baber/WOPTO huggingface dataset:
Patent GB-755753-A (GB)
Title: Disproportionation of chlorosilanes
IPC: C07F7/08
Filed: 1954-03-04
Abstract: A chlorosilane having at least one hydrogen bonded to silicon is disproportionated by contacting the heated silane with an organic amine, a salt thereof, or a complex thereof with a chlorosilane, a heterocyclic nitrogen base, hydrogen cyanide or an aliphatic or substituted aliphatic mono-, di-, or polynitrile as catalyst. Exemplified catalysts are trimethylamine, trimethylamine hydrochloride, trimethylamine-trichlorosilane complex, diethylamine, triethylamine, cetyl dimethyl amine, N,N1-tetraethyl ethylene diamine, pyridine, hexamethylene tetramine, acetonitrile, polyacrylonitrile, succinonitrile, glutaronitrile, adiponitrile, pimelonitrile, azelaionitrile, sebaconitrile, and suberonitrile, and 1-15 per cent may be used. The reaction may be effected by heating the chlorosilane and catalyst in an autoclave at say 150-200 DEG  C., by passing chlorosilane vapour over the catalyst, or by heating under atmospheric pressure in a flask with a distillation column to secure refluxing below 200 DEG  C. with the lower boiling component distilling off.  The Specification refers to converting trichlorosilane to dichlorosilane and silicon tetrachloride, and dichlorosilane to mono and trichlorosilanes.  Nitrile catalysts may be activated by heating with a chlorosilane at above 150 DEG  C., distilling off all low-boiling compounds to leave a high-boiling mixture, e.g. ethyldichlorosilane and adiponitrile.  With activated catalysts the reaction temperature may be below 100 DEG  C., e.g. 30-60 DEG  C.ALSO:A chlorosilane having at least one hydrogen bonded to silicon is disproportionated by contacting the heated silane with an organic amine, a salt thereof, or a complex thereof with a chlorosilane, a heterocyclic nitrogen base, hydrogen cyanide or an aliphatic or substituted aliphatic mono-, di-, of polynitrile as catalyst.  Exemplified catalysts are trimethylamine, trimethylamine hydrochloride, trimethylamine - trichlorosilane complex, diethylamine, triethylamine, cetyl dimethyl amine, N, N1-tetraethyl ethylene diamine, pyridine, hexamethylene tetramine, acetonitrile, polyacrylonitrile, succinonitrile, glutaronitrile, adiponitrile, pimelonitrile, azelaionitrile, sebaconitrile, and suberonitrile, and 1-15 per cent may be used. The reaction may be effected by heating the chlorosilane and catalyst in an autoclave at say 150-200 DEG C., by passing chlorosilane vapour over the catalyst, or by heating under atmospheric pressure in a flask with a distillation column to secure refluxing below 200 DEG C. with the lower boiling component distilling off.  The Specification refers to converting trichlorosilane to dichlorosilane and silicon tetrachloride, and dichlorosilane to mono- and trichlorosilanes.  Nitrile catalysts may be activated by heating with a chlorosilane at above 150 DEG C., distilling off all low boiling compounds to leave a high boiling mixture, e.g. ethyldichlorosilane and adiponitrile.  With activated catalysts the reaction temperature may be below 100 DEG C., e.g. 30-60 DEG C.
Patent GB-115033-A (GB)
Title: Improvements in or relating to Woven Cartridge and like Belts more especially for use with Machine Guns.
IPC: F42B39/08
Filed: 1918-04-15
Abstract: 115,033. Universal Patents Co., (Assignees of Jennings, V. H.). April 19,1917, [Convention date]. Cartridge belts .-Consists in weaving these in one piece with transverse cartridge pockets and a longitudinal split marginal edge to facilitate the insertion of the cartridges or the belt opening device of a loading- machine. Fig. 4 shows the pockets formed by weaving two plies of material together across a portion only of their width so as to provide upper and lower divided edges D<2>, D<1>. The Specification as open to inspection under Sect. 91 (3) (a) also describes with reference to Fig. 5 (cancelled) a belt in which the usual metal uniting members E are shortened to provide an upper divided edge D<2>. This subject-matter does not appear in the Specification as accepted.
