baber/WOPTO huggingface dataset:
Patent GB-497662-A (GB)
Title: Improvements in obstetric bedsteads
IPC: A61G13/00
Filed: 1937-06-22
Abstract: 497,662. Surgical -bedsteads. WHITFIELDS BEDSTEADS, Ltd., and ADAMS, E. June 22, 1937, No. 17370. [Class 52 (ii)] In an obstetric bedstead of the kind comprising independent and separable head part and foot part frames A, B, Fig. 1, the surface of the foot part is displaceable vertically by, for example, a screw - actuated mechanism, into or out of alignment with the surface of the head part so that in the out of alignment position the foot part of the bedstead is capable of being moved manually to a position below the head part of the bed, and means are provided whereby the two parts of the bed may be operatively engaged. The legs 6 of the foot part Bare telescopic, the surface 2 being carried on sliding pillars 9 and supported from frame members 8 by means of toggle links 10, the central pivots of which are connected in pairs to transverse yokes 11. The two yokes 11 are drawn together or separated by a screwed rod 13 to raise or lower the surface 2. The two centre legs of the foot part are preferably cranked to engage over a transverse rail 15 of the head part to secure the two parts together. The head part may be provided with castor mechanism as described in Specification 258,003, [Class 52 (i)]. In a modified form, the means for adjusting the surface 2, Fig. 6, comprises four links 17 pivoted to the surface 2 and having at their lower ends rollers 18 running on rails 19 mounted transversely of the underframe. The two rollers on each side are mounted on a common shaft, each shaft carries a yoke 21, and the two yokes are drawn together or separated by means of a screwed rod 23.
Patent GB-1091013-A (GB)
Title: Improvements in or relating to the attachment of braid-covered corrugated tubing to solid end sleeves
Inventor: SHEFFIELD KENNETH JOHN WILLIAM
IPC: F16L13/02
Filed: 1963-05-02
Abstract: 1,091,013. Tube couplings. PLESSEYUK Ltd. April 21, 1964 [May 2, 1963], No. 17436/63. Heading F2G. A method of anchoring an external metal braided sheath 5 of a flexible corrugated metal tubing 6 attached to a rigid tubular end piece 4, wherein firstly, a collar 3 which is externally tapered from a maximum diameter equal to that of the tubing, is so arranged on the endpiece or a non-corrugated tubing end portion inside the sheath as to be prevented from axial movement towards the adjacent corrugated tubing, and secondly, a correspondingly tapered ferrule 1 is slid over the braid and welded thereto at the outer end so that longitudinal forces on the sheath are predominately resisted by the consequential clamping action of the ferrule on the collar. In the embodiment illustrated by Fig. 1, helically corrugated tubing 6 is butt-welded to the endpiece 4 along a helical line 7 as described in Specification 1,091,014 and the collar welded to the endpiece at 8. The sheath 5 is turned outwardly over the smaller end of the ferrule 1, abutted by a slidably mounted weld ring 2, and welded therebetween. In a modified embodiment, Fig. 5 (not shown), the endpiece is formed with both a tapered guide spigot (35) to which the tubing 6 is welded and a flange (36) fixedly locating a correspondingly stepped collar (23) relative to the tubing. The welding ring (22) is likewise stepped to avoid inadvertent welding of said ring to the endpiece. In Figs. 2 and 3 (not shown), a non-corrugated tubing end-portion extends through the collar to form a retaining flange butt-welded to both the collar and endpiece. In a further modification, Fig. 4 (not shown), the welding ring is carried by tubular extension formed on the collar.
