baber/WOPTO huggingface dataset:
Patent GB-596847-A (GB)
Title: Process for producing yeast extract and food preparations made from yeast
IPC: C12N1/06
Filed: 1944-03-02
Abstract: A yeast extract is prepared from compressed fresh baker's yeast containing about 75 per cent of water by mixing with 2-4 per cent of its wet weight of sodium chloride, heating to 57-67 DEG  C., maintaining at that temperature for at least 40 hours and then separating the resulting extract from the yeast cell residue and evaporating to a desired consistency.  The extract may be separated continuously by a centrifuge and the cell residue further centrifuged after adding wash water and if necessary heating by steam.  A peeling or sedimentation centrifugal machine may be used with discontinuous separation of the cell residue. Separation may be effected also by filtration either by forcing the liquid up through a filter of compressed cellulose, e.g. by means of a saturated solution of sodium chloride, or by a suction pipe containing the filter being lowered in the liquid.  The primary extract and all further extracts obtained by washing the cell residue are evaporated separately or together in open vessels at atmospheric pressure.  If evaporation takes place in vacuo, fat is added to reduce foaming.  The cell residue may be mixed with finely-divided vegetables e.g. mashed, boiled turnips after evaporating water, and mixing in lactic acid, lactic acid bacillus or Yoghurt-micro-organisms fermenting and, if desired, pasteurising. Beet juice, celery and small amounts of tomatoes may be added.  The cell residue can also be utilized by plasmolysing it with sugar or malt and, if desired, proteolytic enzymes.  Alternatively, the cell residue may be hydrolysed, e.g. with hydrochloric or sulphuric acid, and after neutralizing boiling the mixture with steam to assist the separation of the remaining cell walls from the mixture by centrifuging, sedimentation or filtering.  A suitable method is to hydrolyse one half of the cell residue with acid and treat the other half with sodium hydroxide or lime at 50-60 DEG  C. at such concentration that upon mixing the two portions a neutral mixture is obtained.  In an example, to 50 kg. of fresh baker's yeast in narrow glass cylinders is added a saturated solution of NaCl at 100 DEG  C. corresponding to 3 per cent NaCl on the total mixture and stirred, the temperature becoming 62 DEG  C. at which the mixture is maintained for 60 hours.  The mixture is raised to 90 DEG  C. by steam and centrifuged.  Hot water is added to the residue which is centrifuged.  The extract and washing water are mixed and first evaporated at atmospheric pressure in a rapidly revolving evaporator and then in a vacuum evaporator.  The cell residue is heated for about 24 hours with an amount of H2SO4 corresponding to 3 per cent of the mixture and then neutralized p  with chalk and lime, filtered or centrifuged and then evaporated separately or together with the primary extract.  1 per cent of fat is added in portions during vacuum evaporation when foaming is worst.
Patent GB-538918-A (GB)
Title: Door sealing means
IPC: E06B7/22
Filed: 1940-03-04
Abstract: 538,918. Draught excluders. GAY, J. H., and WELCH, J. March 4, 1940, No. 3988. [Class 20 (iii)] Draught-sealing means for doors comprises a thin -wedgesection strip of wood 7 covered with cloth 8, the edges 9 of which are secured under the door stop 6. The strip is also secured at intervals by wood screws 10, and a small spring 11 presses it outwards so that the free edge makes contact with the door 1 to form a seal. The strip may alternatively be of metal, fibre, cardboard or paper, or may be of moulded rubber, the wedge being reinforced with thin metal and the margin with canvas.
Patent GB-1157773-A (GB)
Title: Method of Controlling the Growth of Noxious Plants
Inventor: NELSON CHARLES DONALD
IPC: C07D241/46
Filed: 1968-01-25
Abstract: 1,157,773. Controlling algae/weeds with phenazine carboxylic acids. QUEEN'S UNIVERSITY AT KINGSTON. 25 Jan., 1968. No. 4041/68. Heading A5E. [Also in Division C2] A method of controlling the growth of algae and weeds comprises applying 1-phenazine carboxylic acid or hydroxy-phenazine-carboxylic acid to the growth environment in at. least 1/3 pound per acre.
