baber/WOPTO huggingface dataset:
Patent GB-669878-A (GB)
Title: Improvements in and relating to gaseous pressure motors
IPC: F01B3/00
Filed: 1949-11-25
Abstract: 669,878. Gaseous-pressure engines. ANDERSON, W. H. Nov. 15, 1950. [Nov. 25, 1949] No. 30240/49. Classes 122(ii) and 122 (iii). A revolving cylinder gaseous pressure engine comprises a hollow shaft 11 rotatably mounted in bearings 12 in a casing 10 and carrying a cylinder block 15 provided with a ring of axial cylinders 16 housing pistons 21 which bear at their outer ends on a swash-plate mounted in the casing 10. the working medium being supplied through an axial inlet pipe 18 and exhausted through the hollow shaft 11. The ends 22 of the pistons are tapered and bear on a ring 24 mounted on ball bearings 25 housed in a plate 26 mounted on a swashplate 23. The inlet pipe 18 extends into the bore of the hollow shaft and at the position 19 where it is a running fit therein is provided with a radial port 20 to register with radial passages 17 to supply pressure to one or more cylinders 16 and is non- circular to permit exhaust from some of the other cylinders through passages 17 and the shaft 11.
Patent GB-633472-A (GB)
Title: Improvements in or relating to tipping wagons
IPC: B61D9/08
Filed: 1947-11-14
Abstract: 633,472. Railway tip wagons. ALLEN & SONS (TIPTON), Ltd., W. G., and TOLHURST, W. T. Nov. 14, 1947, No. 30252. [Class 103 (iv)] In a tip wagon of the type in which the body end walls are provided with rockers to co-operate with supporting standards attached to each end of the chassis, each standard being provided with a manually operable catch adapted normally to retain the body in an upright position but, when released, to permit rocking of the body to discharge its contents, each standard consists of a pair of main channel section uprights rigidly coupled below their upper ends by a transverse rocker-supporting member above which one of the uprights is extended to provide an anchorage for the catch. The channel section uprights 5 are rigidly secured at their lower ends to the chassis 1 and are connected by a transverse member 7 supporting angle section body rockers 3, one of the members 5 being extended at 15 to provide a support for a manuallyoperable catch 16, of which the nose 18 cooperates with the adjoining end 19 of one leg of the rocker 3 to hold the body 2 in its loading condition. Each standard is braced by longitudinally inclined angle struts 14 rigidly secured to the supports 7 and the chassis end members. Plates 9 are welded to the tips of the channels 5 at their lower ends to provide a bolting face for attachment to the chassis members and the upper extension 15 is reinforced by a plate 20 welded to the tips thereof.
Patent GB-1292697-A (GB)
Title: Valve leak detector
IPC: F23N5/24
Filed: 1970-06-23
Abstract: 1292697 Valves ITT INDUSTRIES Inc 23 June 1970 [27 June 1969] 30331/70 Heading F2V In a flow-controlling and leakage detecting apparatus 10, 40, the flow-controlling valve 10 includes a seating ring 16 which is located between the inlet 14 and the outlet 15, is anchored to the valve housing part 13 by screws 22 acting through seat ring legs 20, and is formed with two upstanding concentric seat-forming rings 24, 25, the two rings having the same or fractionally different axial extents, and being engageable by a backed resilient closure member 23. When seated, the closure member and seat rings define therebetween a cavity 38 from which leakage past ring 24 is conveyed by way of channel 41 and pipe 43 to the detector 40. Gas so supplied to the detector acts upon the top side of a diaphragm 39 with a small portion of the supplied gas being allowed to escape to the outlet 15 via a restriction 45 and passage 44. When moved downwardly, the diaphragm 39 acts, through the intermediary of a lever arrangement 50, 52, 53, upon an actuator 56 of a switch 57, such actuation serving to open the switch and to operate a " cold check " circuit connected in series therewith. The circuit includes a switch 60 which closes only when the valve 10 is near or in its fully closed condition. In modifications (Figs. 2-6, not shown), the valve may have a hinged or sluice-type closure member. Furthermore, the detector may have two interconnected diaphragms with the leakage gas being supplied to the space between the diaphragms.
