baber/WOPTO huggingface dataset:
Patent GB-195366-A (GB)
Title: Improvements in or relating to the manufacture of hypochlorites
Filed: 1923-03-06
Abstract: Chlorine is passed into water containing a compound such as calcium carbonate or sodium bicarbonate which will neutralize hydrochloric acid but not hypochlorous acid.  The hypochlorous acid is then extracted from the solution by an organic solvent immiscible with water.  The solvents mentioned are carbon tetrachloride, chloroform, tetrachlorethane, ethylene chloride, and ether, in each case with the addition of a small quantity of an alcohol such as methyl, ethyl, isopropyl or butyl alcohol; or one of these alcohols may be used alone, when a compound is formed with the hypochlorous acid which separates from the aqueous liquid and can be removed therefrom by decantation or by extraction with a solvent, or by a current of air.ALSO:Chlorine is passed into water containing a compound such as sodium bicarbonate or calcium carbonate which will neutralize hydrochloric but not hypochlorous acid.  The hypochlorous acid is then extracted from the solution by a solvent which will not dissolve the chloride and is not miscible with water.  The solvents mentioned are carbon tetrachloride, chloroform, ethylene chloride, tetrachlorethane, and ether, in each case with the addition of a small quantity of an alcohol such as methyl, ethyl, isopropyl or butyl alcohol; or one of these alcohols may be used alone, when a compound with the hypochlorous acid is formed which separates from the aqueous liquor and may be removed therefrom by decantation or by extraction with a solvent or by a current of air.ALSO:Chlorine is passed into water containing a compound such as sodium bicarbonate or calcium carbonate which will neutralize hydrochloric but not hypochlorous acid.  The hypochlorous acid is then extracted from the solution by a solvent which will not dissolve the chloride and is not miscible with water.  The solvents mentioned are carbon tetrachloride, chloroform, ethylene chloride, tetrachlorethane, and ether in each case with the addition of a small quantity of an alcohol such as methyl, ethyl, isopropyl or buty alcohol; or one of these alcohols may be used alone, when a compound with the hypochlorous acid is formed which separates from the aqueous liquor and may be removed therefrom by decantation or by extraction with a solvent or by a current of air.  The solution or compound of hypochlorous acid is treated with a " strong alkali " such as sodium or potassium hydroxide or slaked lime to obtain a hypochlorite and regenerate the solvent.  In the production of calcium hypochlorite enough water is added to give a small excess over the hydrated salt Ca(OCl)23H2O, but the product obtained contains a considerable proportion of free lime, most of which can be separated by treating with water, filtering, and evaporating the solution of hypochlorite to dryness.
Patent GB-214397-A (GB)
Title: Improvements in machines for washing cans and like cylindrical receptacles
IPC: B08B9/36
Filed: 1923-03-07
Abstract: 214,397. Lyons & Co., Ltd., J., and Coyte, W. A. March 7, 1923. Cans and cylindrical articles, washing and cleaning. - A machine in which the cans are brushed internally and externally while immersed in cleaning fluid which is heated and circulated by a steam injector comprises a tank 2 on which is mounted an intermittently rotating can carrier consisting of discs 4 mounted on a shaft 5 rotated intermittently by a geneva motion from a shaft 10 driven constantly by gearing from a motor 21. The can grippers consist of jaws 25, 26 the jaws 25 being fixed to the discs 4 while the jaws 26 are fixed to oscillating shafts 27 and provided with arms 28 carrying rollers 29 adapted to be engaged by an arm 30 mounted on a shaft 31 which also carries an arm 32 having a roller 33 held by a spring 37 against a cam 34 mounted on the shaft 10. The jaws are held against the cans by springs 35 acting between the discs 4 and arms 36 secured to the shafts 27 and the cam 34 is arranged so that the cans 66 may be fed in at the top and are then gripped until they are positioned over external brushes 65, 67. At this point internal rotary brushes 41, 42 fixed to a hollow shaft 43 passing through a gland 44 in the tank, are advanced by a spring-controlled lever 48 acted on by a cam 58 rotated by gearing from the shaft 10, so as to enter the can. The shaft 43 carries a pulley 45 driven by a belt 46 from a pulley 47 mounted on a driven shaft 20, and the lever 48 is pivoted at one end to a bracket 54 rotatably mounted between collars 55, 56 on the shaft, a.nd at the other end to the framing 50 of the machine. The free end of the shaft extends through a gland 62 into a cleansing liquid supply tank 63 and receives the nozzle 64 of a steam pipe 65 so that liquid is forced into the can and circulated, returning by a pipe 76. When the inside of the can has been cleaned the grippers are released by the cam 34 so that the can is rotated by the internal brushes and the outside cleaned, then the can is gripped again and the internal brushes retracted, after which the geneva motion comes into action to rotate the bottle carrier another step. The geneva wheel 6 has radial slots adapted to be engaged by a roller 8 carried by a cam disc 9 mounted on the shaft 10 so that the wheel is moved through a portion of a revolution, and is held fixed during the cleansing periods by a roller 38 engaging one of the radial slots, this roller being carried by a lever acted on by the cam 9.