Patent GB-607642-A (GB)
Title: Improvements in or relating to safety razors
IPC: B26B21/18
Filed: 1946-02-09
Abstract: 607,642. Safety razors. MARKHAM, H. Feb. 9, 1946, No. 4084. Drawings to Specification. [Class 30] In a safety razor, the distance between the guard and clamping plates and thus between the edges of the blade and the guard, is determined by the provision of one or more incompressible collars on the clamping stud and contacting with the inner surface of the clamping plate. The collars may extend through an opening in the blade so as to contact the guard as well as the clamping plate. If the guard is provided with blade locating ribs, the collars may have notches to accommodate the inner ends of the ribs.
Patent GB-816454-A (GB)
Title: Apparatus for determining the time integral of an electrical time-varying quantity
IPC: G06G7/22
Filed: 1957-02-06
Abstract: 816,454. Electric analogue calculating. BOFORS A.B. Feb. 6, 1957 [March 24, 1956], No. 4094/57. Class 37. Apparatus determining the time integral of a voltage signal, comprising an integrating device to whose input the signal is to be supplied, developing at its output a signal representing the integral of the voltage signal for application to a continuous permanent magnitude recording device; there being provided a voltage-sensitive zeroizing device supplied with the integrated signal which periodically sets the integrating device to zero when the signal reaches a predetermined value corresponding to the maximum value signal to which recording device is responsive. A timevariable electrical signal (Fig. 1, not shown) is applied to terminals 2, 3 (Fig. 3) to feed a squaring circuit 4 comprising (Fig. 4) parallel channels 13, 14 containing series resistances 15, 30 and groups of three shunt channels 16, 17, 18 ; 31, 32, 33 respectively grounding each series channel and each containing in series a diode, a resistance, and a biasing voltage source; the diodes being appropriately poled and biased and the resistances being so proportioned that the outputs at terminals 28, 29 represent the squared value of the input signal on positive and negative excursions (Figs. 2, 5, not shown). These outputs are connected in series with resistor 5 to electron tube amplifier 6, shunted from output to input by a capacitor 7 and normally open contacts 9, 10 operated by a relay shunted across the output, which is connected to a pen recorder 12. The input variable is squared at 4 and integrated by amplifier 6, resistor 5, and capacitor 6 to operate pen recorder 12 to describe on a continuously moving tape the curve of the integral 47 (Fig. 6). At a fixed voltage value of the output, relay 11 operates to short-circuit the integrator at 48 so that the integration curve restarts from zero at 49. The integration curve may be described by dissecting the tape and juxtaposing the sections so that line 47 is continuous, and its mean slope may be designated by a straight line 50 through two arbitrary time values to indicate the square of the mean value of the variable. The device may be responsive to, e.g., a time varying signal representing the output accelerations of a servo-system to determine the R.M.S. value of the deviations thereof from a mean value. Specification 799,984 is referred to.
Patent GB-470262-A (GB)
Title: Improvements in and relating to insulated fishplates
IPC: E01B11/54
Filed: 1936-02-11
Abstract: 470,262. Railway rail joints. WILLIAMS, L. WYNN-. Feb. 11, 1936, No. 4099. [Class 104 (ii)] In an insulated rail joint of the kind formed in separate halves 1, 2 each adapted to be bolted to one of the rail ends provided with a laterally extending portion 9 secured through the medium of an insulating layer 13 to the external portion 10 of the other half by means of a pair of fishbolts 11, 12, the fishbolts are arranged with the nut engaging portion 25 or 26 of one bolt projecting beyond or in staggered relation to the adjacent end of the other bolt so as to facilitate access to and adjustment of a nut by a standard spanner. The nuts 11a, 12a may be caused to project by thick washers 31, 32 or they may be made deeper than the adjacent heads of the bolts. The insulating layer may be divided by a middle slit 22, forming two main portions 19, 20 engaged between the adjacent pairs of lateral portions 9, 10 and a narrower portion 21, permitting limited resilient movement of the parts 19, 20, when the fishplates are being adjusted. Specification 470,324 is referred to.
