baber/WOPTO huggingface dataset:
Patent GB-261048-A (GB)
Title: Improvements in the production of complex aurothiosulphate compounds
IPC: C01B17/64
Filed: 1926-11-08
Abstract: 261,048. Andersen, F. J. E., Siesbye, I., and Weitzmann, N. J. H., (trading as Dansk Chemo-Therapeutisk Selskab ved Andersen Siesbye & Weitzmann). Nov. 7, 1925, [Convention date]. Gold double thiosulphates. - Double thiosulphates of gold with an alkali or alkaline earth metal or ammonium are obtained by dissolving aurous bromide or iodide in a solution of bromide or iodide of the other metal and adding a calculated quantity of the thiosulphate of the other metal, the reaction being effected in a solution containing alcohol. The double thiosulphate is precipitated by adding alcohol, and may be recrystallized from distilled water. In an example, aurous bromide is dissolved in a 50 per cent alcoholic solution of sodium bromide, and sodium thiosulphate is added, the product being- precipitated by the addition of alcohol.
Patent GB-1400741-A (GB)
Title: Leather products
IPC: C14C11/00
Filed: 1972-06-15
Abstract: 1400741 Coated leather products KYOWA HAKKO KOGYO CO Ltd 15 June 1972 [18 June 1971] 28115/72 Heading B2E [Also in Division C3] A process for finishing a natural leather comprises coating (particularly by spraying) a base-coated natural leather with a solution of an amino acid polymer containing as an essential component a repeating structure of general formula: where R is C 1-6  alkyl, a C 6-12  aromatic hydrocarbyl group or a C 6-10  alicyclic hydrocarbyl group, m is 1 or 2 and n is 40-8,000 in a solvent comprising a halogenated hydrocarbon and at least one of furfuryl alcohol, benzyl alcohol, 1, 3-dichloro-2-propanol or 2, 3-dichloro-1-propanol, and drying the coated leather to drive off the solvent. The solvent may also incorporate at least one high boiling solvent selected from dioxane, N, N-dialkyl formamide or -acetamide, dialkyl sulphoxide, acetates, toluene, xylene, butanol, ethylene glycol mono (C 1-4  alkyl) ether acetate, methyl isobutyl ketone, N-C 1-4  alkyl pyrrolidone, and diacetone alcohol. The base coating on the leather may comprise black pigment paste, acrylic resin, protein additive and water. The amino polymer may particularly be poly-L- (or -D-) glutamic acid -γ-methyl ester and may also be (a) a homo- or co-polymer of an aspartic acid-#-ester or other glutamic acid-γ- ester; (b) a copolymer obtained by reacting one or more of urethane prepolymer, polyurethane elastomer, styrene or acrylic derivative (especially acrylonitrile) with a polymer (a); (c) a copolymer of polyurethane with an aspartic acid-#-ester-N-carboxylic acid anhydride or a glutamic acid-γ-ester-N-carboxylic acid anhydride; (d) a mixture of at least two of (a), (b) and (c); or (e) a blend of at least one of (a), (b), (c) and (d) with an alkyd resin or a polyurethane elastomer.
