baber/WOPTO huggingface dataset:
Patent GB-564309-A (GB)
Title: Laminated gear pumps
IPC: F04C2/08
Filed: 1943-06-24
Abstract: 564,309. Toothed gearing. CLARK, G. M. (Equi-Flow, Inc.). June 24, 1943, No. 10196. Drawings to Specification. [Class 80 (i)] [Also in Groups XXII and XXVI] The rotors of gear-wheel pumps, having spur or double-helical teeth and meshing - screw pumps are built up of thin discs separated by very thin laminµ. The discs may be stampings from sheet metal used in the condition they come from the stamping operation. In the double-helical and screw rotors, the laminµ are cut to the shape of the overlapping surfaces only of the adjacent discs. In a modification, each disc is, preferably by a coining operation, on one or both sides shaped to be equivalent to a disc and a spacing laminµ. The discs may be of steel and the spacers of copper up to 0.003 inches thick and the whole rotor brazed together. Or, the spacers may be of fibre or plastic up to 0.01 inches thick or of thicker natural or synthetic rubber. Or, the driven rotor may be built up of plastic discs without spacers and clamped by end nuts on the shaft, spacers being used in the driving rotor. The discs may be of rubber with non-elastic spacers.
Patent GB-647475-A (GB)
Title: An electronic pulse generating circuit
IPC: H03K3/04
Filed: 1947-04-17
Abstract: 647,475. Valve generating circuits; pulsing carrier frequencies. MURRAY, P. I. KEITH-. April 17, 1947, No. 10210. [Classes 40 (v) and 40 (vi)] A generator of bursts of sine waves comprises an oscillator in which the generated waveform is fed back after rectification to the grid circuit via a resistance capacity network, the time constant of which determines the pulse repetition frequency. The Figure shows a conventional sinusoidal oscillator stage VI, the output of which is amplified in valve V2, the amplified output being applied to the rectifier W. A negative potential is thus fed to the grid of valve V1. via the R.C. network comprising capacitor C4 and resistors R11, R7 and R4. Negativegoing half-cycles of the waveform charge capacitor C4 until the grid of valve V1 blocks and oscillations cease, the valve again conducting when capacitor C4 has sufficiently discharged through resistors R7 and R11. The repetition frequency of the output derived from valve V2 is thus determined by the time constant of capacitor C4 and resistors R7, R11 and the voltage developed at the junction of resistors R10 and R11.
Patent GB-686851-A (GB)
Title: Improvements relating to fluid pressure gauges
Inventor: MANN ALFRED JOHN
IPC: G01L7/04
Filed: 1950-04-26
Abstract: 686,851. Pressure gauges. HARCOURT, Ltd., D. March 20, 1951 [April 26, 1950; Jan. 4, 1951], Nos. 10250/50 and 315/51. Class 106 (ii) A Bourdon - tube type pressure gauge has means for preventing deflection of the tube beyond predetermined limits, the said means comprising an arm h secured to the index spindle f of the gauge mechanism, and a pair of stops j for determining the range of angular movement of the arm h, this arm h having a pair of oppositely extending parts one of which lies between the stops j and the other of which is attached by a link i to the free end o of the tube b. An additional stop n is adapted to minimize any continued flexure of the tube b after the arm h has been arrested by one of its associated stops,
Patent GB-728180-A (GB)
Title: Feed apparatus for wood-planing machines
IPC: B23Q3/00
Filed: 1953-04-15
Abstract: 728,180. Wood planing. BRUNDLER, A. April 15, 1953 [April 17, 1952], No. 10303/53. Class 145. A wood planer is provided with horizontal feed rollers 10, 11 for feeding boards 15 over a cutter table 16 to plane the faces of the boards and with vertical feed rollers 21 for feeding the boards along a fence 22 to plane their edges. The complete feed unit 1 is carried by an arm 3 and pillar 7 for vertical and horizontal adjustment and can be pivoted out of the working position about a bearing block 5. The feed rollers are driven through worm gearing from a motor 2, the drive to the horizontal rollers being taken through a triangular crank strap 36 connecting a crank disc 35 on a shaft 32 with crank discs 13 on each roller shaft 12. Pivotal interconnection between the rollers 10 and 11 is provided to accommodate boards having sloping or uneven upper surfaces and arcuate members 38 carried by leaf springs 37 bear resiliently on the rollers. The vertical rollers 21 are adjustable up and down on their shafts by a lever 26 and are interconnected with a blocking member 24 which prevents boards being placed under the rollers 11 and striking the rollers 21 when these are in a lowered position. The faceplaned boards can be stacked on top of the unit on supports 41 while awaiting edgeplaning.
