if any, of the dimension of that division as compared with the first ascertained ; this process is continued throughout the series and the results plotted as shown on Fig. 2. On this Figure, I represents the dimension of the first division and 2 - - 15 the dimensions of the following divisions. As the series of divisions is closed the sum of the errors above the zero line equaLs the sum of the errors below and so the zero line y is determined. A true error curve, Fig. 3, is then plotted from the rate of change of error diagram Fig. 2. In determining the rate of change of error curve for a toothed wheel the wheel is mounted on a mandrel that can be turned by a device such as a worm and worm wheel and one of the teeth brought into engagement with a stylus a, mounted as described in Specifications 172,689 and 172,690 on a resilient plate c that is associated with movement multiplying levers c<1> actuating an indicating needle c<2>. The needle c<2> is brought to its zero and the dimension of the toothed division read by a needle c' actuated by multiplying levers connected to a second stylus b engaging in the next recess in the. wheel. The divisions may be measured by microscopes.
Patent GB-872554-A (GB)
Title: A new or improved mixing valve
IPC: G05D23/13
Filed: 1958-08-12
Abstract: 872,554. Valves. TACCHI, P. G. Aug. 7, 1959 [Aug. 12, 1958], No. 25813/58. Class 135. A hot and cold fluid mixing valve comprises pressure responsive means, e.g. disc 29 connected to open a valve 17 against a spring 25 to control the inlet of hot fluid from 15 to the mixing chamber 10, 11 leading to the outlet and responsive to the inlet pressure of cold water at 21, and a thermal element in the mixing chamber, e.g. bimetal coil 31 connected to the valve 17 to vary the inlet of hot fluid in response to variation of mixture temperature to maintain that temperature constant. Disc 29 is threaded at 27 on the valve stem 18 and is connected at its centre 28 to the inner end of the bimetal, the outer end being secured at 32 to the casing. Inflow of cold water lifts disc 29 to open valve 17 and, on variation of the mixture temperature from the value set by turning spindle knob 20, the bimetal rotates disc 29 and through thread 27 axially adjusts the valve with respect to the disc. The outflow of mixed fluid is controlled by a cold fluid inlet valve or a valve in the mixture discharge pipe 33. The valve is initially set by adjusting the loading of spring 25 by inserting a tool through holes 24 in the setting knob and turning spring abutment nut 22 by apertured lugs 23.
Patent GB-1524789-A (GB)
Title: Delay blasting assembly
IPC: F42D1/06
Filed: 1977-06-21
Abstract: 1524789 Delay blasting assembly CANADIAN INDUSTRIES Ltd 21 June 1977 [2 July 1976] 25837/77 Heading F3A A non-electric delay blasting assembly for use with a low energy detonating or shock wave cord comprises a metallic shell 1 containing an explosive composition 2, a delay train 4-7 and a resilient closure plug 8 having a channel therethrough divided into two compartments 10, 11 by means of a diaphragm 12, the outer compartment 10 being adapted to receive the end of the low energy cord. The explosive charge 1 is provided with a primer 3 and the delay train includes a delay composition 5 and a burning composition 7. The compartment 10 has a lip 13 for gripping a mini-detonator on the end of a shock wave cord or a sealing member on the end of a detonating cord.
Patent GB-1474266-A (GB)
Title: Block constructions
IPC: E04G21/18
Filed: 1974-06-11
Abstract: 1474266 Building block-spacer R E B THOMAS 11 June 1974 [19 June 1973] 25904/74 Heading EIB A spacer for use in erecting a wall of similar rectilinear blocks 2 comprises a pair of parallel strips 1 interconnected by ties 5, the strips having a pair of resilient flanges 15 for engaging opposed faces of the blocks 2 between which they are located. The strips may have flanges 4 overlying the edges of adjacent blocks. They may be L-shaped, Figs. 6 and 8 (not shown) to cover vertical and horizontal edges of the blocks. The strips may be joined to the ties by snap action fasteners, Fig. 4, permitting them to be removed after mortar which is poured into apertures in the blocks has set.