Patent GB-776117-A (GB)
Title: Improvements in or relating to apparatus for sorting record cards and leaves
IPC: G06K21/02
Filed: 1955-10-03
Abstract: 776,117. Record-sheet holders. DEQUEKER SOC. ANON. Oct. 3, 1955 [July 11, 1955]. No. 28117/55. Classes 16 and 146(1). Apparatus for the comparison of a series of overlapping record cards and leaves comprises a carrier tray 1 with a sorting rack, the tray 1 being provided with a post 4, 4a near each upper corner, a flat bar 8 engaged on the posts 4, 4a and having a longitudinal slot 10 in which pins 9 for the holes in the cards are fitted and fixed at the required distance apart, a clamping bar 19, with a longitudinal slot 20 for passage of the pins 9, on top of the bar 8 to hold down the cards and leaves and a locking device 18, 18a to secure the components in assembled position. The tray 1 is fixed by screws 2, 2a to legs 3, 3a and the posts 4, 4a have threaded ends 5, 5a also screwed into the legs 3, 3a, the posts having a body portion with a curved groove 6 and pointed head 7. The pins 9 are held against the flattened edges 11 of the slot 10 in bar 8 by screws 13 with enlarged heads 12. In an alternative pin arrangement, narrower pins have a collar bearing on the top of the bar and a gudgeon pin screwed therein, or integral therewith, on which a nut is screwed to bear on shoulders 11. The spacing of the pins can therefore be altered to correspond to the distance apart of the punched holes in the cards to be used. The clamping bar 19 has, in addition to slot 20, rectangular openings 21 for the passage of knobs 18, 18a screwed to the bar 8. Each knob 18, 18a has a vertical hole 22 for reception of the posts 4 or 4a and a transverse bore 23 housing two balls 24, 25 pressed apart by a spring 26. The ball 24 engages in the groove 6 of the post 4 or 4a and the ball 25 engages over the edge of the hole 21 in bar 19 to lock the bar 8 to the tray 1 and the bar 19 to the bar 8. A ruler 27 is hinged by a block 28 to a rod 29 supported under the tray 1 on the legs 3, the ruler 27 having a curved part 27a so that it can pivot round the edge 1a of the tray while the cards are positioned. The tray 1 can be raised to a number of different positions by means of a strut 32 which engages one of a number of abutments 36, 37, the strut 32 being pivoted at 33 to a U-shaped bar 30 hinged to the tray 1 at 31. The strut 32 is pressed upwardly by a spring on hinges 33 when the upper edge 1b of the tray is raised, the tray being held in the horizontal position by a spring-pressed ball, on an upper abutment 39, engaging a hole 42 in the end 30a of the bar 30.
Patent GB-1118480-A (GB)
Title: A process for the preparation of 2-exo-4,5,6,7,8,8-heptachloro-4,7-methano-3a,4,7,7a-tetrahydroindane
Inventor: SCHULZE-STEINEN HANS JUERGEN
IPC: C07B61/00
Filed: 1967-06-19
Abstract: The title compound is prepared by reacting 4,5,6,7,8,8 - hexachloro - 4,7 - methano - 3a,4,7,7a -tetrahydroindene with HCl gas at atmospheric pressure in presence of (a) FeCl3 or AlCl3, and (b) an optionally chlorinated hydrocarbon.
Patent GB-261381-A (GB)
Title: Improvements in or relating to lamps or headlights
IPC: F21S8/12
Filed: 1926-11-10
Abstract: 261,381. Naamlooze Vennootschap Machinerieen-en Apparaten Fabrieken. Nov. 10, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Vehicle lamps. - A vehicle lamp is provided. in addition to the front lens A, with one or more lenses A<1>, A<2> combined with external reflectors B, B<1> for projecting beams parallel or substantially parallel with the main beam. The reflectors B, B<1> may be flat, or the whole or part may be curved so as to vary the direction of part of the rays. A spherical reflector D may be, arranged behind the light source C.
Patent GB-1235877-A (GB)
Title: A reciprocating pump provided with a regulating device
Inventor: COLLOT ANDRE
IPC: F04B49/12
Filed: 1968-06-13
Abstract: 1,235,877. Reciprocating pumps. A. COLLOT. June 13, 1968, No.28268/68. Heading F1A. A pump delivery pressure measuring device 2 is connected to a stroke varying device 1 of the pump, so that the stroke may be varied inversely to the delivery pressure. The device 2 is attached to a roller 4 carried in a slideway 3 which is freely rotatable about a shaft 6; the device 1 is connected to an L-shaped lever 5, 13 freely rotatable about shaft 6 and attached to a roller 15 in slideway 3. As shown in Fig. 1 movement of the roller 4 does not effect the slideway, however if the slideway is angularly displaced by means of levers 9 and 10 keyed to shaft 6, movement of roller 4 causes rotation of slideway 3 about a pivot pin 12 carried by lever 10. This movement is transmitted via roller 15 and lever 5, 13 to the stroke varying device. In another embodiment, Figs. 4 and 6, lever 5, 13 is keyed to, and lever 10 is freely rotatable about shaft 6, and lever 9 is connected to shaft 6 via spring 21 in housing 20. Initially spring 21 acts as a rigid connection and the slideway is given an angular displacement by lever 9. Movement of roller 4 causes rotation of the slideway about roller 15 without effect on the stroke until it abuts a stop 26 whereupon the roller 15, lever 5, 13 and shaft 6 are rotated, against the action of spring 21, to vary the stroke.
