baber/WOPTO huggingface dataset:
Patent GB-652220-A (GB)
Title: Improvements in or relating to folding push chairs
IPC: B62B7/06
Filed: 1948-04-20
Abstract: 652,220. Folding push chairs. THOMAS, L., and THOMAS, R. D. [Representatives of THOMAS, G.]. April 20, 1948, No. 20592/50. Divided out of 652,176. '[Class 108(i)] A folding push chair in which each wheel is carried by a bracket capable of pivoting about a vertical axis so that in the folded condition the wheels are disposed in parallel transverse planes, as described in Specification 177,959, [Class 108(i)] is provided with a foot rest so arranged that as the wheels move to the open position the axle brackets are positively engaged by the rest to hold them in position when the chair is in use. As shown the wheels 5 are carried by brackets with vertical and horizontal limbs 6, 7, respectively, and the foot rest 18 is mounted at the front of a member 19 pivotally mounted on the chair frame at 20, and extending rearwardly between the back wheels. The member 19 carries downwardly and upwardly facing hook-shaped members 21 which engage the horizontal limbs 7 of the wheel brackets as the wheels are opened out and the rest 18 swung down. Specification 652,176 also is referred to.
Patent GB-489204-A (GB)
Title: Improvements in or relating to signalling arrangements in telephone and the like systems
IPC: H04M7/16
Filed: 1937-07-27
Abstract: 489,204. Transmission systems. STANDARD TELEPHONES & CABLES, Ltd. (Western Electric Co., Inc.) July 27, 1937, No. 20757. [Class 40 (iv)] [Also in Group XL] In a telephone transmission system, ringing currents are separated from the speech currents bv means of a shunt circuit which includes a resistance element of a substance having a large negative temperature coefficient, such as silver sulphide. The resistance of the element drops to a low value at a critical temperature to which it is heated by ringing current, which is of high voltage compared with speech. When the ringing frequency lies within the speech range, the shunt circuit is tuned to that frequency. Fig. 1 shows one end of a line L which provides one low frequency and one carrier frequency channel separated by filters 10, 34, the terminal apparatus for the carrier channel being of the type disclosed in Specification 427,605. The two channels terminate in jacks 11, 31 with which are associated drop indicators 51, 50, and the carrier channel jack 31 is shunted by a silver sulphide resistance 54 in series with the primary of a transformer 55. When the jack 11 is plugged into, the ringing current (e.g. 20 cycles) flows over the low frequency channel and operates an indicator similar to 51 at the far end. When the jack 31 is plugged into, however, the ringing current, which is of considerable voltage, passes through the shunt resistance 54 and transformer 55, and flows in simplex fashion over the low frequency channel to the far end, where it operates an indicator similar to 50 through a transformer similar to 55. Figs. 3, 4 show arrangements applicable to the system disclosed in Specification 318,569, [Class 40 (iv)], for receiving ringing currents of a frequency within the speech range by means of a shunt circuit tuned to that frequency and including a transformer 10. In Fig. 3, the silver sulphide resistance 12 and tuning condenser 11 are in series with the primary, while in Fig. 4 they are in series with the secondary. The resistance element is preferably such that its temperature due to ringing current does not reach the critical value until an appreciable interval has elapsed.
Patent GB-856434-A (GB)
Title: Method for polymerizing propylene, butadiene, isoprene and chloroprene
IPC: C08F136/04
Filed: 1957-07-01
Abstract: Propylene, butadiene, isoprene or chloroprene may be polymerized using as catalyst an organotitanium compound RnTiX(4-n) wherein R is alkyl, alkaryl, aryl or aralkyl, X is alkoxy or halogen and n is 1 or 2, which catalyst may be produced by reaction of 1 to 2 mols of a metal alkyl or aryl or of a Grignard reagent with 1 mol of an alkyl titanate, a titanium tetrahalide) or an alkoxy titanium halide; the reaction mixture being used as such or the catalyst being separated and stored for subsequent use.  Hydrocarbon solvents may be present. In examples the catalysts are obtained as specified; (1) Me2TiCl2 from TiCl4 + MeMgBr + ether, (2) PrTi(OBu)3 from Ti(OBu)4 + PrMgCl, (3) PhTi(OPr)3 from Ti (OBu)4 + PhMgBr + ether, (4) and (5) Ph2Ti (OBu)2 from Ti(OBu)4 + PhMgBr.