Patent GB-671773-A (GB)
Title: Improvements in or relating to organosilicon compounds
IPC: C08G77/00
Filed: 1950-04-26
Abstract: Polymers of the formula [-SiR2SiR2.CH2-]n where n is an integer and at least 2, are made by reacting a compound of the formula XR2 SiCH2SiR2X, in which each R is an alkyl or monocyclic aryl radical and each X is a halogen atom, with an alkali metal.  The preferred alkali metals are sodium and potassium or an eutectic alloy thereof, and they may be used in finely divided solid form or in molten form. Either the dichlorodisilmethylene compound may be added to the alkali metal suspended in an inert liquid diluent boiling above the melting point of the alkali metal at the operating pressure, e.g. xylene, or the alkali metal may be added to the dichlorodisilmethylene compound. The reaction product may be filtered and washed. Where R is methyl, the product is a slippery, viscous, high molecular weight oil from which needles of the dimer, (CH3)2SiCH2 Si(CH3)2 may be isolated. The dimer may be used for the preparation of other organosilicon compounds, and the high molecular weight liquids find use as hydrophobing agents, lubricants, hydraulic fluids and heat transfer media.  Where R is a higher alkyl radical, the polymers are wax-like and may be used as polishes.  In examples (1) (CH3)2ClSiCH2Si(CH3)2Cl was added to a heated mixture of sodium in xylene, methylene chloride being subsequently added to react with any unreacted sodium.  The liquid product was separated and stripped of solvent to yield a viscous oil from which the crystalline dimer was deposited, the remainder of the product being a high molecular weight polymer; (2) a mixture of (CH3)2Cl.Si.CH2.SiCl2.CH3 and chlorobenzene was added to molten sodium in toluene and the whole p  mixture refluxed.  The product, stripped of the solvent, was a polymer of the formula [-Si(CH3)2SiCH3. C6H5.CH2-]n of a rubbery character and soluble in non-polar solvents.ALSO:Polymers of the formula [-SiR2SiR2.CH2-]n, where n is an integer and at least 2, are made by reacting a compound of the formula X.R2SiCH2.SiR2X, in which each R is an alkyl or monocyclic aryl radical and each X is a halogen atom, with an alkali metal.  The preferred alkali metals are sodium and potassium or a eutectic alloy thereof, and they may be used in finely divided solid or molten form.  Either the dichlorodisilmethylene compound may be added to the alkali metal suspended in an inert liquid diluent boiling above the melting point of the alkali metal at the operating pressure, e.g. xylene, or the alkali metal may be added to the organosilicon compound. p  The reaction product may be filtered and washed.  In example (1) (CH3)2Cl.SiCH2Si(CH3)2Cl was added to a heated mixture of sodium in xylene, methylene chloride being subsequently added to remove unreacted sodium.  The liquid product was separated and stripped of solvent to yield a viscous oil from which the crystalline dimer (CH3)2SiCH2.Si(CH3)2 was deposited.  The compound Cl(CH3)2SiCH2.Si(CH2)2C may be prepared by contacting ClCH2Si(CH3)2 OC2H5 with an alkali metal in the presence of (CH3)2SiOC2H5.Cl.
Patent GB-556567-A (GB)
Title: Improvements in radio direction finders
IPC: G01S1/02
Filed: 1942-07-24
Abstract: 556,567. Direction - finders. STANDARD TELEPHONES & CABLES, Ltd. (International Standard Electric Corporation). July 24, 1942, No. 10369. Drawings to Specification. [Class 40 (v)] A direction-finder using a continuously rotating aerial or search coil is provided with means for obtaining simultaneously two different diagrams on the screen of the cathode ray tube by alternating two circuits in rapid succession and with means for making one of the diagrams appear in the dotted lines by interrupting the circuit giving rise to such diagram at a frequency high compared with the frequency of alternation. The two circuits may be two receivers tuned to different transmitting stations, so that the two directions may be indicated simultaneously, Figs. 1, 2, 3 (not shown) or the two circuits may comprise circuits for receiving alternately from a directional aerial system alone or in combination with a non-directional aerial, so as to enable sense as well as direction to be determined, Figs. 4, 5 (not shown). The two circuits may be alternated by blocking valves therein alternately by two sets of square-wave pulses, and the dotted line obtained by modulating one set of pulses at a high frequency, Figs. 1 and 2 (not shown). Instead of blocking two valves alternately, two deflecting magnet systems displaced by 90 degrees and rotating round the cathoderay tube to deflect the beam may be used, the magnet systems being energized alternately by cam-controlled contacts synchronously with the switching in and out of the non-directional aerial. or by other means. Four arrangements of this kind are described, Figs. 4, 6, 7, 8 (not shown). Specification 519,351 is referred to.
