baber/WOPTO huggingface dataset:
Patent GB-496661-A (GB)
Title: Improvements in or relating to the production of butyl alcohol and associated products by fermentation
IPC: C12P7/28
Filed: 1937-06-03
Abstract: Corn meal, sugar, e.g. molasses or hydrol, or other carbohydrate mashes are fermented to produce butyl alcohol, acetone and ethyl alcohol by an organism named Clostridium granulobacter acetobutylicum.  Its characteristics are specified, among them being that for high solvent production in mashes having a sugar concentration of about 7 per cent, vegetable protein nitrogen (other than corn meal) is necessary as well as inorganic nitrogen, and that it does not liquefy gelatine or ferment glycerol.  The optimum temperature for fermentation is 28 to 33 DEG  C. and the optimum initial pH is 6,0 to 6,8.  A culture may be prepared by heat-shocking from sugar corn ear by cultivating at 30 DEG  C. for 72 hrs. in a 10 per cent molasses medium containing calcium carbonate and ammonium chloride, pouring the culture into further hot fresh medium of the same composition and cooling rapidly.  After 24 hours, the culture was plated on to nutrient agar containing 2 per cent sucrose and incubated at 30 DEG  C. for 48 hours.  Colonies were then incubated at 30 DEG  C. for four days to ensure sporulation, the spores being capable of being stored for several months in a refrigerator.  The final inoculum may be prepared by heat-shocking into a molasses mash and further p  culture.  The vegetable protein used as a nitrogen source may be corn gluten feed, corn germ oil meal, corn gluten meal, or steep water.  The relative proportion of solvents produced is 60 to 75 per cent butyl alcohol, 25 to 30 per cent acetone and 1 to 10 per cent ethyl alcohol.
Patent GB-830589-A (GB)
Title: Improvements in or relating to composite brushes for electrical machines
IPC: H01R39/24
Filed: 1958-05-14
Abstract: 830,589. Brushes for dynamo-electric machines. SOC. LE CARBONE-LORRAINE. May 14, 1958 [May 14, 1957], No. 15494/58. Class 35. The parts of a composite brush are resiliently secured together by at least one flexible member embedded in a slot running across the sections near the top end of the brush. In the form shown, in plan view, the part brushes a1, a2, a3 are secured together by flexible members t1, t2 lying .in slots f1, f2 in the top surface of the brush. The flexible members consist of an oversize flexible tube, e.g. of plastic or rubber, reinforced by a rod of metal wire or plastic. The tubes may be secured in the slots by adhesive or cement or by using slots with narrow opening, and the tubes may be inserted under tension. In a modification the slots are let into the sides of the brush.
Patent GB-272537-A (GB)
Title: Improvements in and relating to electric ignition systems
IPC: H01F38/08
Filed: 1927-06-10
Abstract: 272,537. British Thomson-Houston Co., Ltd., (Assignees of Wagner, E. A.). June 14, 1926, [Convention date]. Transformers.-In an electric ignition system for vapour burners &c., current is supplied to the spark gap electrodes 1 through a transformer 2 provided with magnetic shunts 7 between the primary and secondary windings to reduce the effect on the primary winding of flux produced by high frequency oscillations in the spark gap circuit, thereby relieving the supply mains 3 of oscillations likely to interfere with wireless apparatus. Short air gaps 8 are provided in the shunt paths to afford the desired reluctance. As a further precaution against high frequency disturbances reaching the supply mains, chokes 9 and condensers 10 may be arranged as shown. Specification 258,287 is referred to.
Patent GB-112421-A (GB)
Title: Improvements in Air Supply Fittings for Oil-burning Metal-heating Furnaces.
Inventor: BORENER ALBERT JACOB
IPC: F27D99/00
Filed: 1917-10-26
Abstract: 112,421. Borener, A. J. Dec. 30, 1916, [Convention date]. Safety cut-off valves.-Relates to valves forming part of the air-supply fittings of a rivet-heating and other metal-heating furnace heated by oil fuel. The air-supply pipe rises from the floor of the workshop and extends in the form of a gooseneck 5 to a point above the burner, which extends vertically from the pipe 17 as shown in Fig. 3. The bend 5 of the pipe is fitted with a flap 12, which, when the air blast is shut off, hangs vertically as shown in doted lines, the lever 38 hanging in the position shown; the pressure of the air lifts the flap and the momentum of the lever 38, which is pivoted on the lug 39, causes the hook to engage with the lug 40. If this mechanism fails the flap 12 can be secured in its closed position by a pin 42 in lugs 13 on the flap and the pipe. The air supply in the termination 15 of the bend 5 is regulated by an approximately semi-cylindrical valve 9 operatecl by a handle 10. The valve has a curved inner surface 29 to prevent the formation of eddies in the current of air, which passes by a passage 16 to the combustion chamber and by a pipe 18 to the burner 23.