Patent GB-167425-A (GB)
Title: Improvements in and relating to pen holders
IPC: B43K3/00
Filed: 1920-10-27
Abstract: 167,425. Gratze, E. V. Hayes-. Oct. 27, 1920. Penholders.-A penholder has the stick x attached to or formed integral with a coned portion a fitting into a correspondingly - coned end c of a sleeve c' and relatively movable thereto to enable a nib y to be nipped between the parts, which are adapted to be held in contact by a spring d or by screw-threaded portions. In the construction shown in Fig. 3, the coned end of the sleeve forces the coned position a, which consists of a number of spring fingers, to grip the nib against the end b of the stick. In modifications the cone is formed separate and is held in place by bending over the edges of the sleeve; the cone may be corrugated; or the stick is formed with a shoulder to limit the insertion of the nib and to ensure its ejection when the parts are moved. To facilitate assembly, the coned portion a may be made detachable from the stick, or the sleeve c is not pressed to shape until the parts are in position.
Patent GB-652215-A (GB)
Title: Thermo-pump heating systems
IPC: F24H4/02
Filed: 1947-10-07
Abstract: 652,215. Heat pumps; ice-making. EVANS, J. H. Oct. 7,1947, No. 30403/49. Divided out of 652,162. [Class 29] [Also in Group X] in neat pumps deriving the low-temperature heat from the continuous freezing of water the ice is formed in tapered tubes 20 surrounded by evaporating refrigerant and due to the pressure within the tubes is continuously extruded upwards and is collected at 26 and allowed to melt, the melt water being recirculated to the evaporator 14. Hot compressed refrigerant from the compressor 1 driven by an internal combustion engine 2 passes by a pipe 4 to a condenser 5 situated in the ventilating duct 41 of a building so as to warm the entering air. Condensed refrigerant is collected in a vessel 9 and supplied through pipe 10 and pre-cooler 11 to a chamber 12 through a float valve 13, and is fed through a pipe 16 to the ice-making evaporator 14. Refrigerant vapour mixed with liquid leaves the evaporator through a pipe 17 which branches at 18 within the chamber 12 to return the liquid refrigerant to the lower part of the chamber without breaking the syphonic circulation, and the vaporized refrigerant to the upper part of the chamber whence it returns to the compressor through the precooler 11 and pipe 3. The ice is formed in the tapering tubes 20 the lower orifices of which are fed with water from an insulated tank 22 the level in which is controlled by a float so that the tubes 20 are completely filled. Surrounding the lower orifices of the tubes 20 is a shallow jacket 21 through which circulates brine cooling medium for the compressor cylinder 1. Due to the taper of the tubes 20 the ice formed is extruded upwards and the columns reaching an inclined canopy 24 will be broken off and force other rising columns of ice towards a shoot 25 down which the ice falls to the pile 26 where it melts the water passing to an underground tank 29. A pump 30 returns this water to the tank 22. The cooling jacket of the engine 2 is connected by pipes 33, 35 to an air heater 34 in the duct 41, and the exhaust gases pass by a pipe 36 to an air heater 37 in the duct and thence to a jacket 39 surrounding the ventilation air inlet pipe 6, escaping at 40. A fan 8 draws air through the pipe 6 and supplies it to the building through the duct 41 and outlets 42. Vitiated air is extracted at 43 and recirculated or discharged at 26 to aid the melting of the ice. The building can be heated by water circulation instead of by air. Specification 652,162 is referred to.