Patent GB-1076772-A (GB)
Title: Improvements in or relating to electrical conductors for alternating current
Inventor: KIDD DAVID ALAN
IPC: H01B11/14
Filed: 1963-03-15
Abstract: A magnetic alloy used in construction of an electrical conductor (see Division Hl) has a basic temperature between 0 DEG C. and 20 DEG C. and a composition nickel 35.23%, chromium 10.8%, silicon 1.05% and remainder iron.
Patent GB-527230-A (GB)
Title: Improvements in or relating to electron multipliers
IPC: H01J43/20
Filed: 1939-04-04
Abstract: 527,230. Electron multipliers. WEISS, G. April 4, 1939, No. 10499. Convention date, June 15, 1938. [Class 39 (i)] The secondary emitting electrodes P1 ... P5 are of concave shape so as to concentrate the electrons on to the next electrode and close to each electrode is arranged a grid electrode Rl ... R5 at a higher positive potential than the corresponding emitting electrode. The emissive electrodes may be corrugated and the accelerating grid wires run close to the corrugations. Between the electrodes may also be arranged grid electrodes G1 ... G5, each such electrode being maintained at the potential of the succeeding emitting electrode. To cool the electrodes they may be connected by conducting bars S, Fig. 3, to rings R fitting closely against the envelope, which may be blackened. If the primary cathode is of the thermionic type it is preferably of the same material as the emitting electrodes. A suitable material is an alloy of antimony or bismuth with an alkali metal such as rubidium or caesium, which may be oxidized with ozone.
Patent GB-325422-A (GB)
Title: A new or improved interconvertible tray and toy table
IPC: A47B3/06
Filed: 1929-04-05
Abstract: 325,422. Cohen, A. A., and Randall, J. R. April 5, 1929. Addition to 300,742. Trays. - An interconvertible tray and toy table comprises solely a tray and a pair of supporting legs of open frame construction, each leg structure being adapted for removable and direct engagement with the tray by slide and groove connections. The leg structures d are of similar construction to those described in the parent Specification, the flat heads c being provided with outwardly projecting edges j that, according to the present invention, are received within shallow grooves formed by pairs of tongues b pressed out from the material of the tray.
Patent GB-293504-A (GB)
Title: Improvements in and relating to colloidal iodine and the process of making the same
IPC: C01B7/14
Filed: 1927-04-20
Abstract: 293,504. James, R. W., (Merck & Co.). April 20, 1927. Disinfectants. -A disinfectant comprising iodine in a finely divided' or colloidal form is obtained by precipitating iodine'from solution at a low temperature in the presence of a comparatively small amount of a protective colloid. In the preferred form, iodine is dissolved in sodium hydroxide solution, the protective colloid (gum arabic, gelatine, or casein)' is added, suitably in the proportion of 2 per cent of the iodine, and the mixture is cooled and rapidly acidified, preferably with hydrochloric acid. The proportion of iodine in the reaction product should not exceed about 8 per cent, but the product when obtained, may be concentrated by allowing it to stand or by filtration through a Chamberland filter, and may be purified by repeated concentration (by filtration) and dilution. Specification 267,557 is referred to.