Patent GB-1492991-A (GB)
Title: Interdigital surface acoustic wave transducers
IPC: H03H3/08
Filed: 1975-05-19
Abstract: 1492991 Etching DEFENCE SECRETARY OF STATE FOR 19 May 1975 [9 April 1974] 15762/74 Heading B6J A method of etching away parts of the fingers 9, 10, Fig. 2, of an interdigital metal transducer 6 comprising two comb members 7, 8 comprises covering the transducer with a photoresist layer 11, Fig. 3, cutting out of the resist an area 13 including areas of the fingers 9 to be etched, and a window 12 over an area of the comb 7, painting over the window with a material 14 electro-chemically dissimilar from the material of the transducer, and immersing the assembly in an etchant, wherein the electrochemical current flowing between the paint 14 and the exposed areas of the fingers 9 causes the said areas to be etched away while the corresponding areas of the fingers 10 are not removed. The transducer may be of aluminium, the paint silver and the etchant potassium hydroxide; or the transducer chromium, the paint aluminium and the etchant eerie sulphate and sulphuric acid. 'In the latter case it is the fingers not connected to the aluminium which are etched.
Patent GB-129354-A (GB)
Title: Improved Process of Reducing Iron Ores.
Inventor: JAKOVA-MERTURI GASPARD
IPC: C21B13/02
Filed: 1917-10-29
Abstract: 129,354. Merturi, G. Jakova-. Nov. 2, 1916, [Convention date]. Extracting.-Metallic or pure iron, cast iron, or steel is produced in a blast furnace by using therein a charge of ore and flux, without fuel, and introducing a mixture of poor gas and rich gas to which hydrogen may be added. The poor gas is stated to contain 90 per cent of carbon monoxide and 10 per cent of hydrogen, and the rich gas to contain 50 per cent of carbon monoxide and 50 per cent of hydrogen. When pure iron is being produced, the metal obtained in the furnace is allowed to cool in the crucible, and decarbonization is effected by means of oxygen supplied to the crucible.
Patent GB-439044-A (GB)
Title: Improvements in or relating to shoe-upper shaping machines
IPC: A43D21/02
Filed: 1934-05-28
Abstract: 439,044. Boot-making machines. UNITED SHOE MACHINERY CORPORATION, 140, Federal Street, Boston, U.S.A.- (Assignees of Blanchard, B. B. ; Swampscott, Massachusetts, U.S.A.) May 28, 1934, No. 15798. Convention date, May 31, 1933. [Class 17 (i)] Pulling over.-A step-by-step gripper lasting machine has in addition to the usual support engaging the insole rib to prevent lateral displacement of the work, an auxiliary member arranged to penetrate the insole to support the work during the period of most strain on the rib, and to be withdrawn prior to the feed of the shoe to the next lasting position. As applied to the machine described in Specification 283,978, [Class 17 (i)], wherein the rib support 10 serves to clinch staples driven to secure the upper in lasted position, an auxiliary support 68 has two points 70 and is carried by a slide 66 guided in a member 64, secured to the shoe rest holder 49. The slide 66 is pivoted to a block 80 guided on a stem 82 projecting upwardly from the member 64 the slide being urged downwardly by a spring 84 positioned between the block 80 and a second block 90 secured on the upper end of the stem. The block 80 is normally held raised by a latch 86 engaging the block 90, and freed by a spring blade 98 carried by the slide 22 carrying the staple nozzle described in the prior Specification. The points 70 are thus caused to engage the insole just after the commencement of the forward movement of the slide 22. To retract the points prior to work feed the block 80 has a lug 110 co-operating with a latch 108 on the link 36 on the staple transferring slide described in the prior Specification. As the slide 22 commences its rearward movement and the link 36 its upward movement, the latch 108 at that time being below the lug 110, the block 80 is raised until the latch 86 again engages the block 90, the latch 108 being adjustable so that sufficient lift is given to the lug before retraction of the slide 22 separates the parts. The shoe rest holder 49 is carried by a sleeve 50 rotatable in a fixed sleeve 52 and provided with an arm 56 engaged on one side by a stop screw 58 and on the other side by a spring 62 so that the support may yield to accommodate differing thicknesses of upper material.