Patent GB-666356-A (GB)
Title: Improvements in or relating to rotary press cylinders carrying engraved sheets
IPC: B41F27/12
Filed: 1949-08-10
Abstract: 666,356. Printing- surfaces. GRUNBERG, T., BELTRAMI, E., and MITCHELL'S IMPORT SOC. DE R. L. Aug. 10, 1949, No. 20809/49. Class 100 (ii). Means for attaching an engraved sheet 19 to the cylinder 2 of a rotary or flatbed printing press comprises a longitudinal slot 3 in the cylinder to receive the bent-over ends 20, 21 of the sheet, one side wall of the slot being rabbeted and the opposite side wall dovetailed, and a pair of complementary clamping wedges 4, 5 fitting into the slot. The wedges 4, 5 are respectively L-shaped and trapezoidal, and after insertion of the wedge 4, the wedge 5 is inserted endwise to clamp the sheet between the cylinder and the wedge 4. The wedges 4, 5 are tapered respectively forwards and backwards to complement each other.
Patent GB-1069774-A (GB)
Title: Process for producing fructose by fermentation
IPC: C12P19/02
Filed: 1964-05-20
Abstract: Fructose is produced by inoculating and culturing a fructose-producing microorganism belonging to the genus Pseudomonas or the species Bacillus megaterium or Bacillus fructosus, in an aqueous medium which contains sorbitol as a carbon source together with a suitable nitrogen source, other inorganic salts and, if necessary, a heavy metal fermentation promoter, and to which calcium carbonate has been added, and isolating and recovering the fructose from the medium.  Suitable nitrogen sources are, for example, yeast extract, meat extract, casein hydrolysate, corn steep liquor, amino acids, nitrates, ammonium salts or urea, and suitable inorganic salts are, for example, potassium phosphate and magnesium sulphate. Manganese, copper or zinc may be used as a fermentation promoter. The pH of the medium is adjusted to 6-8, calcium carbonate is added and the microorganism is inoculated and cultured in the medium.
Patent GB-441483-A (GB)
Title: Method of impregnating fillers and fibrous materials with resins of the amino-aldehyde series
IPC: C08L61/22
Filed: 1934-07-16
Abstract: Moulding material is prepared by impregnating a filler or fibrous material with a solution of a hardenable aromatic amine-aldehyde resin, which resin after its formation has been further treated by heating in solution to increase its viscosity. If desired, the further treatment may be effected after impregnation of the filler. In an example a resin prepared by condensing aniline and formaldehyde in the presence of phthalic acid and tin tetrachloride is heated in solution in a benzene-alcohol mixture before or after using it to impregnate a filler.  Specifications 388,030, [Group XXXIX], and 395,507 are referred to.
Patent GB-154324-A (GB)
Title: Improvements in or relating to apparatus for marking parts prior to drilling
IPC: B25H7/04
Filed: 1919-08-25
Abstract: 154,324. Hindley, H. D., and Hindley, L. A. Aug. 25, 1919. Tools for setting-out work.-In a marking-device for marking parts prior to drilling, comprising a workbed above which is supported a series of spring-controlled punches, the punches are mounted so as to be relatively adjustable for spacing, and so as to have independent lateral adjustment. A device for marking straight strips of metal to be formed into horseshoes is shown in Figs. 2 and 5. A work-bed A has a raised guide A<1> formed with a channel of inverted T shape in which are guided the tenons C' of shoes C having transverse slots for keys B<3> on the feet of punches B slotted at B<4> and carrying spring- controlled plungers B'. T-headod bolts D passing through the shoes C and the slots B<4> secure the punches in their adjusted positions. On the work-bed A is centrally mounted a split socket G internally threaded to receive a bush F engaging a screwed spindle E provided with an operating- handle E<2> which is given an advantageous operating-position by adjustment of the bush F by a handle F'. The strip of metal to be marked is placed against an adjustable stop H<1> and is gripped between the end E' of the spindle E and an abutment K, in place of which wedge-shaped projections C<2> on the two end shoes may be used. A hollow cap may be used to facilitate striking the plungers.