Patent GB-370104-A (GB)
Title: Improvements in high potential dynamo-electric machines
IPC: H02K3/12
Filed: 1931-02-10
Abstract: 370,104. Conductors for dynamo-electric machines. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Feb. 10, 1931, No. 4132. Convention date, May 30, 1930. [Class 35.] A conductor having a circular periphery is composed of separate segment-shaped conductors a surrounding and insulated from a polygonal conducting core c, Fig. 3, and the conductor as a whole including the core is twisted. Adjacent conductors are separated by insulation b, d. The constructions shown in Figs. 1 and 2 are stated to be known arrangements.
Patent GB-114042-A (GB)
Title: Improvements in and relating to Medicinal Vaporizers or Fumigators.
IPC: A61M11/04
Filed: 1917-03-22
Abstract: 114,042. Marks, E. C. R., (Devilbiss Manufacturing Co.). March 22, 1917. Vaporizing by heat; vapours, delivering. -A medical vaporizer comprises a boiler 4 mounted in a casing 1 and heated by a spirit lamp 3. Suspended within the boiler is a container 10 which is open at the top to the outlet nozzle 9, is perforated at its base, and is formed with studs 16 co-operating with bayonet slots 17 to support an outer container 11 open only at the top. Steam from the boiler passes between the vessels 10, 11, through the contained liquid preparation, and up through the inner vessel 10 to the nozzle 9.
Patent GB-1166362-A (GB)
Title: Process for Electrolytic Reduction of Aromatic Nitro Compounds
IPC: C25B3/25
Filed: 1967-01-27
Abstract: 1,166,362. Electrolytic reduction of aromatic nitro compound; copper-zinc alloys. MILES LABORATORIES Inc. Jan.27, 1967 [Feb.2, 1966], No. 4199/67. Headings C7A and C7B. An aromatic nitro compound is electrolytically reduced, e.g. nitrobenzene to phenylhydroxylamine which rearranges to an acid salt of p-aminophenol, in the cathode compartment of a cell having aqueous anolyte and catholyte baths, e.g. of 1-10N H 2 SO 4  solution, separated by an ion-permeable resin membrane non-porous to water. The resin preferably comprises a copolymer of styrene and divinyl benzene containing ionizable sulphonic acid (cationic) or amine (anionic) groups, and is impregnated into an inert porous support made of fabric woven from fibres of vinyl chloride-acrylonitrile copolymer, glass, PVC and/or vinylidene chloride-vinyl acetate copolymer. The anode may be of Pb, Pt, or C; the cathode may be of Ti, Ag, Mo, or a known Ni-Cu, Ni-Mo-Cr or Ni-Fe-Cr alloy, or an alloy of 45-65% Cu, 10-18% Ni and 17-45% Zn. Specification 1,166,363 is referred to.
Patent GB-451674-A (GB)
Title: Improvements relating to beetling machines
IPC: D06C15/14
Filed: 1935-02-11
Abstract: 451,674. Finishing fabrics. WILLIAMSON, J. A., The Foundry, Portadown, Co. Armagh, Northern Ireland. Feb. 11, 1935, No. 4289. [Class 42 (i)] Beetling.-In a machine in which the hammers are lifted by wipers &c. and fall by gravity, a stop such as a strap 7 or a strap and spring 8 limit the rise of each hammer to that positively given to it by its wiper &c. The downward stroke is at the same time aided.