Patent GB-325443-A (GB)
Title: Improvements in and relating to poppet valves
IPC: F01L3/00
Filed: 1929-05-22
Abstract: 325,443. Bowler, T. May 22, 1929. Seats. -The seating of a poppet valve for internal combustion engines &c. comprises a ring 16 held by a cover plate 11 against vertical displacement whilst allowing for lateral self adjustment. The apertures in the cover plate are recessed on their under side, and the seating rings are correspondingly rebated, as shown; the cover plate 11 is secured by the cylinder head 4 and also by screws passing into the cylinder block.
Patent GB-290846-A (GB)
Title: Improvements in or relating to furnaces
IPC: F23L7/00
Filed: 1927-06-14
Abstract: 290,846. Dann, C. B., and Thoresby, F. June 14, 1927. Firebridges of the kind comprising a hollow vertical partition closed at the top by coverpieces f having openings y through which steam and air is supplied to consume unburnt gases have portions, of the base and side members g of the partition covered with plastic material j held in place by metal formers k of grid-like shape. The cover-pieces are of semicircular form and are serrated to hold the plastic material in place, while the openings y are tapered and communicate by channels z<1>, z<2> with spaces z formed in the cover-pieces. The formers k comprise horizontal members l and vertical members m having projections n between which the plastic material is forced. Studs o passing through the side members g hold the formers in position. The base members h are supported in a distancepiece r resting on the furnace casing s, and engage with the side members g by tongues and grooves. Web members w support a steam pipe a having discharge openings b, b<1>, which are angularly adjustable relatively to one another, and vaporized oil is supplied through a pipe d. A shutter t adjusted by a handle u regulates the supply of air to the bridge, and a steam superheating coil c is provided.
Patent GB-150850-A (GB)
Title: Improvements in the suspension of sidecar bodies
IPC: B62K27/02
Filed: 1919-06-24
Abstract: 150,850. Mead, F. W. June 24, 1919. Strip springs.-A volute spring E, which is secured at its inner end on a bolt A<10> on the chassis of a motor-cycle sidecar and at its outer end to one of a pair of lugs C<2> on the body, is surrounded by a pair of semi-circular plates C<3> bolted to the lugs C<2>.
Patent GB-875107-A (GB)
Title: Guide means for flexible hose, cables and the like connected to moving bodies
Inventor: ELSDON MICHAEL BISHOP
IPC: F16L3/015
Filed: 1959-05-08
Abstract: 875,107. Taking up slack of flexible members. BRITISH OXYGEN CO. Ltd. May 4, 1960 [May 8, 1959], No. 15893/59. Class 78 (2). A tool carrier 10 for a flame-cutting torch (not shown) is movable on spaced rails 11 (one only shown) and is connected by flexible members (e.g. electric cables and gas supply hose) 17 to a fixed service point 18. The flexible members 17 are disposed in a loop, the upper run of which is supported on carriage 13. The latter is driven in the same direction as the carrier 10, but at half the speed, by the interaction of a rack 19, pinions 20, 23 and a rack 24 on the carriage 13.
Patent GB-1515013-A (GB)
Title: Rotary mower with blade arrester apparatus
IPC: A01D69/10
Filed: 1975-04-18
Abstract: 1515013 Stopping IC engines of lawnmowers TORO CO 18 April 1975 [25 April 1974] 16114/75 Heading A1F [Also in Division F1] The internal combustion engine of a lawnmower is stopped by stopping the flow of either exhaust gases or intake fluids. As seen in Figure 2 exhaust gases exit from chamber 52 via valve 58 through a passage 56. A second, muffler-valve 32, comprising a poppet valve having a head 63 and stem 68, moves within corresponding holes 104 in the baffle plates 70 under the action of a cam 86 operating against the action of the spring 82 in response to movement of the actuating wire 96 of the bowden cable 36 connected to a dead mans handle 38. In the alternative embodiment of Fig. 6 a rotary valve 44 comprising a cylindrical valve head 124 having a cylindrical hole 128 drilled in it, is mounted in the fuel-air inlet pipe 46 and controlled by a pivot cam 110 connected to an actuator wire 112 of a bowden cable 48 connected to the handle 38. The control which actuates the stopping apparatus of the IC engine may also open a switch in the ignition circuit.
Patent GB-798656-A (GB)
Title: Pneumatic or hydraulic stowing pipes
IPC: C21D9/14
Filed: 1956-05-24
Abstract: A process for the production of pneumatic or hydraulic pipes comprises heating the pipes by an external burner to a temperature close to but below the hardening temperature and then heating the inner surface above the hardening temperature and quenching, the outer surface being maintained below the hardening temperature during the heating of the inner surface to hardening temperature.  During the final heating of the inner surface, which may be performed by a burner followed by a quenching device, the outer surface may be subjected to an air blast or to an air blast and a spray of water, the latter moving relatively to the pipe to form a helical or zig-zag pattern of material having a greater depth of softness than the remainder of the material.  The pipe or the cooling device may be given a rotary or an oscillatory movement.