Patent GB-502763-A (GB)
Title: Hydraulic plunger driving gear for the tipping mechanism of converters, mixers, smelting ovens and the like
IPC: C21C5/50
Filed: 1938-03-02
Abstract: 502,763. Hydraulic transmission of power; tilting-furnaces. EVANS, O. (Hydraulik Ges.) March 2, 1938, No. 6609. [Class 69 (ii)] [Also in Group XII] Converters, mixers, smelting ovens, &c. are tipped by hydraulic mechanism comprising oppositely directed stationary plungers 7, 8 co-operating with a moving cylinder or cylinders 5 carrying a rack 3 engaging a pinion on the converter &c.
Patent GB-475241-A (GB)
Title: Improvements in the suspension of parachutes
IPC: B64D17/00
Filed: 1937-03-05
Abstract: 475,241. Parachutes. AEROSTATICA AVORIO, SOC. IN ACCOMANDITA SEMPLICE. March 5, 1937, No. 6623. Convention date, March 6, 1936. [Class 4] In a parachute having rigging lines 5 connected to elastic members 1, 2 surrounding the apex vent, the connection of the rigging lines is such that the elastic members assume a flat position concentric with one another when not under tension and the strength of the attachment of the rigging lines to the elastic members is maintained, even if one of the members break. The elastic rings 1, 2, Fig. 3, are connected by strips of leather 3 and silk 4 surrounded by knots 11 which pass through loops 8 in the rigging lines 5. The line 5 is arranged in the joint between two panels of the canopy and the loop and passes between two small cables 9 sewn round the periphery of the vent. One or more turns 12 of the knots 11 pass inside the strips 3, 4 so that the knot still holds if an elastic ring should break. The stitchings on the vent border are herring-bone. Pieces of rope 18, Fig. 7, may be attached to the rigging lines 14 and the reinforced edge 19 of the canopy to prevent the canopy being torn by the lines. The rope 18 may have two branches attached to the canopy. A reinforcing rope of elastic material may be inserted in rigging lines of tubular form where it is attached to the harness. The harness is connected to the lower eyelet of the rigging lines by two separate loops of tape, each reinforced by an interior rope. The eyelet is formed by binding the rigging lines in bundles.
Patent GB-402290-A (GB)
Title: Improvements in or relating to accumulators
IPC: H01M10/20
Filed: 1933-03-04
Abstract: An alloy consisting of 90 parts of tin and 10 parts of antimony is used in the construction of an accumulator.