Patent GB-916489-A (GB)
Title: Root-resistant and root-repellent packing and sealing compounds for underground water pipes
IPC: F16J15/20
Filed: 1959-07-28
Abstract: Root resistant or repellent packing or sealing compounds comprise bitumen and one or more herbicides of low volatility soluble in bitumen but insoluble in water selected from esterification products of polychlorophenols with higher carbocylic acids or organic or inorganic polybasic acids; compounds of polyvalent metals with polychlorophenols and higher carboxylic acids; 2,4 dichlorophenoxy acetic acid, 2, 4, 5, trichlorophenoxy acetic acid and a -naphthyl acetic acid, or their salts, amisde or esters; phenyl N-isopropyl carbamic acid ester, or p-chlorophenyl dimethyl urea.
Patent GB-601844-A (GB)
Title: Improvements in or relating to electric circuit breakers and trip devices therefor
IPC: H01H71/10
Filed: 1944-01-06
Abstract: 601,844. Automatic circuit breakers. SHEPHERD, G. R. (Westinghouse Electric International Co.). Jan. 6, 1944, No. 25972/45. Divided out of 574,116. Drawings to Specification. [Class 38 (v)] A circuit-breaker is described which is identical with that of Specification 574,116, but the claims cover circuit-breakers comprising independent bimetallic and electromagnetic tripping elements, which upon overload, operate a trip-bar, the former by'releasing a biassed trip member, to release a further member and trip the circuit-breaker.
Patent GB-584301-A (GB)
Title: Saw band
IPC: B23D61/12
Filed: 1944-12-28
Abstract: 584,301. Saws. CONTOUR SAWS, Inc. Dec. 28, 1944, No. 25990. Convention date, Jan. 17. [Class 145 (ii)] A flexible saw for a band-saw machine has hardened teeth integral with and spaced equal distances along one edge of the band with the teeth spaced apart at least twice, and preferably four times, their height, and with a toothless portion 6a of the band lying between adjacent teeth at least as great as the length of the teeth. The teeth are hardened down to their roots, and the rest of the band, including the portions 6a, is unhardened to ensure greater flexibility. The back 8 is inclined at an angle of approximately 55 degrees to the edge of the band.
Patent GB-286636-A (GB)
Title: Improvements in sleeve valve internal combustion engines
IPC: F01L5/10
Filed: 1927-10-03
Abstract: 286,636. British Continental Motors, Ltd., (Assignees of Niven, A. M.). March 7, 1927, [Convention date]. Cylinders, ports of. - In sleeve-valve engines, a sealing-ring, for example that shown at 18 on the cylinder head, is arranged with its edge overlapping the cylinder ports 10, 11, so as to define the moments of inlet-closing and exhaustopening. Adjacent cylinder exhaust and inlet ports 26, 27, and corresponding sleeve ports 24, 25, are shown in Fig. 5.
Patent GB-649494-A (GB)
Title: Improvements in suction actuated governors for internal combustion engines
IPC: F02D9/00
Filed: 1948-10-05
Abstract: 649,494. Speed governors. SOC. D'ETUDES DE CARBURATION POUR L'AUTOMOBILE ET L'AVIATION S.E.C.A.A. Oct. 5, 1948, No. 26002. Convention date, Oct. 16, 1947. [Class 57] A suction actuated governor for internal combustion engines has an unbalanced throttle valve 5 in the induction passage 4, the valve being urged in an opening direction by a spring 15 which is connected thereto through a connecting lever 12 which bears against a roller 22 supported from the governor casing. The throttle valve 5 is secured to a spindle 6 which carries a throttle lever 11 pivoted to the connecting lever. The tension of the spring may be adjusted by a nut 20, and the collar 22 is rotatably supported by a lever 24 pivoted at 25 to the casing. The position of the collar may be varied by a nut 30. When the throttle valve moves towards its closed position, the point of contact of the collar 22 on the lever 12, passing the fulcrum thereof, is varied and with it the effect of the spring on the throttle valve. A manual central lever 35, Fig. 1, disposed outside the governor casing is secured to a stub shaft 34 which projects inside the casing and carries at its inner end a finger 36 which co-acts with the lever 11 to limit the extent of opening of the throttle valve.
Patent GB-1098368-A (GB)
Title: Steel
IPC: C22C38/40
Filed: 1966-06-10
Abstract: A steel which is martensitic, even after being welded, comprises:- .Ni.3-6.5%.Ni + Cr \sO 21.5%2 .Cr.12-16.5%. .Mo.0-1.5%.Cr+Mo \sO 16.5% .C.up to 0.12%.C + N \sO 0.13% .N.up to 0.1%. .Si.0-1%. .Mn.0-1%. .Al.0-0.15%. the balance, apart from impurities (S, P, H, O) and residual small amounts of cleansing and deoxidizing elements, being iron. The alloy must contain not more than 5% each of austenite and delta ferrite.  The steel may be homogenized at 1150 DEG C.-1260 DEG C. hot worked at 1205 DEG C.-815 DEG C., optionally cold worked and/or refrigerated and normalized at 790 DEG -870 DEG C.