Patent GB-1318476-A (GB)
Title: Photographic cameras
IPC: G03B15/04
Filed: 1971-06-29
Abstract: 1318476 Photographic cameras POLAROID CORP 29 June 1971 [29 June 1970] 30437/71 Heading G2A A camera having a mounting platform 26 for a flash source, e.g. a flash cube 28, is also provided with a positive lens, as shown an echelon or Fresnel lens 38, in front of the mounting, which lens receives light from an inserted source and re-directs this light towards a subject 16 with a reduced angular spread. The lens to mounting distance is preferably less than the focal length of the lens 38.
Patent GB-848170-A (GB)
Title: Improvements in electric heating units and methods of making the same
IPC: H05B3/40
Filed: 1958-09-24
Abstract: 848,170. Electric heating resistors. GENERAL ELECTRIC CO. Sept. 24, 1958 [Oct. 18, 1957], No. 30497/58. Class 39(3). [Also in Group XXXVI] As a step in the manufacture of an electric heating unit bifilarly wound resistance conductors 12 and 13 are arranged within a metal sheath 11 and are commonly connected at one end of the sheath to an element 30 and at the other end to the legs 21 and 22 of a U-shaped element 20 (see Group XXXVI), the lower turns of the conductors being held in correct spaced-apart relationship by a cylindrical threaded refractory bushing 35 formed with a tongue which is inserted between the extreme outer ends of the legs 21 and 22. The sheath 11 is filled with finely divided magnesia and then rolled to reduce the crosssectional area and compact the magnesia into a dense mass 14; during this process the bushing 35 is crushed and forms part of the dense mass. The upper and lower ends of the sheath 11 are then cut off and plugs 18 and 19 are cast into the opposite ends of the sheath to seal it. The bight portion 23<SP>1</SP> of the element 20 is cut off and two distinct terminals 15 and 16 are thereby formed ; the upper end of the element 30 is cut off to produce a terminal 17. The heating unit thus formed may be used for the manufacture of heating elements for electric appliances, e.g. a cooking range.
Patent GB-944490-A (GB)
Title: Improved colour couplers for use in colour photography
IPC: G03C7/36
Filed: 1961-08-24
Abstract: The invention comprises compounds of the general formula: <FORM:0944490/C2/1> wherein R represents a primary alkyl group having from 1 to 18 carbon atoms, a secondary alkyl group having from 3 to 32 carbon atoms, a tertiary alkyl group having from 4 to 32 carbon atoms, a cyclic alkyl, bicyclic alkyl or an aryl group which may be substituted with alkyl, alkoxy or alkoxyalkyl groups containing not more than 18 carbon atoms, a cyclic alkyl group substituted with an aryl group or a halogen substituted phenyl group, R1 represents a primary alkyl group having from 1 to 18 carbon atoms, an alkoxy group having from 1 to 18 carbon atoms or an aryl group which may be substituted with an alkoxy group containing not more than 18 carbon atoms or a halogen atom, an alkamido, carbamyl or sulphamyl group and n is 0 or 1. These compounds are prepared by forming an alkali metal enolate of a compound having the general formula: <FORM:0944490/C2/2> wherein R and R1 represent the same groups and n has the same value as the compound of formula I above, in a solvent in which the compound of formula I is insoluble at -20 DEG C. but in which the enolate is soluble at -20 DEG C., cooling the solution of the enolate to at least -20 DEG C. and adding a slight molecular excess of perchloryl flouride to the solution while the temperature is held between -20 DEG C. and -45 DEG C. An exhaustive list is given in the Specification of radicals which may constitute the groups R and R1. In examples the following compounds are prepared: a - ¦ 3-[a -(2, 4-di-tert-amyl-phenoxy) butyramido] benzoyl} -a -Fluoro-2-methoxy acetanilide, a -benzoyl-a -fluoroacetanilide, a -benzoyl-a -fluoro-2-methoxy acetanilide, ethyl-a -benzoyl-a -fluoroacetate, a -fluoro-a -pivalyl-5-[g  - (2, 4-di-tert-amylphenoxy) butyramido]-2-chloroacetanilide, a -benzoyl-a -fluoro-4-{[N-(p-tolyl)-N-(g -phenyl)-propyl] - sulphamyl} acetanilide and a -fluoro-a -(o-methoxybenzoyl) -4-[a -(2, 4-di-tert-amylphenoxy)-n-butyramido] acetanilide. Specifications 524,154, 524,554, 524,555, 531,246, 531,313, 541,589, 595,314 and 942,865 are referred to.