Patent GB-591420-A (GB)
Title: Improvements in or relating to spark gap or sparking plug electrodes
IPC: B32B15/01
Filed: 1945-03-14
Abstract: The following rhenium alloys may be used for sparking plug or spark gap electrodes:-rhenium 51-99.5 per cent. the remainder at least one of the platinum group metals; rhenium 51-99.5 per cent. the remainder at least one of tungsten, molybdenum, tantalum; rhenium 70-95 per cent. the remainder an eutectic composition containing at least two of the metals nickel, iron, cobalt and molybdenum.  Alternatively, the electrodes are of a sintered metallic composition containing 70-95 per cent. rhenium and the remainder nickel and copper which produce a liquid phase during sintering.  A core material for the electrodes comprises at least 10 per cent. of two of the elements molybdenum, copper and nickel and the remainder tungsten plus rhenium, or an alloy comprising 5 per cent. nickel, 5 per cent. molybdenum and the remainder tungsten plus rhenium.
Patent GB-277235-A (GB)
Title: Improvements in or relating to clamping bars for slicing machines
IPC: B26D7/02
Filed: 1927-03-07
Abstract: 277,235. White, A. E., (Dayton Scale Co.). March 7, 1927. Cutting slices in succession: holders.-A clamping- bar for a slicing-machine is adapted to clamp pieces of meat of irregular shapes, said bar comprising a supporting structure with a number of clamping elements guided for vertical movement therein. Resilient devices normally hold the clamping elements in a mid.way position but permit yielding displacements in both directions, when the clamp is brought into operation, so that the elements automatically assume positions conforming with the shape of the meat. As shown in Figs. 1, 3, the invention is applied to the clamping device described in Specification 221,719, the bar 10 having a spaced cover plate 17 which forms, with the bar 10, a pocket or recess in which the plates 16 which carry the tines 15<a> are adapted to slide. Each plate 16 is slotted at 21 to receive studs 18 on the bar 10. Compression springs 19, 20 arranged above and below the studs, normally hold the plates 16 and tines 15<a> in the normal midway position. The upper ends of the plates are bevelled at 21<1> and the space above them is filled with small metal balls or pellets 22 whereby, if one plate 16 is 'raised by early contact with the meat, the consequent displacement of the pellets 22 forces adjacent plates 16 downward, the tines 15<a> thus conforming automatically to the share of the meat.
Patent GB-733620-A (GB)
Title: Improvements in and relating to spring assemblies in or for seats, mattresses, cushions, seat backs and the like
IPC: A47C7/32
Filed: 1952-03-11
Abstract: 733,620. Spring upholstery. SIBTHORP, J. June 9, 1953 [March 11, 1952; April 10, 1952; Dec. 24, 1952], Nos. 6358/52, 9298/52 and 32788/52. Class 52 (4). Flexible ties 2 for connecting helical tension springs 1 or rubber cords, to form a spring surface or a foundation for upholstery springs, comprise sleeves A connected by a diametrically aligned web B and made of resilient flexible material such as rubber or synthetic rubber. The springs or cords may span the frame of the article and be connected into a mesh formation by the sleeves or endless loops may be used which may be common to both the back and seat surfaces of a chair.
Patent GB-434650-A (GB)
Title: Improvements in collars for personal wear
IPC: A41D27/18
Filed: 1935-02-28
Abstract: 434,650. Lace and like collars for personal wear. WERTHEIM GES., A., 126, Leipziger Strasse, Berlin. Feb. 28, 1935, No. 6414. Convention date, Jan. 19. [Class 141] An insertion collar for ladies' apparel, comprising a lower part 1, which is inserted in the neck opening of a dress, and a facing 2, is provided with an exchangeable trimming 5 attached thereto by means of press studs 4. The interengaging parts of the press studs are attached respectively to the underside of the facing 2 and to the upper side of the lower part 1 and, where the trimming is made of lace or other perforated material, the press studs are connected together through the perforations in the trimming. If the trimming is of unperforated material, it is provided at its inner edge with a strip of lace or perforated material. The facing 2 of the insertion collar may terminate at the front in tie ends ; or the trimming may take the form of a lace collar 6, as shown in Fig. 4, or a bow 9, as shown in Fig. 6, provided with a plurality of holes 10 so as to serve to adjust the width of the insertion collar at the front.
Patent GB-1249780-A (GB)
Title: Improved device in a typewriter for indicating the width of abottom margin of a sheet
Inventor: PRADE WOLFGANG
IPC: B41J29/44
Filed: 1970-02-11
Abstract: 1,249,780. Typewriters. ZBROJOVKA BRNO NARODNI PODNIK. 11 Feb., 1970, [19 Feb., 1969], No. 6546/70. Addition to 1,228,692. Heading B6F.  End of page indicator.-In order that the typist is aware that the last or penultimate line has been reached before the line-count control device of parent Specification prevents further typing, coloured markings are provided on the surface of the cam 212 of the line counting device, which markings become visible in an aperture defined by an upper mask 400 and a lower mark 265. The lower mark 265 is attached to the brown line-width adjusting device 260 so that the distance between the masks is selected in accordance with the line width chosen. The upper mask 400 is mounted on an. arm 401 pivoted at 402 to the typewriter frame. In an alternative embodiment (Figs. 1, 2 and 5) the lower mask is dispensed with.