Patent GB-1155511-A (GB)
Title: A process for the manufacture of 9beta,10alpha-Steroids
IPC: C07C59/205
Filed: 1967-04-17
Abstract: 1,155,511. 9#,10α-Steroids. F. HOFFMANNLA ROCHE & CO. A.G. 17 April, 1967 [19 April, 1966], No. 17440/67. Headings C2C and C2U] A process for the preparation of 9#,10α- steroids of formula wherein R<SP>1</SP> and R<SP>2</SP> each represent hydrogen, C 1-6  alkyl, C 1-6  alkoxy or C 1-6  alkylthio; R<SP>4</SP> represents hydrogen or a C 1-6  hydrocarbyl group free from aliphatic unsaturation; R<SP>6</SP> and R<SP>7</SP> each represent hydrogen, halogen, C 1-6  alkyl, C 1-6  alkylthio or C 1-6  alkanoylthio; R<SP>11</SP> represents hydrogen, hydroxy or C 1-6  alkanoyloxy; R<SP>16</SP> represents hydrogen, hydroxy, C 1-6  alkyl, C 1-6  alkoxy, or C 1-6  alkanoyloxy, or, when there is a 17#-(acetyl, haloacetyl or hydroxyacetyl) group, R<SP>16</SP> may also be fluorine; and Z represents carbonyl, a 17#-hydroxy-17α-(C 1-6  alkanoic acid) lactone group, or a group of formula CR<SP>17α</SP>R<SP>17#</SP>, wherein either R<SP>17α</SP> is hydrogen or C 1-6  aliphatic hydrocarbyl and R<SP>17# </SP>is hydroxy or C 1-6  alkanoyloxy or R<SP>17α</SP> is hydrogen, halogen, alkyl, hydroxy or C 1-6  alkanoyloxy and R<SP>17#</SP> is acetyl, haloacetyl, hydroxyacetyl, or 1,1-ethylenedioxy-ethyl, comprises reacting a 4-oxa-steroid of formula (see Specification 1,155,512) with an organometallic compound of formula R<SP>4</SP>-CH 2 -Li or R<SP>4</SP>-CH 2- Mg-halogen, and rearranging and dehydrating the resulting 4,5-seco-3,6-cyclosteroid of formula by treatment with an acid or base.
Patent GB-786558-A (GB)
Title: Improved gas pump
IPC: F04B39/00
Filed: 1945-07-09
Abstract: 786,558. Liquid piston compressors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. July 9, 1945, No. 17517/45. Class 8(1). A pump for corrosive gaseous media has a pair of interconnected chambers, a pumping liquid, and gas intake and discharge valves actuated by means responsive to a predetermined position of the liquid. In the embodiment of Fig. 1, the chambers 6, 22 are connected by a conduit 21 and have an outlet 18 to atmosphere closed by a valve 19 and a conduit 31 from a supply of gas to be pumped closed by a valve 32. Compressed air from a tank 3 is admitted through a valve 7 into the chamber 6 and pumping liquid 42 therein is driven out to increase the volume of liquid 41 in the chamber 22, the gas in the chamber being compressed and expelled through a valve 34 into a container 36. When liquid 41 reaches the ends 30 of electrodes 28, 29 an electric circuit is completed to close valves 34 and 7 and open valves 32 and 19. Pressure in chamber 22 causes liquid 41 to flow into chamber 6 which is vented to atmosphere at 18, gas being drawn in through valve 32 into chamber 22. When the liquid 42 reaches the ends 16 of electrodes 13, 14, an electric circuit is completed to close valves 19 and 32 and open valves 7 and 34, and the cycle is repeated. In another embodiment the chambers are placed in contact side by side with connections to a pumping liquid reservoir. In a further embodiment there is no operating medium such as compressed air but the liquid is conveyed to and from the chambers by a pump through conduits having valves controlled by said electrodes. In this embodiment each chamber pumps gas.
Patent GB-146250-A (GB)
Title: Improved stopper or closure for containers, casks or the like
IPC: B65D43/02
Filed: 1920-06-28
Abstract: 146,250. Schmid, J. J. Aug. 6, 1917, [Convention date]. Heads.-A closure for the end a of a cask, container, &c. comprises a metal plug f having a flange h forming a groove, which co-operates with a beaded flange e on the edge of the opening or nozzle d, the plug being secured to the nozzle by means of a knurling tool. The height of the groove in the plug is the same as that of the nozzle above the end of the cask &c. A wire may be inserted at k between the lower exterior surface of the flange e and the interior of the flange h, the extremities of the wire passing through a hole in the flange h, so that by pulling the ends of the wire the flange becomes torn and the plug released.