Patent GB-816518-A (GB)
Title: Conjoint production of acetylene and sodium bicarbonate
IPC: C01D7/18
Filed: 1956-09-17
Abstract: Acetylene and sodium bi-carbonate are jointly produced by a process which comprises the following steps in order: (1) calcining calcium carbonate to produce carbon dioxide and calcium oxide; (2) reacting a portion of the calcium oxide with carbon to produce calcium carbide and carbon monoxide; (3) reacting said calcium carbide with water to produce acetylene and calcium hydroxide; (4) reacting calcium hydroxide so obtained with ammonium chloride to produce ammonia and calcium chloride; (5) reacting the ammonia produced in step (4) and carbon dioxide with sodium chloride to produce ammonium chloride and sodium bicarbonate; (6) separating ammonium chloride from sodium bicarbonate; and (7) recycling ammonium chloride thus produced to step (4).  In a preferred embodiment, limestone is calcined at 1100 DEG  C. with coke to produce CaO and CO2.  1950 lbs. of the lime is heated in a carbide furnace at 2000 DEG  C. with 1250 lbs. of coke. The CaC2 produced is cooled and crushed and then treated with water at ambient temperature to produce acetylene which is collected.  The resulting Ca(OH)2 is mixed with the remainder of the CaO from the CaCO3 calcining step and then mixed with ammonium chloride made from ammonia gas and sodium chloride, and the whole subjected to the action of CO2 in carbonating towers.  From the lower section of the carbonating towers a product containing sodium bicarbonate and ammonium chloride is removed at 25 DEG  C. and filtered to separate the ammonium chloride liquid from the solid sodium bicarbonate which is then calcined at 190 DEG  C. to produce sodium carbonate.
Patent GB-1008414-A (GB)
Title: A load controlling circuit
IPC: H02M1/08
Filed: 1962-12-21
Abstract: 1,008,414. Semi-conductor circuits. FASTENER CORPORATION. Dec. 21, 1962 [Dec. 22, 1961], No. 28337/64. Divided out of 1,008,412. Heading H3T. A load-controlling circuit for use in controlling the energization of a load, such as a solenoid coil 2 of the stapling machine described in Specification 1,008,412, by a source of undulating potential comprises a first circuit means 7, 8, 9 for connecting a gated rectifier 3 and the coil in series with the source, manually-operable switch means 5, and second circuit means 14, 15, 16 controllable by the switch for controlling the gated rectifier so as to render it conductive for no more than one complete half-cycle of the undulating potential occurring following the operation of the switch. With the switch 5 in the position shown, current flows from the conductors 4 through a rheostat 6, resistor 7, rectifier 8 and resistor 9, through a rectifier 10 to charge a capacitor 11 and, via the contacts 5a, to charge a second capacitor 13. The second circuit includes a capacitor 15 and resistor 16 connected to the base electrode of a transistor 14. When the switch is operated so as to open the contacts 5a and close the contacts 5b and, at the start of the next positive-going half-cycle, the transistor 14 is placed in a conductive condition via the capacitor 15 and resistor 16, so as to thereby cause a gated rectifier 18 to become conductive and allow the charge from the capacitor 13 to pass therethrough and via the contacts 5b and rectifier 3 energize the coil 2.