Patent GB-511153-A (GB)
Title: Novel or improved means for controlling the operation of brakes on aircraft
IPC: B64C25/44
Filed: 1938-02-11
Abstract: 511,153. Control mechanism for brakes. DUNLOP RUBBER CO., Ltd., BEHARRELL, G. E., WRIGHT, J., and TREVASKIS, H. Feb. 11, 1938, No. 4313. [Class 136 (i)] [Also in Groups XXIV and XXXIII] Means for controlling the operation of brakes on aircraft include a manually-operated pivoted lever provided with adjustable means adapted to co-act with a fixed stop for determining the angular movement of the lever, and a pivoted detent or catch for holding the lever at the limit of its angular movement. In the construction shown, a lever 1 is pivotally mounted on a pin 2 fixed to a ring handle 3 provided on a flying control column 4. The lever has two lugs, one having the brake cable 6 secured thereto, the other being apertured to receive a grub screw 5. The cable 6 passes through a sleeve 7 integral with the handle 3 and carrying a pin 9 on which a detent 8 is pivotally mounted. When the lever 1 is moved to tension the cable 6, the screw 5 contacts with a sleeve 7a on the pin 9. The lever is locked in position by means of the detent 8 which is moved so that the surface 10 is behind the rear end of the screw 5. The extent of movement of the lever 1 is determined by the position of the grub screw within the aperture in the lug 1a.
Patent GB-859169-A (GB)
Title: A photo-electric transistor counter
Inventor: SAW PETER DOREE
IPC: G06M1/10
Filed: 1957-02-08
Abstract: 859,169. Counting apparatus. TYER & CO. Ltd. Feb. 10,1958 [Feb. 8, 1957], No. 4362/57. Class 40(3). [Also in Group XIX] In a counter for recording, e.g. the number of articles moving along a conveyer belt, the light sensitive element is a photo-transistor and by means of a switch the device can record either light pulses or dark periods. In Fig. 1 the switch is positioned for recording light pulses, the photo-transistor TR passes current when illuminated, the relay R operates the switch a and the condenser Cl discharges through the pulse meter M, recording a count, additionally a negative pulse is applied at the base of the transistor thereby increasing its current and ensuring a count for short duration light pulses. For recording dark periods the switch S is thrown to the opposite position, the transistor is normally conducting, relay R is operated and switch a is in the opposite position to that shown. A dark period reduces the current through the transistor, relay R releases, switch a is switched to the position shown and condenser C charges via the pulse meter, thereby recording a count and producing a positive pulse at the base of the transistor which ensures a count for short duration dark periods. In a further arrangement, Fig. 4 (not shown), the photo-transistor forms half of a bi-stable flip flop circuit of variable sensitivity, the output of which is applied to a counter via a transistor amplifier. Specification 859,170 is referred to.
Patent GB-640076-A (GB)
Title: Improvements relating to refrigeration apparatus
IPC: F25B49/02
Filed: 1948-02-14
Abstract: 640,076. Rotary engines. GENERAL MOTORS CORPORATION. Feb. 14, 1948. No. 4373. Convention date, April 26. 1943. [Class 110(ii)] [Also in Groups XIII, XXIX and XXXV] A sealed motor-compressor unit in a casing 12 delivers compressed refrigerant gas and lubricant to a superheat removing coil 71 located outside the casing, the coil discharging by a pipe 78 into the casing 12 which forms a lubricant-separating and storage chamber from which the compressed refrigerant free of lubricant is discharged by a pipe 80 to the condenser 82 The coil is supported by a bracket 73 from one of the heat dissipating fins 75 on the casing. The motor stator 69 is mounted in the casing by a corrugated strip 70 that enables lubricant separated from the refrigerant to flow downwardly to the rotary compressor, which comprises a cylinder 20 between end plates 22, 24 and containing an impeller 26 operated by an eccentric 28 on the motor shaft 30. A divider block 32 is pressed into engagement with the impeller 26 by a spring 34 held in place by a spring retainer 36 the arms of which slidably engage slots 38 in the cylinder 20 and are retained therein by the upper end plate 24. Inlet and outlet ports 42, 44 in the lower end plate 22 on opposite sides of the divider block 32 have check valves 46, 52, the outlet check valve 52 being arranged in a recess 50 communicating by a passage 68 with the coil 71. The valve 52 comprises a casing with inturned ends forming abutments for the check valve plate 60 and the spring 58. and having slots 62 for the outlet of refrigerant. To charge the system with refrigerant and lubricant a charging plug 98 has two passages 99 which lead respectively to the high and low sides of the system.