Patent GB-932404-A (GB)
Title: Concrete mixing apparatus
Inventor: GREEN ROWLAND PERCY
IPC: B28C5/42
Filed: 1960-05-18
Abstract: 932,404. Concrete mixers. STOTHERT & PITT Ltd. May 16, 1961 [May 18, 1960], No. 17597/60. Class 86. [Also in Group XXIX] In a vehicle-mounted concrete mixer the rotary drum 2 is driven by a fixed displacement hydraulic motor 4 supplied by an infinitely variable displacement rotary pump 5 driven off the vehicle engine 6. At the rear of the vehicle are mounted manual controls comprising a reversing lever 14; a lever 12 to vary the speed of the drum by alteration of the displacement of the pump 5; and an engine throttle lever 13 connected to the accelerator pedal 17 which is further connected to an arm 11 of a mechanical compensating device 9 (see also Fig. 3, not shown) such that the pump displacement remains constant at the selected output irrespective of variation in engine throttle position. Alternatively the compensating device may be controlled directly by the engine speed through a centrifugal or other governor. In another embodiment, Fig. 5, the motor 4 is supplied by a variable displacement axial piston tilting head pump 5 controlled through the servo-mechanism 36 by a constant speed device 40 which replaces the mechanical compensating device 9 of the previous embodiment. A lever 41 replacing the levers 12 and 14 selects the direction and speed of rotation of the drum, and compensation for variation in engine speeds is provided by a pump 43 directly driven from the vehicle engine and controlling the constant speed device 40 through a flow controller 44 having a lever 54 providing two flow rates and consequent ranges of agitating speeds. The pump 43 also acts as a make-up pump. A filter 52, cooler 53, pressure gauges 60, 61 and pressure relief valve block 51 with manual unloader lever 64 may also be provided. Specifications 816,556 and 819,565 are referred to.
Patent GB-1472375-A (GB)
Title: Motion detector for weighing scale
IPC: G01G23/37
Filed: 1975-04-28
Abstract: 1472375 Weighing HOBART CORP 28 April 1975 [29 April 1974] 17614/75 Heading H3H [Also in Division G4] Weight signals (from a weighing scale) are stored and compared, to detect two (or more) weight changes in the same direction. The output of a digital weighing scale in a grocery checkout area is converted to serial BCD form and sent to a shift register in a keyboard/display unit in the area, the weight signal being supplied in parallel form from the shift register to a memory (with display). The memory content is sent to a computer together with price per unit weight information entered into another memory (with display) from the keyboard, the computer calculating the price and returning it to a memory (with display) in the keyboard/ display unit. The least significant digit (or all digits) of the weight from the shift register is compared with that of the previous weight reading in the memory fed from the shift register to indicate "greater", "less" or "equal". The "greater" and "less" outputs of the comparator set first and second flip-flops respectively and are ANDed with the set outputs of these flip-flops to set third and fourth flip-flops respectively, the "equal" output of the comparator clearing the third and fourth flipflops, which control a retriggerable monostable to produce an output on two successive weight changes in the same direction (ignoring any "equal" comparator outputs between them). This monostable output, indicating motion of the weighing scale, inhibits display of the weight, computation of the price and display of the price. The weight memory and display are also inhibited if the weight in the shift register is out of limits. The "motion" signal may be produced only on three, four or more weight changes in the same direction, as a modification.
Patent GB-835375-A (GB)
Title: Method of printing on a record member
IPC: G03G7/00
Filed: 1958-06-03
Abstract: 835,375. Electrophotographic processes. NATIONAL CASH REGISTER CO. June 3, 1958 [June 27, 1957], No. 17660/58. Drawings to Specification. Class 98(2) [Also in Groups XVI and XXXV] An electrostatic latent image is developed with a dry powder consisting of microscopic capsules containing liquid marking material which is expressed therefrom on the application of pressure. The liquid may be an oil-base ink or dye, or a colourless colour-resistant substance. The capsules may be mixed with small glass beads. Specifications 751,600 and 759,800 are referred to.
Patent GB-1064447-A (GB)
Title: Producing acetylene by pyrolysis
IPC: C07C2/76
Filed: 1964-04-29
Abstract: In a modification of the processes described in Specification 1,007,423, quenching of the hot effluent gases is carried out with dry, oxygen-free gas, e.g. dry oxygen-free cooled reactor effluent, hydrogen, nitrogen and hydrocarbons.