Patent GB-1299259-A (GB)
Title: Improvements in or relating to breech blocks for firearms
Inventor: EKFELDT AXEL EMANUEL
IPC: F41A19/13
Filed: 1970-06-11
Abstract: 1299259 Breech blocks FORENADE FABRIKSVERKEN 11 June 1970 28340/70 Heading F3C A breech block 3 for a rifle comprises a body portion having a bore 15 in which a head 5 is locked by a radially extending pin 9. The head 5 is provided with eccentric bores for the reception of a firing pin 6 and a spring loaded ejector 7 which each have a transversely directed groove for locking co-operation with a flat U-shaped clip 10 introduced transversely into the head 5. The head 5 is further provided with a groove for the reception of an extractor 8, a yoke 11 of which abuts the clip 10 to prevent its rotation. The radially extending pin 9 and the extractor are held in place by a countersunk spring clip 14 which encircles the body portion of the breech block. The body portion has locking means, e.g. locking lugs 4, at its forward end for guiding and locking the breech block in the receiver.
Patent GB-675700-A (GB)
Title: Method and machine for the continuous production of glass tubing and rods by drawing in the upward direction
IPC: C03B15/14
Filed: 1950-11-20
Abstract: 675,700. Glass tubing and rods. SCHULLER, W. Feb. 2, 1951 [Nov. 20, 1950], No. 28375/50. Class 56. In the making of glass tubing or rods the molten glass is passed into a rotating pot 3 from which it is continuously drawn upwardly over a jet member 12 disposed centrally of the pot at a level, below the molten glass. A cylinder 15 is concentrically mounted in the pot and rotates in synchronism therewith, the lower edge of the cylinder dipping into the molten glass in the pot. A stationary counter-weighted water cooling jacket 18 is provided within the cylinder 15. The jet member may comprise an air nozzle for forming tubing which may be replaced by a solid member when rods are to be formed.
Patent GB-1284809-A (GB)
Title: A laser processing apparatus
Inventor: TANIGUCHI ICHIRO
IPC: B23K26/04
Filed: 1970-06-11
Abstract: 1284809 Photo-electric control systems MITSUBISHI ELECTRIC CORP 11 June 1970 28435/70 Heading G1A [Also in Division G3] In a laser processing apparatus in which a laser beam 2 is focused at a point 4 on a workpiece 5, to form a hole or a slot, and a monitor beam 15 is focused at the same point 4 and after reflection therefrom is focused by an optical system 10, 9, 16, 17 at a point F 0 , a plate 18 containing a pinhole is vibrated in a direction perpendicular to the optic axis of the lens 17 about the point F 0 , thereby modulating the output from a photo-cell 20. This output is amplified and supplied to a phase sensitive detector 22 whose D.C. output drives a servomotor 24 to adjust the distance between the lens 3 and workpiece 5 to restore the focal point 4 to the surface of the workpiece. This restoring movement may be a movement of the lens 3 alone, a movement of the entire assembly 100, or a movement of the workpiece. The monitor light source 14 may be a lamp or a second, low-power laser, after a point on the workpiece has been processed, the workpiece is moved on for the next point to be processed. A second embodiment uses a single pulsed laser to produce both the monitor and processing beams, Fig.3 (not shown). During pulses, the laser beam passes through an aperture in an inclined mirror (26) to process the surface and hence be absorbed thereby. Between pulses, the low power laser output is reflected from this mirror after reflection from the workpiece and focused at the point F 0 . In a further embodiment the low power output from the non-processing end of a laser is divided by a prism (29) to provide two monitor beams, Fig.6 (not shown). These are focused at two points close to and equi-distant from the processing beam. After reflection these two beams are focused at points (F 10 , F 20 ) corresponding to two different pinholes in a vibrating plate, each pinhole having an associated photo-cell (37, 38). The photo-cell outputs are supplied to separate phasesensitive detectors whose outputs are summed and then fed to the servomotor. One of the monitor beams may be dispensed with.