Patent GB-481640-A (GB)
Title: Improvements in or relating to means combined with tables, or like surfaces, for thereception or collection of tobacco ash and/or drips
IPC: A24F19/00
Filed: 1937-04-15
Abstract: 481,640. Smokers' ash &c. receptacles. KAVANAGH, P. April 15, 1937, No. 10675. [Class 130] [Also in Group XIV] A bowl m for receiving tobacco ash and drips is removably located under an aperture in. the table top a and covered by a grid-like member c, normally concealed retaining means being provided to prevent or render difficult unauthorized removal of the grid and bowl. The table top a is centrally apertured and to its upper surface is fitted a metal frame comprising an inner ring b having a circular ledge b<1>, an outer ring b<2> curved to cover the table edge and radial arms b<4> having grooves b<7>. The grid c of metal, porcelain, &c. rests upon the ledge b<1> and covers a bowl or receptacle m which may contain water and is supported by its flange m<1> on the upper end of a casting k screwed to the pedestal l. Recesses in the periphery of the grid c receive projections b<5> extending inwardly from the ring b, and grooves in the grid register with the grooves b<7> in the arms b<4> to lead drips to the bowl. The grid is retained in position by a pin engaging a socket e in the ring b and a spring-loaded plunger f on the ring engaging a recess in the grid. Screws j take into bosses h in the underside of the frame to secure it to the table top. A block n secured to the underside of the table top is pivoted at o to a flange k<2> of the casting k so that the top can be tilted when a catch p is released, permitting removal of the bowl and grid. Bowls ware fitted for use as ash trays or refuse holders. The spaces between the arms b<4> and the rings b, b<2> are filled in with glass, rubber &c., flush with the frame, or the frame may be inset into the top. The top may slope towards the centre. In a modification, the bowl is slidably mounted in grooves fixed under the table.
Patent GB-706079-A (GB)
Title: Improvements in and relating to cartridging machines
IPC: F42B33/02
Filed: 1952-04-28
Abstract: 706,079. Filling cartridge cases. NIEPMANN, F., [trading as MASCHINENFABRIK F. NIEPMANN & CO.], April 28, 1952 [April 27, 1951], No. 10676/52. Class 9(1) Gelatinous explosive, fed by screw conveyer 2 into hollow mandrels 4 on a rotary member 3, is pressed into cartridge cases 11 fed to trays 13 and pushed over the mandrels by plungers 7. The conveyers extrude explosive into four mandrels 4 at one time arranged on two rotary members 3, Fig. 5, rotating in opposite directions. The filling is regulated by connecting the plungers 7 to a clutch for stopping the drive of the conveyers. The filled cases, after rotation of the members 3, are pushed by plungers 9 into chambers 6 on a revolving drum 5, the drum during rotation occupying filling, folding, and ejecting positions 15, 16, 17 respectively, Fig. 3, and rotating at one-half the speed of the members 3. The plungers 9 are given a slight rotation immediately before return to normal position in order to release them from the explosive.
Patent GB-269923-A (GB)
Title: A process and apparatus for treating fish, animal or vegetable products
IPC: A22C25/00
Filed: 1927-04-22
Abstract: 269,923. Avanzi, M. April 22, 1927. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 23, 1927]. Draining fish and like materials.-In a process for the preservation of fish, or other animal or vegetable food, materials are first drained of juice, blood, &c., in a centrifugal apparatus consisting of a rotary conical iron frame 1, Fig. 1, covered by a wooden platform 8 having partitions. The frame 1 is attached to a sleeve 4 rotating on bearings on a shaft 2 secured in a concrete foundation 3, a ball bearing 7 being provided at the top. The material is secured to the platform by an edge board 9, or by network sacks or suspension hooks. The frame is normally rotated at 84 revolutions per minute by means of a belt-driven pulley. A band brake 11 operated by a lever 12 is also provided. In the case of fish, means may also be provided for forcing a salt lye therethrough during the centrifugal treatment.
Patent GB-650388-A (GB)
Title: A new or improved method of and means for cutting or burning slag, metals and the like
IPC: B23K9/013
Filed: 1948-04-20
Abstract: Means for cutting or burning slag or metal from Bessemer converters comprises concentric inner and outer tubes of electrically conducting material separated by an insulating sleeve, the inner tube being connected to a supply of oxygen under pressure and one of the tubes being employed as an electrode while the other is earthed.  The tubes may be made of metal or carbon or one may be of metal and the other of carbon. For heavy work, the apparatus may be mounted on a tripod and provided with an extended handle.  The Provisional Specifications describe also an electrode comprising simply a tube through which oxygen is supplied, or a coated rod within and extending slightly beyond a tube through which oxygen is supplied or a hollow carbon rod containing a metal tube.