Patent GB-389808-A (GB)
Title: Method for obtaining pictures
IPC: G03C7/00
Filed: 1931-06-19
Abstract: 389,808. Composite photographs and pictures. DUMAY, J. M. L. DE PERRINELLE-, 86, Rue des Martyrs, Paris. June 19, 1931, No. 17855. Convention date, June 23, 1930. Void [Published under Sect. 91 of the Acts]. [Classes 97 (i) and 98 (ii).] Photographs, pictures and drawings, which may be examined equally well either directly or by transmitted light, are produced by superimposing in register two or more photographs &c. exhibiting the same or nearly the same subject, all of the components being made on paper, or one or more of them being so made, and the remainder being made on glass, film or other transparent or translucent support. The components may be uncoloured, or one or more of them may be coloured either directly on the front or back, or upon a transparent or translucent sheet of paper superimposed on the component. Any component may exhibit " the whole or only part of the colours." Each support may carry a component on one side, or two components on opposite sides. Copies may be made by photographing the composite picture illuminated by transmitted light, and exhibit enhanced contrasts. If the components differ in slight details, such as the position of the arms or mouth of a person, an animated effect is observed when the picture is examined alternately by transmitted light and directly, and " this affords a method for obtaining animated pictures," e.g. for advertising.
Patent GB-184157-A (GB)
Title: Improved process for starting synchronous electrical machines
IPC: H02P1/46
Filed: 1922-06-29
Abstract: 184,157. Akt.-Ges. Brown, Boveri, et Cie. July 30, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings to Specification. Systems depending on the use of two or more machines.-In switching-in a synchronous machine such as a converter, the machine is driven by a motor approximately up to synchronous speed and is then connected to the mains through choking-coils. The order of these operations may be inverted. When exact synchronism is reached, the choking-coils are short-circuited, and the driving-motor is uncoupled.
Patent GB-1183531-A (GB)
Title: Developing electrostatic images
IPC: G03G15/24
Filed: 1967-04-19
Abstract: 1,183,531. Developing electrostatic images. RANK XEROX Ltd. April 19, 1967 [April 25, 1966], No.17962/67. Heading G2H. An electrostatic image is formed on a drum 10 by charging and exposure in known manner. A roller 20 having a serrated periphery is partly immersed in a container 21 for developer 13 comprising negatively charged toner particles suspended in an insulating liquid. A meniscus 22 is maintained between the roller 20 and a web 14 fed in synchronism with the drum 10. Toner particles in the meniscus have a high turbulence due to the relative movement of drum 10 and roller 20. The negatively charged toner particles are attracted to the positively charged image areas and so deposit in image formation on the drum. The container may be connected to a negative voltage supply and the roller 20 to a positive voltage supply to increase toner concentration and reduce background.
Patent GB-380523-A (GB)
Title: Improvements in distributing valve for rock drills
IPC: B25D9/18
Filed: 1931-06-22
Abstract: 380,523. Rock - drill valve gear. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Ingersoll-Rand Co. ; 15, Exchange Place, Jersey City, New Jersey, U.S.A.) June 22, 1931, No. 18007. [Class 122 (ii).] The valve chamber P comprises an enlarged portion Q and a reduced portion R which house a hollow distributing- valve S the stem T of which slides in the part R and is constantly open to the atmosphere. The valve has pivoted supply flanges V, W between which pressure fluid is introduced from a supply Y and an annular passage Z. The cylinder has inlet passages b, c and a piston-controlled exhaust port E. The ports e in flange V are larger than the ports f in flange W. The flanges V, W have forward and rearward annular actuating-areas g, h upon which pressure acts to throw the valve rearwardly and forwardly respectively. The valve has supplementary actuating areas j, k upon which compression acts to assist the pressure acting on the areas g, h respectively. In the position shown in Fig. 1, the pressure fluid holds the valve rearwardly. When the piston passes the exhaust port E, the compression on the area k and the pressure on the area h will reverse the valve.
Patent GB-595788-A (GB)
Title: Dithio acid derivatives
IPC: C08K5/00
Filed: 1944-09-21
Abstract: Amine salts of dithiofuroic acid are prepared by direct addition of the amine to the acid in the presence or absence of organic solvents of water.  The salts of primary and secondary aliphatic amines and cycloaliphatic amines, primary aromatic amines and secondary N-aliphatic-N-aromatic amines may also be prepared by adding the selected amine to an aqueous solution of ammonium dithiofuroate, the amine salt being precipitated. Specified amines include methylamine, ethylamine, propylamines, butylamines, amylamines, n-octylamine, allylamine, cyclohexylamine, ac-tetrahydronaphthylamine, furfurylamine, ethylene diamine, diethylamine, di-allylamine, N-methyl ethylamine, dicyclohexylamine, piperidine, morpholine, aniline, anisidines, p-aminodiphenyl, phenylene diamine, N-benzyl aniline, dimethyl aniline and pyridine.  In an example, piperidine is added to an aqueous solution of ammonium dithiofuroate and crystalline piperidine dithiofuroic acid salt removed by filtration. The salts may be used as vulcanization accelerators.  Samples have been furnished under Sect. 2 (5) of ethyl- and isopropyl ammonium dithiofuroate prepared by adding aqueous monoethylamine and anhydrous isopropylamine respectively, to a benzene solution of dithiofuroic acid.  The Specification as open to inspection under Sect. 91 describes a method of preparing the primary aliphatic amine salts comprising reacting the desired amine with furfural, sulphur and hydrogen sulphide, and an example is given wherein cyclohexylamine is so reacted in benzene.  The amine salts may also be prepared by reacting an amine salt, such as the hydrochloride or sulphate, with ammonium or sodium dithiofuroate in aqueous solution.  This subject-matter does not appear in the Specification as accepted.