Patent GB-150009-A (GB)
Title: Improvements in the actions of pianofortes
IPC: G10C3/16
Filed: 1919-03-18
Abstract: 150,009. Manchester, F. W. March 18, 1919. Pianoforte actions; dampers; pedal actions.-The check mechanism of an upright action comprises a vertically rising bolt engaging frictionally with the hammer head on recoil. Fig. 1 shows an action fitted with a damper, Fig. 2 shows a check action with separate damper mechanism, and Fig. 4 a detail. The key A<2> carries pilot screws A<3>, A<4> operating an inertia-controlled action of the type described in Specification 21993/12. Or the invention may be applied to actions of ordinary construction. The spigot D' is raised by the screw A<5> and is connected to the check block D<2>. with damper felt D<3>. The pin C<4>, Fig. 1, imparts an horizontal component of motion to the block to free the string H, sufficient clearing being made in the cloth bushings to allow for movement at about 45 degrees from the string. The upper surface of the check block D<5>, of suitably inclined projection, contacts with the underside of the hammer felt B<8> on rebound. Treble hammers may have a felt projection as in Fig. 2. The sustaining pedal may actuate a metal bar C<5> engaging projections D<8> from the check blocks to free the dampers, or it may apply tension to a cord E', Fig. 4, passing through staples or slots in one or more series of spigots, and thus raise the dampers within the limit of the stops C<6>.
Patent GB-895935-A (GB)
Title: A diffuser for tubular lamps
Inventor: HUTCHISON ANN
IPC: F21V3/02
Filed: 1961-02-23
Abstract: 895,935. Diffusers for tubular lamps. THORN ELECTRICAL INDUSTRIES Ltd. Feb. 23, 1961, No. 6745/61. Class 75(2) The diffuser comprises two side panels 11, 12 supporting a bottom panel 13, each longitudinal edge of which is formed as a flange 25 which is supported in a channel 17 formed along the adjacent side panel, the arrangement being such that each side panel can only be removed from the bottom panel when it is hinged about the flanged edge through a substantial position from the normal. The diffuser may be made of extruded plastic. The side panels are provided with ridges 18, 19 above the channels which serve to lock the bottom in place when the side panels are in normal position. The flanged edges of the bottom panel may be cut off at the ends and the ends 21 then bent up to form the end plates of the diffuser. Notches 24 are cut in the top edges of the end plates and the top edges of the side plates are bent over and provided with flanges 25 which are notched to engage the notches of the end plates to lock the structure together. The bottom may be of clear, ribbed material and the sides of opal or coloured material, or all three panels may be of opal material but of varying density. Alternatively the side panels may be with a prismatic profile to reflect the light downwards.
Patent GB-549680-A (GB)
Title: Improvements in and relating to a fluid bottle
IPC: B43L25/10
Filed: 1941-05-26
Abstract: 549,680. Ink bottles. LEWIS, V. H. May 26, 1941, No. 6752. Convention date, March 15. [Class 146 (iii)] [Also in Group XVII] An ink or paste bottle 10 has a separate cavity 22 formed in one or both of its side walls 12 and extending from the bottom of the bottle to open outwards through the top, to accommodate a pen 30 or brush, the bottom surface 20 of the ink &c. reservoir 11 sloping downwardly towards a point in line with the mouth 15. Specification 312,306, [Class 146 (iii)], is referred to.
Patent GB-669102-A (GB)
Title: Safety device for bending presses and the like
IPC: F16P3/14
Filed: 1949-03-14
Abstract: 669,102. Machinery guards. SHARP, D. C. March 13, 1950 [March 14, 1949], No. 6853/49. Class 80 (iv). A movable portion of floor a adjacent a bending press or like machine is supported by sheaves d bearing on spring-tensioned horizontal chains or cables e, e', so that the weight of a person thereon moves the floor and stops the machine. The cables e, e' are anchored at f, f<SP>1</SP>, pass over fixed sheaves g and are tensioned by spring devices j, j<SP>1</SP> which act on levers m, m<SP>1</SP> engaging stop switches o, o<SP>1</SP>. Emergency stop switches n, n<SP>1</SP> are operated if a cable breaks. Fixed stops p engage the upper surface of the floor and links l, l<SP>1</SP> prevent longitudinal movement thereof. In alternative arrangements the tensioners j, j' may disconnect a clutch and apply a brake, or may operate on gearing or on a differential pulley or sprocket to disconnect the drive to the machine. The stop mechanism may be remote from the machine and connected thereto by a cable or other means. Counterbalance weights may replace the spring tensioners and movements of the floor itself may operate the stop switches.