Patent GB-1378188-A (GB)
Title: High pressure mercury vapour discharge lamp
IPC: H01J61/82
Filed: 1972-02-11
Abstract: 1378188 Discharge lamps PATENT-TREUHAND GES FUR ELEKTRISCHE GLUHLAMPEN mbH 11 Feb 1972 [11 Feb 1971] 6575/72 Heading H1D A high pressure Ag discharge lamp with a wall loading of 8 to 20 w./cm<SP>2</SP>. comprises a discharge tube 1 within an outer envelope 13 the tube containing halides of at least three rare earth metals the total amount of r.e. metals being 0À3 to 1À2 mg./cm. of arc length. A fused SiO 2  tube 1 with reflecting ZrO 2  coatings 8, 9 of different area at each end and ThO 2  activated W electrodes 2, 3 is filled with A, Hg, Tm, Ho, Dy, HgI 2 , TlI and CsI; Er may also be included. The arc length is a multiple of the tube diameter. The lamp has a spectrum close to daylight and is used in TV studios, stadiums and exhibition halls.
Patent GB-251392-A (GB)
Title: Improvements in or relating to reducing or other valves
IPC: F16K31/126
Filed: 1925-03-11
Abstract: 251,392. British Arca Regulators, Ltd., and Lindsay, T. March 11, 1925. Addition to 232,304. Pressure - reducing valves ; closure members, dual.- A combined piston and lift valve member particularly suitable for use in connection with control apparatus of the kind described in Specification 116,074 has a pilot balancing valve and has the annular chamber between the piston and lift closures in communication with an annular balancing chamber. The Figure shows the application of the invention to a reducing valve actuated by a diaphragm under the control of apparatus described in the Specification referred to above. The lift valve closure 5 is formed on a hollow piston 4 of the same effective diameter as the valve seat and adapted to work in a liner 11 externally flanged to engage a second liner 2 provided with inlet ports 6 tapered at their upper extremities. The piston closure 10 is formed by a flange on the piston and is provided with passages 8 connecting the annular chamber 7 with the annular balancing chamber 9 bounded by the two liners and the hollow piston. The pilot valve 15, formed on the spindle 16, is housed in a ported recess 13 in the hollow piston and co-operates with a seat 12 on the piston, a spring 21 being arranged between an adjustable abutment 22 on the spindle and the back of the recessed part to prevent backlash. The spindle 16 is connected by a coupling 29 to a spindle 28 itself connected by nuts 38, 39 embedded in a block 40 to an actuating diaphragm 35. The diaphragm is backed by plates 36, 37 and is loaded by a spring 30 adjusted by a screw 32 engaging a bridge supported by pillars 51. Liquid is admitted to the actuating chamber from a conduit 45 through a spring loaded valve 46 provided with a cleaning pin 48, and exhausted through a passage 50 under the control of the regulating mechanism. Adjustable stops 42, 26 are fitted to the diaphragm and valve chambers respectively. If it is desired that the valve should close with an increase of pressure in the actuating chamber, the pillars are transferred from the holes 55 to the holes 5, 6, the coupling 29 connected to the end 16' of the spindle and the covers interchanged as described in Specification 218,370. The invention is also applicable to a hand actuated valve.
Patent GB-340176-A (GB)
Title: Improvements in and relating to machines for casting stereotype plates
IPC: B41D3/00
Filed: 1930-02-28
Abstract: 340,176. Winkler, C. Feb. 28, 1930. Stereotype, casting. - In stereotype casting- apparatus of the type in which the mould is adapted to be pressed against the outlet from the melting-pot, the driving-mechanism is provided with a reversing-gear under the control of the operator. The shaft a controlling the movements of the mould and the shaft b controlling the valve in the melting-pot are driven in known manner from the shaft c. The parts d, e of a clutch rotate with the motor shaft which is in line with the shaft c; the part f of the clutch is fixed to the shaft c and the part g is rotatable on the shaft and is connected thereto by reversing gearing. The sliding movements of the clutch parts d, e are controlled by a lever p pivoted at q and under the control of a spring r and stops t, u, v on a lever w. In normal use, the lever p is depressed until it is engaged by the stop t in which position the parts d, f of the clutch engage to rotate the shaft c forwardly. The rotation continues until a stop x on the shaft a engages a projection on the lever wand causes the stop t to release the lever p. The movement of the lever w is such that the lever p, under the influence of the spring r, engages. the stop u, in which position the clutch-parts are in neutral position. To reverse the rotation of the shaft, the lever w is moved until the lever p is allowed to engage the stop v when the parts e, g of the clutch engage. When the mould has been returned to original position, a second stop z on the shaft a engages a projection on the lever p and pushes it into position to be engaged by the stop u.