Patent GB-118532-A (GB)
Title: Improvements in Labelling Machine.
Inventor: BRETTELL FREDERICK GILBERT
IPC: B65C3/20
Filed: 1917-12-06
Abstract: 118,532. Brettell, F. G., (0. & J. Machine Co.). Dec. 6, 1917. Coating-machines.-In a bottle-labelling machine gum is transferred to label-pickers 59, Fig. 11, from a supply roller 116 by a roller 119 carried by reciprocating arms, and the roller 116 is rotated in a tank 105 which is supported upon three levelling-screws 107, 108 and is held in position by a tapered pin 109 engaging in a socket 110 on the tank and secured by a screw 111. A screw 112 adjusts the tank horizontally. The thickness of gum on the roller 116 is regulated by a scraper 97 secured to a shaft 90, which can be rocked to adjust the scraper by an arm 91 controlled by a screw 93 and a spring 95; the scraper is pivoted at 101 to a bracket 100 secured to the shaft 90 so that it can be adjusted to secure an even thickness of gum on the roller 116 by means of an arm 102, a screw 104, and a spring 99. Scrapers 98 secured to the shaft 90 act on the ends of the roller 116. A number of labelpickers radiate from a shaft 57 which is rotated intermittingly to carry labels from a pile L to the bottles B. The gummed pickers are reciprocated along the shaft 57 by cam and lever mechanism to gum the labels and withdraw them from the pile.
Patent GB-928069-A (GB)
Title: Automatic pipette
IPC: B01L3/00
Filed: 1961-05-18
Abstract: <PICT:0928069/III/1> <PICT:0928069/III/2> A pipette has a lower stem portion linked to outlet and inlet passages by a three-way valve, which is electrically operated in response to an electrical sensing device associated with an overflow chamber and the liquid level in it; the upper part of the pipette is narrowed to form an overflow passage, the outlet of which is enclosed above and below by the overflow chamber which incorporates an electrical control means adapted to operate the valve and prevent the entrance of liquid when the liquid in the overflow chamber reaches a pre-determined level. As shown in Fig. 1, the stem 6 is linked by three-way valve 7 to inlet 8 and outlet 9, and the pipette body 5 has a reduced section 13 which narrows to the outlet 16 which is situated in the overflow chamber 15.  A drain conduit 17 leads from the bottom of this chamber, and at the upper end there is a reduced section 20 which supports an electrode 23, the height of which is adjustable to lie next to the drain conduit 17.  A second electrode 26 is situated along the conduit as shown.  Liquid enters via inlet 8 and channel 11 filling the body 5, overflows, part filling chamber 15 and finally runs away through conduit 17 and in doing so completes the circuit between the two electrodes and initiates the signal to turn off the tap.  The excess liquid drains from the overflow chamber and the pipette is ready for use, being emptied by outlet 9.  Fig. 3 shows another embodiment in which the electrical control means is a photo-cell and a lamp, and the design of the drain conduit 38 from the overflow chamber 27 is slightly different.  At the top of chamber 27 there is a reduced portion 28 which supports a block 29, a neon bulb 34 and a photocell 35 so that light from the bulb passes through the reduced portion 28 before reaching the photocell.  The overflowing liquid fills the chamber 27 and rises up the reduced portion 28 where, if it is opaque the liquid cuts off the light to the photocell; or if the liquid is clear it acts as a lens to condense and increase the light falling on the cell. Either of these circumstances can be used to initiate the operation of the three-way valve.  The upper part of conduit 38 is approximately level with the photo-cell and therefore on turning off the valve, the conduit acts as a siphon to empty the overflow chamber.