Patent GB-284003-A (GB)
Title: Improvements in collapsible suit-cases and the like
IPC: A45C7/00
Filed: 1926-10-19
Abstract: 284,003. Prendergast, A. F. C. V. Oct. 19, 1926. Securing members in a given relative position.- The hinge joint of the toggle members of a collapsable suit-case, hat-box, or the like comprises a tongue 7 projecting from the upper toggle member 5 and pivoted between the end of a ferrule which partly encircles the lower member 6. A slot 9 is formed in the member 6 to accommodate the tongue when the joint is in the open position, and a sleeve 11 slidable on the member 5 is provided with a notched slot 12 adapted to take over the tongue 7 and lugs 8 to lock the joint. The joint is shown collapsed in Fig. 3.
Patent GB-455456-A (GB)
Title: Process and apparatus for the purification of cream
IPC: A23C7/04
Filed: 1935-09-20
Abstract: 455,456. Pasteurizing and deodorizing cream. ANDERSSON, A., M÷rbylanga, Sweden. Sept. 20, 1935, No. 26095. [Class 49] In pasteurizing and deodorizing cream by heating under reduced pressure in a vacuum vessel 15 in which it is subsequently cooled, the raw cream first flows from the separator over a heating coil 8 which heats it to about 80‹ C. to drive off ethereal oils prior to the pasteurization which is effected at 70-75‹ C. In the example given, the raw cream flows from a conduit 1 through a spray-nozzle 10 over the coil 8 through which hot water is circulated by a pump 5. Screens 2a, 2b shut off light from the coils. The cream is collected by a vessel 12 from which it is drawn by suction through a regulating valve 13 and a pipe 14 to the vacuum vessel 15 which is connected by a pipe 17 to a vacuum pump 18. The lower portion of vessel 15 is surrounded by a jacket 22 which has supply pipes 24, 25 and discharge pipes 28, 29 for steam and water respectively. The heating is effected by circulating steam through the jacket, and the subsequent cooling by water supplied through pipe 25 and kept cool by a coil 27 through which cooling water is circulated. The cream is discharged from vessel 15 directly into the churn through an outlet 30 having a cock 31. The vessel has a vacuum gauge 19 a safety valve 20, a thermometer 21, a door 32 and an observation window 33. The cream may be acidulated after cooling and prior to discharge by adding acid to vessel 12 and drawing it into vessel 15.
Patent GB-298469-A (GB)
Title: Improvements in brakes for trailers
IPC: B60T7/20
Filed: 1928-09-11
Abstract: 298,469. Soc. Anon. A. Saurer. Oct. 8, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Applied by backward pressure of tractor or relaxation of pull.-In a tractor brake operated by the overrunning of the tractor by the trailer the actuating member for the brakes is provided on the tractor. The radius bar 4 of the trailer engages in a hook 1 on a bar 7 slidable in a sleeve 6 at the rear of the trailer. The bar 7 is connected by a link 11 to the trailer brakes operating lever 12. Idle movement is provided between a shoulder 9 on the bar 7 and a shock-absorbing spring 8 in the sleeve 6 so that the brakes are first applied and then the shoulder bears on the spring. The load of the trailer is normally transmitted to the tractor through the spring 8 by means of a shoulder 10 on the bar 7. Draw-bars of usual construction provided with shockabsorbers may be modified by extending the sliding path of the draw-bar for the purposes of the invention.
Patent GB-1507186-A (GB)
Title: Limiter circuit
IPC: H03G11/04
Filed: 1975-06-19
Abstract: 1507186 Automatic gain control SONY CORP 19 June 1975 [20 June 1974] 26158/75 Heading H4R In an automatic gain control circuit, particularly for a magnetic recorder, a control signal is derived from the output of the recording amplifier and fed to a variable gain circuit, formed by resistor 4 and transistor 13, via a transistor emitter follower 15. The emitter follower rectifies the signal at the output of the amplifier when it exceeds a predetermined value and provides a low impedance source to charge capacitor 12 to provide a fast attack time, set by variable resistor 16 and capacitor 12, while the decay of the control is set by capacitor 12 and the base emitter resistance of transistor 13. Switch 14 is provided to disable or reset the limiter.