Patent GB-875685-A (GB)
Title: Allo-ocimenol and its derivatives
Inventor: THEIMER ERNST THEODORE
IPC: C07C29/124
Filed: 1958-09-05
Abstract: The invention comprises a mixture of conjugated diolefinic tertiary alcohols having D15 = 0.877 and n20D = 1.4913 and having the structural formula <FORM:0875685/IV (b)/1> where one of the symbols R1 and R2 is methyl and the other is ethyl and a process for producing allo-ocimenol having the empirical formula C10H18O and derivatives thereof which comprises reacting hydrogen chloride with allo-ocimene in the proportion of not more than 1 mole of hydrogen chloride per mole of allo-ocimene, hydrolysing the resulting allo-ocimene hydrochloride, prior to any substantial decomposition of same, with an aqueous base in the presence of a non-ionic emulsifying agent, and isolating allo-ocimenol, and then if desired, hydrogenating the allo-ocimenol to tetrahydro allo-ocimenol and further, if desired, esterifying the tetrahydro - allo-ocimenol. The hydrochlorination and hydrolysis steps are preferably carried out continuously.  In examples technical allo-ocimene is hydrochlorinated with anhydrous hydrogen chloride alone or diluted with dry nitrogen and the resulting hydrochloride run directly into an aqueous solution of sodium hydroxide and the emulsifying agent which is then stirred 20 hours at room temperature and allo-ocimenol recovered by steam distillation.  The alcohol so obtained is then hydrogenated over Raney nickel to give tetrahydro-allo-ocimenol which is converted to its acetate by treatment with acetic anhydride.  The compounds find application as perfume bases.
Patent GB-1260910-A (GB)
Title: Fluoroacetylaminotrichloromethylmethane ethers
Inventor: FEST CHRISTA
IPC: A01N/
Filed: 1969-06-05
Abstract: 1,260,910. Fluoroacetamides. FARBENFABRIKEN BAYER AG. 5 June, 1969 [9 July, 1968; 26 July, 1968], No. 28557/69. Heading C2C. Compounds of formula FCH 2 CONHCH (Cl 3 ) OR in which R is a C 2-6  alkyl or C 2-6  haloalkyl group or an aryl group optionally substituted by one or more halogen atoms or C 1-4  alkyl, nitro, cyano, thiocyano, C 1-4  alkylthio or C 1-4  alkylsulphonyl groups are prepared by reaction of a compound of formula FCH 2 COHNCH(Cl 3 )Cl with an alcohol or phenol or an alkali metal salt thereof. The compounds of the invention have insecticidal, fungicidal, anti-microbial, acaricidal, herbicidal and selective rodenticidal activity.
Patent GB-599234-A (GB)
Title: Improvements in or relating to variable speed gears
IPC: F16D67/00
Filed: 1945-10-29
Abstract: 599,234. Change-speed gearing; ratchet clutches. NAPIER & SON, Ltd., D., and BARLOW, B. W. Oct. 29, 1945, No. 28580. [Class 80(ii)] In a change-speed gear of the type in which gears fast on a driving shaft are in constant mesh with gears loose on a driven shaft to which they can be selectively connected by clutch members thereon, both the movement of one gear selecting clutch which effects its disengagement and the movement of another gear selecting clutch which 'effects its engagement when altering the gear ratio are actually effected by temporary overspeed driving of the driven shaft through a clutch and gears operative only for this purpose. As shown applied to the two speed drive of a supercharging compressor, a driven impeller shaft E has freely mounted on it gears H, G, J in constant mesh with gears B, C, D fast on a driving shaft (not shown). The smallest gear J is connected to the shaft E through a fillable fluid clutch M, and the other gears H, G, giving respectively the normal lower and higher speed ratios, are connected to the shaft E through torque - responsive overrunning clutches comprising dog clutch members H<SP>4</SP>, G<SP>4</SP> having oppositely handed helical screw connections with the elongated hubs of the gears H, G respectively and co-acting with dogs on opposite sides of a member P secured by a drum O to the shaft E. Engagement of the fluid clutch M rotates the shaft E at an overspeed relative to either of the normal ratios and throws out by torque-screw action whichever of the dog clutches is engaged, the disengagement being rendered more certain by friction members Q on the clutch members H4, G<SP>4</SP> outwardly spring-biased to engage the inner cylindrical surface of the drum O. Subsequent disengagement of the clutch M causes engagement of the higher gear ratio as the shaft E slows down sufficiently to reverse torque on the member G<SP>4</SP>, unless a sleeve T has previously been slidden to engage axial splines thereon, in constant mesh with splines T<SP>1</SP> on the gear G, with splines G<SP>6</SP> on the member G<SP>4</SP>, when the higher ratio clutch is prevented from engaging and the shaft E continues to slow down until torque reversal on the member H4 brings in the lower gear ratio. The dog clutches may be replaced by friction clutches or by free-wheel clutches of the kind described in Specification 503,523. In Fig. 1 (not shown) the torque-responsive clutch members screw along helical splines on the driven shaft and directly engage through dogs the gears H, G, frictional lagging means being provided in parallel; while manually-operated restraining means are supplied for the higher ratio clutch member.