Patent GB-1300689-A (GB)
Title: Improvements in or relating to electron beam devices
Inventor: RAWLS JOHN LORILLARD JR
IPC: H01J23/027
Filed: 1971-06-30
Abstract: 1300689 Velocity-modulated tubes SPERRY RAND CORP 30 June 1971 [15 July 1970] 30637/71 Heading H1D The collector of a linear electron beam high frequency tube has inner and outer axially extending surfaces and is supported within the tube envelope by a flexible support attached to the envelope and to the outer surface of the collector, in heat-exchanging relationship therebetween, whereby to relieve thermally induced stress during operation of the tube. As shown, the collector 22a, 22b, 22c, 22d is supported from the envelope wall 24 by an inner and an outer set of flexible copper fins 33, 33a, 33b, 33c and 33d and 42 to 42f, respectively, which are insulated from one another by alumina ceramic or beryllium oxide spacers 46 to 46k, and have their inner and outer edges respectively, bent into a cone-like form adjacent their junction with the collector and the wall 24, to facilitate the taking up of radial expansion by axial movement. As shown, the collector is contoured to produce uniform dissipation of heat over its inner surface, and is divided into three mutually insulated portions to which different potentials may be applied via leads 124, 125 and 14. To facilitate evacuation of the collector region, including the end space defined by the nickel/iron/ chromium end cap 25, the outer fins are provided with apertures in their bent portions, and either the inner fins are also so provided or, as shown, a key slot 41 is formed in the collector outer surface. The envelope is mounted on a heat sink (not shown).
Patent GB-909421-A (GB)
Title: Ultrasonic process and apparatus for cleaning film
IPC: G03D15/00
Filed: 1959-09-08
Abstract: 909,421. Cleaning film ultrasonically. LIPSNER-SMITH CORPORATION. Sept. 8, 1959 [Sept. 8, 1958], No. 30703/59. Class 98 (2). Photographic film is cleaned by passing it through a solvent which is ultrasonically energized, the solvent afterwards being non- evaporatively dried off the film. In Fig. 1, the film strip 22 is unrolled from supply reel 20 and passes into a tank 30 containing a cleaning solvent, a number of suitable liquids being specified. The tank is equipped with ultrasonic generators 32, so tuned as to produce standing waves. After leaving the tank the film passes between spray nozzles 36 which rinse the film with clean solvent, and then through a drier 40 described in more detail in Specification 909,422. The dried film passes over drive sprocket 44 on to a take-up reel 50, via a tensioning arm 48 which also acts as a cut-off switch. In a modified arrangement (Fig. 2, not shown), after passing between the spray nozzles 36, the film passes between air squeegees to remove excess liquid. In a further modification (Fig. 3, not shown), the excess liquid falls into a collecting tank and is used again. The air and spray squeegees are so designed as to remove the greater part of the cleaning liquid carried on the film, but to leave it sufficiently wet so that it does not dry by evaporation before passing into the drier. (Drying by evaporation is to be avoided since it tends to leave marks on the film.) To obtain this effect, optimum conditions for the velocity and impingement angle of the jets have to be determined. The action of the spray nozzles 36 and the air squeegees can be combined by using the spray nozzles at a high velocity. The squeegee nozzles for this preferred method of operating are described in some detail with reference to Figs. 9-12 (not shown). Specification 909,426 also is referred to.