Patent GB-703495-A (GB)
Title: Improvements in or relating to infra-red gas analysers
Inventor: SMART JOHN
IPC: G01N21/37
Filed: 1951-03-21
Abstract: <PICT:0703495/III/1> In known infra-red gas analysing apparatus of the type wherein twin beams of radiation pass through two gas filled tubes B, the rays afterwards acting on the contents of two chambers C partitioned from one another by a thin metal diaphragm D which constitutes with a fixed perforated metal plate E, a condenser, the beams of radiation were periodically interrupted to facilitate amplification by a rotary switch 1.  According to the present invention the rotation of the same switch operates a number of rotary contacts 2-7 which rectify the amplifier output over contacts (2-5) and short circuit the indicating instrument or apply an additional voltage to it to damp it during that part of the cycle when the signal falls away.  Alternatively they may connect a resister across the meter.  It is stated that the number of switches may be reduced by making some of the functions common. Specification 697,114, [Group XL (b)], is referred to.
Patent GB-255770-A (GB)
Title: Improvements in filling bodies for heat-storage vessels, absorption towers and the like
IPC: B01J19/30
Filed: 1926-03-11
Abstract: 255,770. Pfõlzische Chamotte-und Thonwerke (Schiffer & Kircher), Akt.-Ges., and Strack, O. March 11, 1926. Liquids, treating with gases. -A filling body for absorption towers is formed approximately in the shape of an ellipsoid with passages a through it, the wall sections between the passages being equal. The cross section is bounded by a wavy line, the indentations b having a smaller radius than the projections c so that in the event of two of these bodies lying side by side, passages are left between them.
Patent GB-941181-A (GB)
Title: Improvements in liquid atomizers and an improved method of generating heat at variable rate through the combustion of liquid fuel
Inventor: CLEALL ALFRED FRANK
IPC: F23D11/34
Filed: 1959-02-27
Abstract: 941,181. Atomizing burners. BABCOCK & WILCOX Ltd. Feb. 23, 1960 [Feb. 27, 1959; Sept. 27, 1959], Nos. 6859/59 and 30001/59. Heading F4T. [Also in Divisions B1 and B2] In order to effect, or assist in effecting, atomization of oil from the head 10 of a burner fed with oil through passages 22, 24, a transducer 4 abuts the rear end of the burner barrel 8 and imparts vibrations of ultrasonic frequency to the head. A signal generator 2 coupled to the transducer is operated by a pressureoperated switch 28, so that when the oil feed pressure falls below a predetermined value the transducer is operated. Oil flows from the passage 24 to a whirl chamber and is emitted from a spray plate 14, Fig. 2. The outlet end of the barrel includes a velocity transformer 12 which increases the amplitude of the vibrations. The distance A, Figs. 1 and 2, is an exact multiple of one half the wavelength of the imparted vibrations, the distance B is one quarter of the wavelength and the dimension C is an odd multiple of one quarter of the wavelength. In Fig. 3 the atomizer body 42, to the rear end of which a transducer is secured, has a reduced part 44 and oil is tangentially fed to a cylindrical chamber 54 between the part 44 and a cylindrical wall 50 by a duct 64. Additional swirl is imparted by a spiral vane 55, and the oil leaves an annular outlet between a spring- plate 56 and the part 44, which latter part has slots 48 to improve the atomization. The body 42 and the wall 50 are of different materials having different acoustical impedances so that the tip of the part 44 is vibrated relative the spray plate. The distance D is an exact number of half-wavelengths of the applied vibrations, and the distance E is one quarter of the wavelength.
Patent GB-121690-A (GB)
Title: An Improved Disinfectant or Germicide for Tomatoes and other Plants.
Inventor: RASMUSSEN RASMUS
IPC: A01N65/42
Filed: 1918-04-23
Abstract: 121,690. Rasmussen, R. April 23, 1918. Insecticides.-Relates to an insecticide or disinfectant for the prevention and cure of stem rot or American canker upon tomatoes and other plants grown under glass and for the extermina. tion of red spider and wire worm, and consists in a mixture of two parts of bitter aloes with one part of alum and a quarter part of rock salt by weight. Proportions are stated for the dilution of the mixture according to use.