Patent GB-203218-A (GB)
Title: An improved method of activating and re-activating metallic catalysts
IPC: B01J23/70
Filed: 1922-10-20
Abstract: Catalytic metallic surfaces, particularly those of the nickel employed in hydrogenating oils &c., are activated or re-activated by subjecting them to electrolytic anodic oxidation, followed by reduction with hydrogen.  Nickel or other metal, in the form of wool, turnings, plates, ribbons, rods or balls, is made the anode in a bath in which a salt which does not allow the metal to pass into solution, for example, sodium carbonate, is used as electrolyte.  After its surface has been blackened uniformly, the anode is removed, washed, dried, and reduced with hydrogen at 250 DEG  C. for a short time. Spent catalysts can be treated in a similar way, after adhering oil has been removed.  By passing purified oil in a continuous manner through a vessel containing the activated turnings and charged with hydrogen, hydrogenation is effected.  In a modification of the process for preparing the catalytic material, a compound of nickel is precipitated in powder form by increasing the voltage of the electrolytic bath or by using as electrolyte a mixture of a salt which forms a soluble compound of nickel with one which form an insoluble compound, for example, sodium nitrate and sodium carbonate. The precipitate is then washed, dried and reduced with hydrogen.  The waste nickel residues referred to in Specification 185,174 may be used as starting material.
Patent GB-173874-A (GB)
Title: Improved safety apparatus for cage hoist doors
IPC: B66B13/24
Filed: 1920-10-09
Abstract: 173,874. Barker & Sons, Ltd., and Beswick, L. Oct. 9, 1920. Lift cages and doors, locking and unlocking. - In lifts of the handchain controlled type, a chain-locking device on the cage is actuated by a cam on the well door and a locking-device for the door is arranged in the well to be actuated by a cam on the cage. The chainlocking device comprises spring pins E, E', Fig. 3, carried by the member D, which is slidably mounted in a box A carried by the cage B. The member D is connected by studs H, H<1> to a cam J which coacts with a slidable pin L mounted on the framework of the well and carrying a roller M. A long cam O on the well door G bears against the roller M when the door is open, Fig. 1, and causes the engagement of one of the pins E, E' with a link of the handing-chain C. The door-locking device, Fig. 5, comprises slidable bolts Q, Q<1> mounted in a bracket P on the framework of the well and connected by a centrally-pivoted link R. The bolt Q is normally pressed towards a cam U on the cage B by a spring T. When the cam comes into contact with the bolt Q, the bolt Q<1> is withdrawn from engagement with a socket V on the door G, and the door can be opened.
Patent GB-467065-A (GB)
Title: Improvements in the manufacture of tools from a steel alloy
IPC: C22C38/34
Filed: 1936-10-21
Abstract: Corrosion-resistant steel alloys for knives, scissors, surgical instruments, dies, and the like contain 0,6-2 per cent of carbon, 16-25 per cent of chromium, 0,2-2 per cent of molybdenum, 0,2-3 per cent of vanadium, and 1-7 per cent of tungsten, or, if the surface of the articles is to be case-hardened, the carbon content is 0,1-0,6 per cent.