Patent GB-1140788-A (GB)
Title: Method of regulating the current in a pulse inverter
IPC: H02M7/525
Filed: 1967-07-05
Abstract: 1,140,788. Inverting. LICENTIA PATENTVERWALTUNGS G.m.b.H. 5 July, 1967 [6 July, 1966], No. 30957/67. Heading H2F. In an inverter comprising two groups of extinguishable controlled rectifiers each of which groups can by itself operate in a freewheeling manner, the output current is regulated by applying appropriate firing and extinguishing pulses to one of the rectifiers of each group during the second part only of its conductive period. Fig. 1 shows a three-phase inverter supplied by D.C. Ug and controlled by rectifiers 1 . . . 6, each bridged by a reverse-current diode 11 ... 16. The controlled rectifiers 1 ... 6 may be extinguished by commutating capacitors. The firing and extinguishing pulses are obtained from a logic circuit 9 (Fig. 3, not shown) controlled by a three-phase pulse signal. The output current is monitored by current transformers 21, 23, 25, the outputs of which are combined at 8 and compared with a reference current Is, the difference being supplied to a trigger stage 10 which determines when the logic circuit 9 is to increase or decrease the output current. The inverter has three operational states depending on how many recifiers are conductive:- (1) Normal driving, one of rectifiers in group 1, 3, 5 and one in group 2, 4, 6 are fired. (2) Free-wheeling, only one rectifier is fired, either in the upper group 1, 3, 5 or in the lower group 2, 4, 6. Reactive current then flows through the other half of the inverter. (3) Re-generation, no rectifier is fired, energy being fed back to the source Ug. The conductive periods of the respective controlled rectifiers are shown in Fig. 4, current regulation being achieved during the second part of each conductive period when the inverter is alternately switched between normal driving and free-wheeling. The inverter may supply a squirrel-cage motor 7. Fig. 5 (not shown) relates to a system comprising an unspecified frequency/voltage converter arranged to change the mode of current control from that described to an alternate normal driving/freewheeling method in dependence on the output frequency of the inverter.
Patent GB-892448-A (GB)
Title: Arc torch
IPC: H05H1/34
Filed: 1959-09-11
Abstract: 892,448. Arc torches. UNION CARBIDE CORPORATION. Sept. 11, 1959 [Sept. 25, 1958], No. 31005/59. Class 39(3) [Also in Group XXII] Erosion and pitting of a nozzle electrode in an arc torch are reduced by providing the nozzle with one or more preferential electrodes which are removable from and in poor heat exchange relationship with said nozzle and which when impinged by the arc acquire a higher temperature than would be acquired by the adjacent nozzle wall when similarly impinged. In the arrangement shown a power source 28 (A.C. or D.C.) is connected between an inner electrode 10 and a nozzle electrode 14 provided with an annular passage 18 for cooling fluid such as water. A refractory metal, e.g. tungsten or molybdenum, insert 22 is positioned loosely in a bore 24 or alternatively is surrounded by heat insulating material so that there is poor heat exchange between the insert and the nozzle, electrical contact being maintained by a connector 26 which may be a soldered or welded joint. Additional inserts may be provided, spaced equally around the circumference of the nozzle (Figs. 3 to 5, not shown). In alternative arrangements the insert is in the form of a refractory metal sleeve loosely positioned in the bore 15 of the nozzle electrode 14 (Figs. 6 and 7, not shown) or surrounded by an additional stream of shielding gas, preferably hydrogen, to prevent oxidation of the insert (Fig. 8, not shown). Gases such as argon, helium, hydrogen, nitrogen, or mixtures thereof are supplied to the torch which may be used for promoting chemical reactions such as the pyrolysis of hydrocarbons to form acetylene, or for cutting or welding metals. U.S.A. Specification 2,858,411 is referred to.