Patent GB-228781-A (GB)
Title: Improvements in valves
IPC: F16K1/02
Filed: 1924-07-05
Abstract: 228,781. Kings Patent Agency, Ltd., (Aktiebolaget C. T. C.). July 5, 1924. Indicators, applications of; lift valves. - A valve, particularly applicable for heat radiators, comprises an internally-threaded casing 1 and a threaded spindle 2 carrying the valve member. The spindle is square at the top, and is rotated by a key 8 which allows axial movement of the spindle. The lower edge 18 of the key projects outwards and is held by a flange on the nut 5, which screws on to the casing. The key is externally threaded to receive a nut 14 which retains a conical graduated washer 16 in position. A fixed mark on the casing co-operates with the graduated scale to indicate the opening of the valve. In a modification, the washer 16 is secured to the nut 5 so that it is stationary, while an indicating mark is formed on the key. In another modification, the member 16 is in the form of a sleeve surrounding the key hub, and has an external flange which is secured by the nut 5.
Patent GB-379733-A (GB)
Title: Improvements in advertising signs
IPC: G09F19/18
Filed: 1931-06-04
Abstract: 379,733. Changing signs. SIMON, L. J., 5, Holmdene Avenue, London. June 4, 1931, No. 16194. [Class 3 (i).] Optical-projection apparatus.-Transparencies 18 carried by an intermittently rotated disc 17 are optically projected on a screen 10 to which a to-and-fro motion is imparted so that the image varies in size, a similar motion being given to the objective lenses 22 to keep the image in focus. The screen 10 is translucent, and is suspended from side struts 6, pivoted at 8, to which an oscillation is conveyed by a link 7 connected to a pivoted cam 5 controlled by a pin 4 on a rotary disc 3. A pin 20 on the link 7 actuates the lenses 22, and a pin 11 imparts step-by-step motion in opposite directions to the disc 17 and to a colour disc 19 through a crank 12, rod 14, and pawl-andratchet mechanism. The screen 10 is viewed through a transparent mirror 25, and the lamp 26 is extinguished during retraction of the screen 10 and change of transparency 18 by a rotary cam switch 23, 24. The cam 5 is shaped to give a slow forward feed of the screen 10, a dwell, and then a rapid return.
Patent GB-1147931-A (GB)
Title: Process for producing negative hydrogen ions
IPC: G21K1/14
Filed: 1966-04-13
Abstract: 1,147,931. Molecular beams. LAKE FOREST COLLEGE. 13 April, 1966 [3 May, 1965], No. 16266/66. Heading G6P. [Also in Division H1] In a negative, metastable hydrogen ion beam forming process, metastable hydrogen atoms are first produced and then ionized by collision with gas atoms. The metastable atoms are formed from protons in the collision reaction:- where M is an alkali metal vapour and 2S is the electron energy level of the metastable atoms. The metastable atoms pass into a gas atmosphere where a further collision reaction occurs to effect ionization:- where G is a gas atom. The protons are formed by electron bombardment of molecular hydrogen, collimated magnetically and then directed into the alkali vapour. To isolate the neutral metastable hydrogen atoms, the beam emerging from the alkali vapour atmosphere is passed through an electrostatic field where lateral deflection of the charged particles occurs. Magnetic polarization of the metastable atoms is then effected in a non-uniform magnetic field before entry into the ionising gas cell where preferential ionization of the polarized metastable atoms takes place. Polarization of the atoms is effected in a strong magnetic field and the nuclei are polarized in a weak field. No ground state, H(1S), atoms are ionized. The resultant ions are passed through an electrostatic analyser which directs a collimated beam into a Faraday cap. Cesium, potassium, rubidium, and sodium are used for the alkali vapour and oxygen, xenon, krypton, nitrogen, helium &c. for the gas G.