Patent GB-1042901-A (GB)
Title: Production of 4-nitro-5-hydroxypyridazones-(6)
Inventor: REICHENEDER FRANZ
IPC: G03C1/54
Filed: 1964-02-03
Abstract: The invention comprises 4-nitro-5-hydroxypyridazones-(6) of the formula <FORM:1042901/C2/1> in which R denotes a hydrogen atom or a substituted or unsubstituted aliphatic, cycloaliphatic, araliphatic or aromatic radical or a sulphonyl radical of a substituted or unsubstituted alkyl or aryl sulphonic acid and R1 denotes a hydrogen atom, a halogen atom, an alkoxy radical or an aryl radical.  R may be further substituted, for example, by chlorine, bromine, hydroxy, nitro or alkoxy.  The above compounds are prepared by reacting a 4,5-dihalopyridazone of the formula <FORM:1042901/C2/2> (wherein X and Y denote halogen atoms) with a nitrite in a molar ratio of 1 to at least 3, optionally in the presence of a solvent and/or suspension agent.  Suitable nitrites are sodium, potassium, barium and potassium-mercury nitrites.  The preparation of ammonium, pyridinium and sodium salts of the above 4-nitro5-hydroxy-pyridazones-(6) is described.  4 - Amino - 5 - hydroxypyridazones - (6) are prepared by reduction of the above 4-nitro-5hydroxypyridazones-(6 with zinc and hydrochloric acid.  4 - Diazo - 5 - hydroxypyridazones - (6) are prepared by diazotization of the corresponding 4-amino-5-hydroxypyridazones-(6) with nitrous acid.  4 - Nitro - 5,6 - diacetoxypyridazine is prepared by acetylation of 4-nitro-5-hydroxypyridazone-(6) with a mixture of acetic anhydride and sulphuric acid.
Patent GB-106274-A (GB)
Title: Processes for Producing Phenols.
IPC: C07C37/50
Filed: 1917-03-27
Abstract: 106,274. Bostaph Engineering Co., (Assignees of Rnmage, A. S.). April 20, 1916, [Convention date]. Phenol and its homologues are obtained by treating the vapours of tar acids of high boiling-point (creosol &c.), such as are obtained in low temperature distillation of coal and boiling at 210-- 300‹ C., with hydrogen in the presence of a hydrogenating catalyst such as nickel, whereby methyl and methoxy groups are replaced by hydrogen. The preferred catalyst is nickel, reduced from its hydroxide at temperatures below 325‹ C. and distributed over long-fibred asbestos. The process may be carried out by atomizing the material treated from a tank 1 by an injector 3 supplied with hydrogen under pressure from a source 4; the mixture is sprayed into a series of tubes 6 heated by resistance-coils 7. The product passes to a condenser 9 which refluxes unconverted material back to the tank 1; the phenol, cresol, &c. pass to a condenser 12 and receptacle 13. The hydrogen led off is suitably purified and returned to the source.
Patent GB-574054-A (GB)
Title: Improvements in and relating to condensation products containing rubber
IPC: C08G8/28
Filed: 1942-04-03
Abstract: Oxidised rubber prepared as described in Specifications 417,912, [Group V], 426,613, [Group I], and 462,627, [Group V] and referred to as "Rubbone" is condensed with a phenol and an aldehyde in the presence of an alkaline aliphatic diamine having a chain length of not more than 3 carbon atoms to give a resinous syrup which may be used for impregnating paper used in the production of laminated boards.  300 gs. Rubbone, 100 ml. phenol hydrate and 25 ml. ethylene diamine were heated under reflux until the mixture gelled, whereupon 980 ml. phenol hydrate were added and heating continued until the Rubbone had completely dissolved. 1000 ml. 40 per cent formalin were then added and the mixture refluxed for 15 mins. and cooled, whereupon the lower resinous layer was separated, a dark brown liquid being obtained.  The phenol may be replaced by cresols and the formalin by benzaldehyde or acetaldehyde.  Specifications 507,995 and 538,992, [Group III], also are referred to.