Patent GB-149223-A (GB)
Title: Process and apparatus for regulating the mixture of gases and the like
IPC: B01F23/10
Filed: 1920-07-12
Abstract: 149,223. Ihlenfeldt, R., and Scheib, G. Nov. 23, 1918, [Convention date]. Mixing fluids in flow.-Relates to a process for regulating automatically the relative proportions of gases in a mixture and consists in effecting the regulation by the difference of pressure between two portions of an auxiliary stream of gas, the difference being produced by the absorption of one of the portions. The absorbing-vessel, shown in sectional elevation in Fig. 1, consists of a cylindrical upper part c, d containing a regulating-piston l, and an enlarged lower part a, b, which contains the absorbing-liquid e. Gas is admitted to the vessel on opposite sides of the piston by inlet pipes u, f, the pipe f terminating in a perforated spiral h submerged in the liquid e. If gas is absorbed, the lowering of the pressure on the underside of the piston causes it to move downwards against the pressure of a spring m, and a plate r carried by the piston-rod p completes the circuit between two terminals s, t which are connected to any suitable electrically-operated device for regulating the main stream of gas. A decrease in absorption then causes the piston to rise and break the circuit. The stream of gas passing through the vessel is withdrawn from the mixing space by means of a pump and passed through a liquid baffle which cleanses the gas and divides the stream into two portions. The baffle, shown in Figs. 4 and 5, consists of a vessel 1 containing liquid 2 and provided with a vertical partition wall 3. The inlet pipe 4 has two branches 5, 6 which lead to opposite sides of the partition. The outlet pipes 7, 8 are connected with the pipes u, f, Fig. 1, respectively, A similar baffle without a partition is connected with the outlets v, g of the absorption vessel. The process may be used to regulate the proportions of air and gas in a combustible mixture either by means of the carbon monoxide and oxygen content of the mixture or by means of the carbon dioxide content of the products of combustion. Two absorption vessels would be used to operate at a permitted maximum and minimum of content. Another application of the process is in the recovery of nitrogen from atmospheric air by means of copper and copper oxide. The movement of the piston may operate a recording indicator and an alarm device.
Patent GB-1179731-A (GB)
Title: Electron Tube having an improved Directly-Heated Cathode Structure
Inventor: GERLACH PIERRE
IPC: H01J1/18
Filed: 1967-05-05
Abstract: 1,179,731. Cathode constrictions. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 5 May, 1967 [18 May, 1966], No. 21096/67. Heading H1D. An electron tube includes a tubular directly heated cathode 1 supported at one end by a transverse plate 2 reduced in thickness adjacent its periphery. A tubular mesh cathode consisting of two helically coiled thoriated tungsten wires joined at their cross-over points, is attached to upper and lower tapered Mo discs 2, 3 supported by Mo connector rods 4, 5. The discs may be flat on one side from which a rim projects, or may be made from a plurality of circular plates of lessening diameter; perforations may be punched in the discs. A dished Ta disc may have a frusto-conical part to reflect heat from the cathode centre to the cathode end.
Patent GB-687556-A (GB)
Title: Salts of riboflavin phosphate and the manufacture thereof
IPC: C07F9/6561
Filed: 1951-09-07
Abstract: The invention comprises morpholine and ethanolamine salts of riboflavin-51-phosphate and their production from aqueous mixtures of isomeric riboflavin phosphates by reacting said mixtures with morpholine or diethanolamine and separating the resulting corresponding amine salt of riboflavin-51-phosphate from the corresponding amine-salts of its isomers by fractional crystallization.  The pH of the mixture of amine salts obtained as a result of the reaction is adjusted between 4 and 10, and fractional crystallization effected by adding a water-miscible solvent, e.g. ethanol, acetone or isopropanol.