Patent GB-1484741-A (GB)
Title: Analysing a train of electrical signals
IPC: G06K7/10
Filed: 1975-04-21
Abstract: 1484741 Analysing a train of electrical signals INTERNATIONAL BUSINESS MACHINES CORP 21 April 1975 [30 April 1974] 16302/75 Heading G4M Bar coded data on a document is scanned by a camera and a video signal is fed to a shift register 41 and a gate 47 closed during intervals in which no data pulses are expected as described there are 25 data pulses per line with each spacing between successive pulses defining a bit value and after 10 pulses have been received by the shift register circuit 44 produces a pulse D having a length equal to the line sweep duration less a time interval corresponding to 15 pulses, so that the pulse D terminates a time corresponding to five pulses before the expected first data pulse in the next line sweep. After the shift register receives 25 pulses a pulse E is produced by circuit 45 having a duration equal to the time of five pulses and which thus terminates five pulses after the expected end of the data. A latch L enabling gate G is set at the end of pulse D and reset at the end of pulse E.
Patent GB-401397-A (GB)
Title: Improvements in or relating to bedsteads and cots
IPC: B60B33/06
Filed: 1932-06-10
Abstract: 401,397. On -and off castors. PHILLIPS, Ltd., A., and PARRY, W. J., Eyre Street, Spring Hill, Birmingham. June 10, 1932, No. 16379. [Class 52 (i).] Bedsteads are provided with a pair of on- and-off castors 4, Fig. 1, each castor being carried by a rod or tube 5 sliding in a vertical tubular member 6, the tubes 5 being each provided with a projection 8, Fig. 2, which operates in a slot 6a, 6b, in the tubular member 6, the two projections 8 being pivotally connected to a coupling rod 9, so that both castors may be operated simultaneously. The slots are shaped as shown, so that the castors move automatically into the " on " position on lifting the bed, and so that the projections pass into the horizontal portions 6b of the slots when the castors touch the floor.
Patent GB-117554-A (GB)
Title: Improvements in and relating to Spring Surfaces for Mattresses, Seats, Cushions and the like.
Inventor: NOLAN JOHN RICHMOND
IPC: A47C23/053
Filed: 1917-11-09
Abstract: 117,554. Nolan, J. R. Nov. 9, 1917. Spring surfaces. - The end convolutions of hour glass type springs employed in seats, cushions, and mattresses are connected together by clips b formed of comparatively stout material, from 1-16 to 3-32 inch in thickness, applied under pressure. The ends of the springs are turned back as shown at c. The use of clips such as described obviates the necessity for a surrounding cord &c.
Patent GB-929230-A (GB)
Title: Process for the preparation of zinc oxide pigments
IPC: C09C1/04
Filed: 1960-05-10
Abstract: Zinc oxide pigments are rendered organophilic by mixing an aqueous suspension of the zinc oxide with an aqueous solution of an alkali metal salt of a fatty acid having at least 16 to 18 carbon atoms in an amount of 2,5 to 6,0% by weight of the zinc oxide, heating to 60 DEG  to 80 DEG C., separating the precipitated zinc oxide, drying and disintegrating the product.  The fatty acid may contain an OH group. In examples, sodium stearate and potassium recinoleate are used, and the pigments are incorporated in paints containing linseed oil varnish, white lead, carbon black, chrome yellow, red iron oxide and Prussian blue.
Patent GB-612696-A (GB)
Title: Improvements in sewing machines with a free work-arm
IPC: D05B73/00
Filed: 1946-05-30
Abstract: 612,696. Sewing-machines. KELLER, J. May 30, 1946, No. 16508. Convention date, June 7, 1945. [Class 112] The free work-arm of a sewing-machine is made invertible and arranged to present a flat upper surface in one position, for ordinary sewing, and a rounded surface in the other position, for darning. Means are provided to ensure that the feed mechanism is inoperative in the latter position. Frames.-In the arrangement shown, the standard 2 of the machine has welded or otherwise fixed to it a circular spider 3 which supports the tubular work-arm 7 and the mechanism therein. The lower half of the work-arm, in the position shown, is of rectangular cross-section and is provided with feed-dog and needle apertures, and the upper half is semi-cylindrical and has a needle hole only. The end of the arm is rounded and is provided with an inspection cover 7<1>. The arm is secured to rings 5, 6, of suitable form, rotatably mounted on the spider 3, and is held in either of its working positions by a pivoted detent 11 entering one of two notches in the ring 5. Feed regulating.-A detent 16 connected to the feed-adjusting mechanism is freely slidable through a notch in the ring 5 when the flat surface of the work-arm is in use, but when the rounded surface of the arm is uppermost this detent is locked in the position corresponding to zero or minimum stitch-length. A second sliding detent 20, connected to a hand-actuated lever 20a which shifts a block 24 on the feed-lift rock-shaft 25 into or out of engagement with its operating mechanism, is blocked when the flat surface of the work-arm is not in its position of use to ensure that the feed dog is dropped.