Patent GB-629446-A (GB)
Title: Improvements in or relating to dielectric heating
IPC: B29D30/06
Filed: 1947-10-01
Abstract: 629,446. Dielectric heating. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Oct. 1, 1947, No. 26456. Convention date, Oct. 4, 1946. [Class 39(iii)] A method of heating articles e.g. motor car tyres 13 by microwave energy comprises supporting and rotating the article within a resonant chamber or waveguide 10, so that each part of the article is successively exposed to maximum and minimum points of standing wave energy and is thereby uniformly heated.
Patent GB-665984-A (GB)
Title: Improvements in and relating to the manufacture of photographic reversal images
IPC: G03C8/06
Filed: 1947-10-02
Abstract: 665,984. Photographic processes. GEVAERT PHOTO-PRODUCTEN N.V. Oct. 2, 1947 [Oct. 7, 1946], No. 26570/47. Addition to 654,631. Class 98 (ii). In the process according to the parent Specification, the diffusion of the silver halide and removal of the emulsion layer is performed in a bath containing a gelation-inhibiting agent, e.g. a thiocyanate, an organic sulphonic acid, or ammonium carbonate and a silver halide solvent. Substances restraining diffusion as described in Specification 427,518, chemical toning substances (e.g. selenium compounds), and crystallization-preventing substances containing an ionizable OH-group may also be added to the bath. In example 1, exposed material consisting of a support carrying a hardened receiving layer and an unhardened emulsion layer is developed and then treated in a diffusion bath containing hypo and sodium α-naphthalenesulphonate. The image may be toned in a gold-thiocyanate bath. In example 2, exposed material consisting of a waterproof paper support coated with a hardened receiving layer and an unhardened contrasty emulsion layer is developed in a hydroquinone-KOH developer and is then treated in a diffusion and toning bath containing potassium thiocyanate, hypo, sodium sulphite, and selenium. In example 3, exposed material, according to Specification 654,931, consisting of a support carrying a hardened light-sensitive emulsion containing development nuclei and an unhardened light-sensitive emulsion layer is developed and treated in a bath containing potassium thiocyanate and hypo, The remaining hardened emulsion layer contains a deep-brown positive image separated from the first-formed negative image therein by a small transparent contour line. Specifications 319,077, [Class 98 (ii)], 614,155 and 654,630 also are referred to.
Patent GB-745645-A (GB)
Title: Manufacture of enol acetates from 20-ketosteroids
IPC: C07J5/00
Filed: 1952-10-22
Abstract: The invention comprises 3 : 20-diacetoxy-D 3:5:17(20)-pregnatriene and a process for the preparation of D 17(20)-and D 20(21)-enol acetates of 20-ketosteroids by heating under reflux, in the presence of a sulphonic acid as catalyst, a 20-ketosteroid and a mixture of isopropenyl acetate and a high-boiling solvent, said mixture being in a ratio of between 1 : 0.5 and 1 : 10.  Specified starting materials are 20-ketopregnanes, 20-ketopregnenes, their allo derivatives, 20-ketopregnadienes and 20-ketopregnatrienes.  Using isopropenyl acetate and acetic anhydride, D 17(20)-enol acetates are obtained as main products in the form of mixtures of cis and trans isomers, whilst with other solvents, such as toluene, xylene and anisole, a predominance of D 20(21)-enol acetates may result.  In examples: (1) D 5-pregnen-3b -ol-20-one, isopropenyl acetate and p-toluene sulphonic acid or amidosulphonic acid are refluxed in toluene, xylene or anisole to yield 3b  : 20 - diacetoxy - D 5:20 - pregnadiene; (2) as in (1), using acetic anhydride as solvent, a mixture of isomers of 3 : 20-diacetoxy-D 5:17(20)-pregnadiene results; (3) allopregnan-3b -ol-20-one or its acetate treated as above using anisole or acetic anhydride gives a mixture of isomers of 3b  : 20-diacetoxy-D 17(20)-allopregnene; (4) as in (3) progesterone gives isomers of 3 : 20-diacetoxy - D 3:5:17(20) - pregnatriene; (5) D 5 - pregnen-3b -ol-20-one is benzoylated and product heated with p-toluene sulphonic acid, isopropenyl acetate in acetic anhydride or anisole to give mainly 3b -benzyloxy-20-acetoxy-D 5:17(20) - pregnadiene. Specification 711,388 is referred to.