Patent GB-1112919-A (GB)
Title: Improvements relating to apparatus for use in the culture of micro-organisms
IPC: C12M1/00
Filed: 1966-03-11
Abstract: An apparatus for micro-biological cultivation includes a temperature and atmospherically conditioned chamber 9, Fig.4, containing a support 21 for a number of culture receptacles and the support is selectively coupled to a rotating crank 29 in such a way that the support moves with a reciprocatory or rotary motion.  The chamber is furnished with two openable handholes 6 for introducing, setting and removing culture flasks, a series of ports 14 providing adjustable venting, a transparent canopy 12 that can be completely swung up and over by means of hinges 4 and handles 5, <PICT:1112919/C6-C7/1> <PICT:1112919/C6-C7/2> and a table 22 formed with nests for receiving culture flasks. The table and support 22, 21 are mounted on ball bearings 20 and are centralized by four tension springs 23.  The motion is determined by the position of a hand lever 17, Fig. 8, which is readily accessible by lifting the canopy 12.  Raising the lever 17 about its pivot 41 causes two follower roller feet 38 to be released from their engagement with linear guideways 43 (providing for reciprocatory movement) and a connecting rod 34, which is already permanently connected to the support at the end 34A through a universal joint, to be brought into engagement with the support at the end 8 (providing for rotary motion).  The throw of the crank 29 with respect to the connecting rod 34 is adjustable through a hand wheel (53, Fig. 5, not shown).  The crankshaft is driven by an electric motor through a variable speed gear-box. Two mercury thermometers with double scales, fitted on the shelf 16, Fig. 4 inside the canopy, control a fan and either a heating unit or a refrigerating unit (as the case may be) within the box 7 whereby the temperature is regulated.  The chamber may have an atmosphere of air or of nitrogen.
Patent GB-903013-A (GB)
Title: Treatment of expanded thermoplastic polymeric material
Inventor: CLELAND WILLIAM JAMES
IPC: C08J9/14
Filed: 1960-03-28
Abstract: Expandable thermoplastic polymeric material is prepared by impregnating a comminuted closed-cellular expanded thermoplastic polymeric material having a particle diameter below 0,5 inches with a normally gaseous or low-boiling organic expanding agent. Polymeric materials specified include polystyrene, polymerized substituted styrenes, polymethyl methacrylate, polyvinyl chloride and polypropylene.  Normally the impregnated, comminuted expanded material is mixed with virgin pre-expanded thermoplastic polymer beads and the mixture finally expanded in a vented mould. Impregnating agents specified are mixtures of n-butane and isobutane, pentanes, methyl chloride and bromide and dichlorodifluoromethane.ALSO:Expandable thermoplastic polymeric material is prepared by impregnating a comminuted closed-cellular expanded thermoplastic polymeric material having a particle diameter below 0,5 inch with a normally gaseous or low boiling organic expanding agent. Polymeric materials specified include polystyrene, polymerised substituted styrenes, polymethyl methacrylate, polyvinyl chloride and polypropylene.  Normally the impregnated, comminuted expanded material is mixed with virgin pre-expanded thermoplastic polymer beads and the mixture finally expanded in a vented mould. Impregnating agents specified are mixtures of n-butane and isobutane, pentanes, methyl chloride and bromide and dichlorodifluoromethane.
Patent GB-707346-A (GB)
Title: A bag making machine
IPC: B31B160/10
Filed: 1952-04-30
Abstract: 707,346. Making bags. WINDMOLLER. A., and HOLSCHER, F., [trading as MASCHINENFABRIK WINDMOLLER & HOLSCHER]. April 30, 1952 [May 21, 1951], No. 10939/52. Class 94 (2) [Also in Group VIII] In an apparatus for the manufacture of flat bags or the like from heat sealable material, preferably transparent, the web of material 1 is drawn from a drum 4 over a guide roller 5 and through a tube former 6 by feed rollers 2, 3 the web being so folded that the edges 11, 12 remain at a distance a apart. A carriage supported on rollers 35 carries heat sealing members 33, 34, and is moved forward at the same speed as the web and returned quickly by means of a crank 38, lever 42, and connecting rod 43. During the forward movement of the carriage the members 33, 34, which are heated, come into contact with the web which is heat sealed along a number of strips 13, 14 whose spacing corresponds to the width of a bag, and during the return movement the parts 33, 34 move apart, the movement of the carriage being so adjusted that the succeeding group of heat sealed strips is formed at a distance corresponding to the width of a bag. Delivery rollers 18, 19 which are also cooling rollers, draw the web through the heat sealing station and cutters 15, 16 longitudinally cut the web at 17, and deliver it to transverse cutters 20, 21, which cut the web in the centre of the strips 13, 14, each cutting operation supplying two completed bags 24, 25 to the delivery table 26. At the open end of the bag the free edge of the rear wall extends beyond the free edge of the front wall to facilitate opening.