Patent GB-275274-A (GB)
Title: Improvements in or relating to grinding machines employed for the manufacture of cutlery
IPC: B24B3/36
Filed: 1926-09-07
Abstract: 275,274. Bolton, W. H. Sept. 7, 1926. Magnetic work-holders for supporting cutlery blades during grinding have recesses A, B therein shaped to fit the double taper of the blades, so that the blades are not sprung during grinding. For grinding the first faces of the blades, the recesses are made of a shape to suit the blades in their forged or other condition. The doubly tapered recesses may be formed by cutting grooves in the holders and fitting wedge-shaped pieces F in the grooves. Reference has been directed by the Comptroller to Specification 107,229.
Patent GB-836965-A (GB)
Title: Fuels for otto-engines
IPC: C10L1/06
Filed: 1958-09-29
Abstract: An anti-knock fuel for Otto-engines of high octane rating contains diisoproxylbenzene substantially free of the ortho isomer.  The diisopropylbenzene can be added to fuels containing gasoline and benzene, the latter being either pure or containing, e.g. up to about 60% by volume, other aromatic compounds such as toluene or xylenes. Suitable fuel mixtures contain by volume 50 to 70 parts gasoline, 20 to 40 parts benzene, and 5 to 20 parts of a mixture of m- and p-diisopropylbenzenes in a weight ratio of 60 : 40.  This weight ratio can, however, be within the range of 25 : 75 to 75 : 25.  In an example, a fuel mixture of gasoline consisting of reformate, cracked gasoline and gasoline isomerate, together with benzene produced by carbonization, contains the m- and p-isomers in equal weight proportions.  Other alkyl benzenes, e.g. xylenes, ethyl benzenes, diethyl benzenes, methyl- and ethyl-isopropyl benzenes can be present in the fuels in amounts up to 15% by volume.  The antiknock properties of the m- and p-isomers, both together and separately, are compared with those of the o-isomer in fuel mixtures containing 20% by volume of the diisopropylbenzene and 80% by volume of a gasoline consisting of 60% by volume of isooctane and 40% by volume of n-heptane. Specifications 763,179, 763,181, 763,182, 763,183 and 764,338 are referred to.
Patent GB-770018-A (GB)
Title: Improved apparatus for producing curled yarn
IPC: D02G1/16
Filed: 1954-10-27
Abstract: 770,018. Finishing yarn or thread ; thread guides. ALGEMENE KUNSTZIJDE UNIE N.V. Oct. 27, 1954 [Feb. 17, 1954], No. 31058/54. Addition to 767,835. Classes 120 (2) and 120 (3). In the apparatus described in the parent Specification comprising a tube, means both for blowing a gas stream and for feeding a yarn 2 therethrough, an obstacle 11 to deflect yarn emerging from the tube, and a device 15 to take up the treated yarn at a speed less than that at which it is fed, the tube is a body 9 having a notch 8 surmounted by an adjustable thread guide 7 and to which is secured a stationary thread guide 5 and, mounted on an axle on the same side of the body thereas, are two interconnected freely rotatable thread guide pulleys 6, 13, of different diameters. Yarn passes under the guide 5, around pulley 6, under the guide 7, through a suction device, impinges against a baffle 11, thence to a guide 12, again under the guide 5, around the pulley 13 to a guide 14 and collecting drum 15 driven at a constant speed.
Patent GB-357396-A (GB)
IPC: C05C1/00
Filed: 1930-10-17
Abstract: <PICT:0357396/III/1> In a process for producing ammonium sulphate nitrate by introducing sulphuric acid and ammonia into ammonium nitrate solution with utilization of the heat of neutralization for complete or partial evaporation of the solution water, operations are carried out under strongly alkaline conditions to avoid nitrogen losses, the hot vapours arising being led directly into a rectifying column which produces concentrated ammoniacal liquor in the known manner by means of reflux cooling.  The hot water vapours containing ammonia from the saturator a pass to a rectifying column c, wherein they are enriched in ammonia, and then to a reflux condenser e which sends back part of the deposited vapours through a pipe f, the remainder being condensed in a condenser h to give concentrated ammoniacal liquor.  Liquid practically free from ammonia leaves by a pipe k.  A small quantity of steam may be introduced at l.