Patent GB-168529-A (GB)
Title: Improvements in collars for personal wear
IPC: A41B3/10
Filed: 1920-09-17
Abstract: 168,529. Wilson, W. S., and Wilson, J. S., (trading as Wilson Bros.). Sept. 17, 1920. Collars, linen; shirt cuffs; shirt fronts.-These are formed without stitching by cutting or stamping-out blanks of the desired shapes from sheet material comprising two or more plies treated with adhesive and inseparably secured together by rolling, the blanks being subsequently fashioned by hand or machine to the style required.
Patent GB-648569-A (GB)
Title: Improvements in or relating to electrical frequency indicating instruments
IPC: G01R23/02
Filed: 1948-10-13
Abstract: 648,569. Frequency measurements. GENERAL ELECTRIC CO., Ltd., RUDGE, T. R., and TURNER, H. C. Oct. 13, 1948, No. 26662. [Class 37] In a frequency meter having two windings fed over impedances of different frequency characteristics the windings are adjustable in position in order to vary the scale length or circuit balance. Two coils having a common axis 2 are mounted in moulded containers 3 on opposite sides of two coplanar plates 5 projecting from the case of the instrument. The coils co-operate with two ferromagnetic vanes 8 mounted on a single shaft 9. Each coil container is in the form of a hollow rectangular box having an open side 4 and is slid over studs projecting from the plates 5. Springs press the containers 3 against nuts 12 by which their distances from the shaft 9 may be adjusted.
Patent GB-947875-A (GB)
Title: Classifying screen
Inventor: WEHNER ALBERT
IPC: B07B1/12
Filed: 1960-08-02
Abstract: 947,875. Screen classifiers. R. HALSTRICK. Aug. 2, 1960, No. 26667/60. Heading B2H. In a screen classifier, having two relatively moving frames comprising parallel plate separating elements, the elements of one frame being interposed alternately with the elements of the other and the movement of the frame or both frames being such that each plate element thereof moves in a closed circular path lying in a plane parallel to the plate elements, the plates a, Fig. 4, of at least one frame are connected together in pairs for lateral rigidity, each plate or pair being laterally spaced from the other. In addition or alternatively the upper edges of the plates may be thickened as in Fig. 7 (not shown) to increase rigidity or the plates may have studs f, Figs. 5 and 6, laterally projecting between adjacent relatively moving plate surfaces to provide lateral support against buckling. The top edges of the pairs of plates may carry an interchangeable strip of fine mesh or perforated sheet forming a floor for the material to be classified, Fig. 3 (not shown). The top edges of the plates may also have sawtooth serrations and spaced apart transverse strips connected to the aligned short sides of the teeth joining the plates in pairs, Figs. 5 and 6, to move the material to be classified in a direction parallel to the plate length. In Fig. 13 (not shown) alternative forms of serration are illustrated. In an alternative form of classifying, Fig. 11 (not shown), the plates of one or both systems have slits therein to permit lateral passage of particles when the plates of one frame rise above the plates of the other, the particles being carried downward as the plates of the one frame descend. In Fig. 12 (not shown) the plates of only one frame have slits and are connected together in pairs, the plates of the other being individually mounted and having bulbous upper edges the thickness of which conforms to the lateral spacing between adjacent plates of the one frame.
Patent GB-710570-A (GB)
Title: Improvements relating to welded connections for metal work-pieces, more especially steel tubes composed of materials having different coefficients of expansion
IPC: F22G3/00
Filed: 1951-11-15
Abstract: 710,570. Tube joints. WESTDEUTSCHE MANNESMANNROHREN AKT.-GES. Nov. 15, 1951 [Nov. 16, 1950], No. 26827/51. Class 99 (1). [Also in Group XXII] Two metal members e.g. steel tubes having different coefficients of thermal expansion are connected by means of an intermediate element consisting of two brazed or welded overlapped tubes, each overlapped tube being welded to a member and having the same coefficient of expansion as the member. In an embodiment a steel tube a, Fig. 1, having the larger coefficient is welded to a tube c forming the inner part of the intermediate element a tube d being telescoped over and welded to the tube c and also welded to the steel tube b of the smaller coefficient of expansion. An intermediate element may be produced from a double walled brazed or welded tube the ends of which are upset to the form shown in Fig. 3 and then machined to the dotted lines to form a uniform thickness tube.