Patent GB-998520-A (GB)
Title: Fuel compositions and fuel additive compositions
IPC: C10L1/20
Filed: 1963-05-27
Abstract: A fuel composition for use in I.C. engines comprises (a) a major proportion of a hydrocarbon mixture boiling in the gasoline boiling range, (b) organo-lead antiknock agent, (c) a bromohydrocarbon scavenger in an amount providing 0.9-1.1 gram atoms of bromine per gram atom of lead, and (d) a trihydrocarbyl phosphate or phosphite in an amount such that the bromine to phosphorus gram atom ratio is in the range 1.5 : 1 to 6.5 : 1, the composition being free of chlorohydrocarbon scavenger.  Typical of these additives are: (b) tetra-methyl, ethyl, propyl, butyl, or amyl-lead; (c) ethylene dibromide, acetylene tetrabromide, 1,4-dibromobutane, dibromobenzene and dibromotoluene; and (d) tricresyl phosphate, 2,6-xylenyl di-(n-butyl) - phosphate, S,S-di-(2,6-xylenyl)-O-(n-butyl) dithiophosphate, O - a  - methylbenzyl-O,S - diisopropyl thionophosphate, and an exhaustive list of similar phosphates and phosphites.  The hydrocarbon mixture (a) may contain aromatic, olefine, paraffinic and naphthenic hydrocarbons and may be derived from any of the conventional refinery processes, typical being a mixture of catalytic reformate, catalytic cracked gasoline, straight run gasoline and butane.  Specifications 624,425 and 708,006 are referred to.
Patent GB-836337-A (GB)
Title: Improvements relating to gas meters
IPC: F04B35/04
Filed: 1958-07-02
Abstract: 836,337. Diaphragm compressors ; bellows. MARTENS, F. July 2, 1958 [July 3, 1957], No. 21199/58. Class 8(1). [Also in Group XXIX] Gas is forced from the inlet 1, Fig. 1, to the outlet 2 of a meter by a double acting bellows having a partition plate 11 oscillated by the armature 12 of an electro-magnet 13, 14 ; the chambers 3, 4 on opposite sides of the partition serving as suction and discharge chambers alternately and each having suction valves 5, 6 and delivery valves 7, 8 which latter open into a control chamber 15 in open communication to the meter outlet 2. The control chamber 15 comprises a bellows 16 having a weighted cover 17 provided with pins 19, 20 which when the bellows is collapsed e.g., when the demand exceeds the pumping capacity hold the valves 7, 8 closed. The bellows top 17 when in either of its extreme positions breaks a 3-pole switch 24, Fig. 2, in the magnets circuit which also includes a switch 25 actuated by lugs 26, 27 on the armature 12. The pump includes a stroke number registering device. In a modification the pumping element comprises a double-acting diaphragm 11, Fig. 3, reciprocated by an electric motor 35 through gearing 34 and a crank drive 33. The delivery valves 7, 8 open into a chamber 30 which in turn is connected to the control chamber 15 by a normally open aperture 32 in the base of the control bellows 16 the head of which has a saddle pin 19 which when the bellows is collapsed closes the aperture 32. The motor circuit switch 24 is as shown in Fig. 2.
Patent GB-930508-A (GB)
Title: Improvements relating to sealing devices
IPC: A45C13/10
Filed: 1960-06-16
Abstract: 930,508. Seals and sealing. F. H. ARTHUR. June 15, 1961 [June 16, 1960], No. 21219/60. Class 146 (2). [Also in Group XXV] A sealing device for a zip or toggle fastener comprises a housing 2 attached or adapted to be attached on or adjacent a fixed part 3 of a fastener and containing a resilient locking member 8 beneath an opening in the housing and a sealing element 9 adapted to be pressed over a movable part 1 of the fastener to cause a tab 9a on the sealing element to interlock with the resilient locking member to prevent movement of the movable part in an unfastening direction, the housing and the sealing element being thereafter immovable one from the other without permanently or visibly damaging one of the elements. The housing 2 in Figs. 1 and 2 is provided on its top flat surface with a pair of arcuate slots 2a, which register with corresponding arcuate slots 1a of the slider or movable part 1, the arcuate slots co-operating with similarly arcuate tabs 9a of the sealing element 9 and the seal is completed by the ends 8a of the resilient locking member entering a pair of transverse slots 9b in the tabs. The sealing element cannot be withdrawn from the housing without rupturing of the tabs 9a of the sealing element, which may be constructed of a soft or ductile material. The device may be unsealed by sharply lifting the sliding handle 1 or by levering upwards the free end of the latter by a special tool provided. Re-sealing is effected by a new second element, stocks of which would be carried by authorized persons. In another embodiment the sealing device is used on a toggle fastener (Fig. 6), comprising a bracket 10 on which a toggle lever 11 is pivotally mounted and carrying a locking finger 12 which engages a grooved catch piece 13 in the closed position. The toggle lever is formed with a pair of slots 11a, which in the closed position are in register with two slots 10a (not shown) and a sealing element 9 having straight tabs is inserted into the straight slots of the toggle lever and bracket 11 and 10, respectively, the manner of sealing and seal removal being identical.