Patent GB-412896-A (GB)
Title: Improvements connected with liquid resistances
IPC: H01C11/00
Filed: 1934-03-05
Abstract: 412,896. Liquid resistances. COMPAGNIE GENERALE D'ELECTRO-CERAMIQUE, 16, Rue de la Baume, Paris. March 5, 1934, No. 6964. Convention date, March 7, 1933. [Class 37.] The turns 1, 1<1>, 1<11> of a helical ceramic tube for holding a resistance liquid are spaced from one another by blocks 3 of insulating material which may be integral with one or both of the turns separated. A layer of plastic or elastic material may be placed between a block and the adjacent turn.
Patent GB-586789-A (GB)
Title: Improvements in bearings for high speed shafts
IPC: F16C27/02
Filed: 1943-05-04
Abstract: 586,789. Bearings. NEWTON, E. P. (Turbo Engineering Corporation). May 4, 1943, No. 7064. [Class.l2 (i)] [Also in Group XXVI] In a nested series of concentric sleeves forming a bearing for a high-speed shaft, adjacent sleeves have spaced and contact portions, the former varying in clearance during running and receiving capillary oil films. The area of the spaced parts is greater than that of the contact parts which are out of radial alignment. The flexible shaft 2, Fig. 1, of a gas turbine driving a supercharger has axial grooves 36 for the passage of cooling air which is bled off at 11 between the Stages of the compressor. Some of the air passes to the bearing 4 and some to the air passages 22 in the turbine rotor 24 to provide cooling therefor. The compressor casing 6 carries a member 42, Fig. 2, having spherical engagement with a twopart housing 44, 46 having end-thrust faces 48, 50 engaging collars 52, 54 secured to the shaft. Bearing 4 and casing 6 have flanges 56, 58 which form a closed lubricant chamber with the coilars 52, 54. A sleeve 60 secured to the shaft engages members 62, 64 having radial flanges 66 which carry pins 68 having loose engagement with members 42, 44, 46 to prevent relative rotation. Members 62, 64 have pads 70 which support the nested sleeves 72, Fig. 4, provided with tapering clearance spaces 73 and engaging the pins 68. The spaces may be parallel and provided by pads on the sleeves, the pads being staggered and, in one form, obtained by knurling the sleeves as shown at 138, Fig. 9 ; uniform projection being secured by grinding. In alternative forms, the pads are obtained by plating or by etching away adjacent parts. Some of the sleeves may have pads on both faces, intermediate sleeves having cylindrical surfaces. U.S.A. Specifications 1,926,225, 2,216.731 and 2,283,176 are referred to.
Patent GB-1024620-A (GB)
Title: Improvements relating to metal polishing
IPC: C23F3/03
Filed: 1964-02-20
Abstract: A composition for brightening metals particularly Al and Al alloy comprises at least 50% by weight of phosphoric acid, 1-40% by volume nitric acid, minor amounts of urea and a non-cationic surfactant preferably 0.1-2% and 0.0001-0.1% by weight respectively, and small and large amounts respectively of Cu and Al phosphate.  The surfactant may be anionic e.g. alkyl aromatic sulphonates, aliphatic sulphates and sulphonates including amine and alkali metal, preferably sodium, salts, or nonionic e.g. compounds having an oxygenated side chain including higher fatty acid esters of the poly-oxyethylene alcohols and higher polyglycols and ethylene oxide-propylene oxide co-polymers. The composition may be made by adding HNO3 to the remaining components or by adding either acid to a salt of the other acid. Treatment of Al alloy is effected by dipping or spraying at 90  DEG C. for 2 minutes after which the alloy is washed in water and may then undergo further treatment.  The composition may be used in electropolishing processes when other materials e.g. H2SO4 may be added.
Patent GB-315203-A (GB)
Title: Improvements in gramophone and like sound boxes
IPC: G10K13/00
Filed: 1928-03-09
Abstract: 315,203. Parker, T. H. March 9, 1928. Magnetic instruments; diaphragms; earpieces; loud-speakers.-The space between the diaphragm and the rear wall of the sound box of a gramophone, earphone, loud-speaker unit, &c. is divided into one or more spiral chambers for conducting the vibrations set up by the diaphragm along a spiral path to the exit aperture. The chamber or chambers mav be formed by the insertion of one or more spiral springs, which may extend laterally into the outlet aperture, or by forming a spiral rib or ribs 2 on the back wall 1 of the sound box, as shown. The diaphragm may have corrugations adjacent the rib. The sound box has an internally screwed boss 4 to receive a ferrule for attachment to the tone-arm.