Patent GB-354705-A (GB)
Title: Improvements relating to sleeve-valve engines
IPC: F01L7/02
Filed: 1930-02-10
Abstract: 354,705. Force-feed lubricating. MARITI, R., 35, Corso Garibaldi, Lucca, Italy. Feb. 10, 1930, No. 4488. Convention date, Feb. 8, 1929. Void [Published under Sect. 91 of the Acts]. [Class 12 (iii).] In an internal-combustion engine the driving gear 11 of a rotary sleeve valve 2 acts as a lubricating pump, which maintains a circulation of oil from the crank case, and also lubricates the valve through ducts in the cylinder head.
Patent GB-745986-A (GB)
Title: Feeding mechanism for sewing machines
IPC: D05B27/14
Filed: 1954-02-16
Abstract: 745,986. Sewing-machines. SINGER MANUFACTURING CO. Feb. 16, 1954 [March 4, 1953], No. 4536/54. Class 112. Working feeding means in a sewing-machine comprise a feed-roller 32 fixed to a shaft 60, a rocker 61 in which are journalled shaft 60 and a driving-shaft 47, the axes of the shafts being parallel to one another, a rotary driving- element 66 fixed to shaft 47 and co-operating with a rotary driven-element 67 fixed to shaft 60, and means for oscillating the feed-roller and driven-element about the axis of the driving- shaft, in timed relation to the rotation of the latter, for modifying the effective rotation of the feed-roller about its axis, said means including an actuating-shaft 20 carrying an actuating-element connected to the rocker. Shaft 47 is driven from a main driving-shaft 13 via a double worm reduction gearing comprising gears 50, 51, 59. The rocker is oscillated from shaft 20 via an eccentric 65 and a pitman 62. The arrangement is such that when the rocker moves in the direction of rotation of shaft 47, indicated by an arrow B, the periphery of the feed-roller is stationary relative to the work, although the feed-roller continues to rotate about its axis in the direction indicated by an arrow C; and when the rocker moves in the opposite direction, the feed-roller operates to move the work in the direction indicated by an arrow D. As shown, the feed-roller is timed to perform its feeding stroke simultaneously with the feeding stroke of a four-motion feeddog 24, by means of adjustment of the eccentric 65. In a sewing-machine of the needle-feed type, the feeding would be timed to coincide with the feeding stroke of the needle while it is in the work. The feed-dog 24 is adjustably attached to a feed-bar 23 pivoted at 22 to a rocker 21 fixed to shaft 20. The latter is oscillated from shaft 13 via an eccentric and pitman, whereby feed-advance movement is imparted to the feed-dog. An arm 31, integral with the feed-bar, is connected by a link 30 to a crank 29 fixed to a shaft 28, the latter being oscillated from shaft 13 via an eccentric and pitman, whereby feed-lift movement is imparted to the feed-dog. It is stated that the feedroller may alternatively be oscillated by direct connection with the feed-bar 23, the feedrocker 21 or the feed-dog 24; or by any suitable crank means or other source of oscillation derived from the feed-shaft 20. Work holding.-Co-operating with the feedroller is a presser-wheel 33 journalled in a yoke 34 carried by a presser-bar 35 slidably mounted in a bracket 37 fixed to the head of the machine. The presser-bar is biased downwardly by a coil spring 39, one end of which abuts a collar 40 fixed to the presser-bar and the other end of which abuts an adjustable bearing 41. A pin 42 carried by collar 40 enters a slot 43 in bracket 37 to prevent rotation of the presser bar. A handle 44, pivoted to bracket 37, carries a cam 45 which co-operates with a laterally extending lug 46 on collar 40 for raising the presser bar.