Patent GB-842171-A (GB)
Title: Improvements in or relating to speed-responsive clutches
IPC: F16D43/30
Filed: 1957-07-04
Abstract: 842,171. Friction clutches. FICHTEL & SACHS A.G. July 4, 1957 [July 7, 1956], No. 21254/57. Class 80 (2). A centrifugal friction clutch for motor vehicles comprises centrifugal masses 3, 4 mounted on a floating carrier 5 which is connected to the driving member 1 by a spring- loaded friction slip coupling, e.g. 11, Fig. 1, which limits the maximum acceleration of the carrier and thus limits the rate of frictional engagement of the masses 3, 4 with driving and driven members 1, 2. The masses 3, 4 are retracted by springs 6, 7 and are guided by pins 8, 9. In Fig. 2 (not shown), the separate slip coupling 11 is omitted, and the masses 3 are permanently spring-pressed into engagement with the driving member 1 to act as a slip coupling at low speeds. In Fig. 3, a centrifugal mass 24 is pivoted on a presser plate 22 and connected to a presser plate 21 by a tie-rod 25, the presser plates being urged apart by a spring 26. The driving member 18 drives the plate 21 and weight assembly through a slip coupling 27 ... 29 which limits the maximum acceleration of the assembly. On being driven the mass 24 pivots outward drawing together the presser plates which in turn force the driven member 19, which is splined or keyed to the output shaft, towards the driving member 18 coupling them together through a friction member 20. The friction member 20 may be replaced by a ball or roller thrust bearing, the drive being transmitted through the presser plates 21, 22. The maximum acceleration limit may be adjusted by having unequal masses 3, 4 and/or different friction facings thereon, or in Fig. 3, by having different friction facings on the members 18, 19. The driven member may also be frictionally coupled to the carrier, the frictional adhesion being less than that of the slip coupling.
Patent GB-221803-A (GB)
Title: Improved construction of surfaces or parts of aeroplanes or the like
IPC: B64C3/26
Filed: 1924-09-09
Abstract: 221,803. Soc. Anon. des Avions M. Wibault, (Assignees of Wibault, M. H. M. J.). Sept. 10, 1923, [Convention date]. Planes and the like, construction of; fuselages and nacelles.-The sheet- .metal surface-covering of planes, fuselages, &c. is formed with channels in which are secured the edges of the girder elements. The invention is described as applied to wings, the upper and lower surface coverings of which are formed at intervals with channels a', b<1>, Fig. 1, embracing the edges of the sheetmetal ribs c, rivets c' passing through the walls of the channels and the rib edges. Preferably the channels extend in the direction of flight. The ribs c instead of being continuous may be comprised of upper and lower boom strips. These strips may be of different sections, the upper strips c<2>, Fig. 3, for example, being of T-section and the lower strips c<3> of angle-section. The Specification as open to inspection under Sect. 91 (3) (a) also describes modifications in which the surface-covering consists of separate panels secured between the ribs, the edges of the adjacent panels being folded over one another and secured to the ribs, as shown in Fig 5 (Cancelled) or Fig. 6 (Cancelled). This subject-matter does not appear in the Specification as accepted.
Patent GB-918324-A (GB)
Title: Gas cookers
IPC: F24C3/08
Filed: 1961-06-13
Abstract: 918,324. Cooker tops and burners. EPPENDAHL, P. C. June 13, 1961 [Jan. 12, 1961], No. 21329/61. Class 126. [Also in Group XXII] A gas cooker burner comprises a head containing one or more flame apertures 3 and a laterally-extending air and gas delivery duct 6, the head and delivery duct being formed of two pressed metal elements, the uppermost forming part of the cooker body and the lower being united to it by welding along flat abutting surfaces. The flame apertures 3 are formed in a domed portion 2 of the upper element which corresponds to a raised cylindrical portion 4 of the lower element. The portion 4 is surrounded by an annular cavity 5 diminishing in depth away from the delivery duct 6, the latter being straight and having a minimum cross-sectional area at 7. Gas is injected at the end of the duct remote from the burner head, Fig. 5 (not shown). A flange 8 extends round the annular cavity and delivery duct on the lower element and is welded to the upper element.