Patent GB-945551-A (GB)
Title: Improvements in and relating to latch mechanisms
Inventor: KRAUSE HERBERT
IPC: E05B65/19
Filed: 1960-02-26
Abstract: 945,551. Latch fastenings. CHICAGO FORGING AND MANUFACTURING CO. Feb. 26, 1960, No. 6918/60. Heading E2A. A latch mechanism comprises a plunger 20 arranged to penetrate an aperture 10 in a latch plate 6 and a latch member 13 mounted on the plate for movement into and out of a latching position where it partially covers the aperture, the plunger carrying a main latch 27 and a safety latch 28 both of which are pivotally mounted on the plunger and are urged by one or more springs into positions where parts of the two latches project from the side or sides of the plunger, the arrangement being such that, with the latch member in its latching position, the main latch and the safety latch retract into the plunger as a result of striking the latch member during penetration of the aperture by the plunger, and thereafter move under the action of the spring or springs into projecting positions where they prevent withdrawal of the plunger from the aperture until the latch member has been moved out of its latching position. In the construction shown in Figs. 2 and 3 both the main latch and the safety latch project from the same side of the plunger. The latch member 13 is in its latching position when the plunger is inserted and the main latch and safety latch are retracted against the pressure of a spring 29 when they pass the latch member 13. After passing the member 13 they move outwardly under the pressure of the spring and latch the plunger in place. The main latch has an elongated pivot hole which permits upward and downward movement of the latch along the inner surface of the wall 21 of the plunger. A slot 35 is formed in the main latch 27 and has a serrated upper edge 37. A pin 38 penetrates the slot 35 and while the plunger is moving through the aperture 10 the latch is moved upwardly to bring the serrations 37 out of engagement with the pin 38; hence there is no resistance to inward movement of the latch but as soon as the latch moves outwardly again the serrations 37 engage the pin 38. In this construction to release the plunger the member 13 is rotated by means of a handle 15 so that its end clears the aperture 10; the plunger can then be moved through the aperture without the latches having to be retracted into the plunger. In a modification the main latch is as in the above embodiment but the safety latch is hook shaped and protrudes from the plunger on the opposite side to the main latch; it is urged outwardly by a coil spring and has a separate integral operating handle by which it must be retracted before the plunger can be withdrawn from the aperture 10.
Patent GB-939395-A (GB)
Title: Sorption pump apparatus
IPC: H01J9/38
Filed: 1962-02-22
Abstract: 939,395. High vacuum pumps. VARIAN ASSOCIATES. Feb. 22, 1962 [Feb. 27, 1961], No. 6977/62. Class 8(1). The hermetically sealed and refrigerated absorbent-containing casing 11-13 of a vacuum pump of the sorption type is provided with internal heat conducting axially and radially extending metal fins 18 each contacting the inner wall of the casing body 11 which is surrounded by a bath of liquid nitrogen 23, Fig. 3 (not shown). The absorbent material e.g., charcoal is thereby more quickly cooled. An outlet tube 14 has flanges 15 for connection to a system to be evacuated and brand which is normally closed by a stopper 16 which is removed to allow passage of warm regenerating gas.
Patent GB-1516488-A (GB)
Title: Hospital beds
IPC: A47C21/00
Filed: 1977-02-18
Abstract: 1516488 Hospital beds F X KEANE 18 Feb 1977 [4 March 1976] 07058/77 Heading A4J A locking device for an oscillating hospital bed of the kind described in Specification 1176843, comprises a pin insertable into any one of a plurality of apertures 52 in a stretcher supporting structure 12 to lock the structure at a desired angle, and a micro-switch 200 which controls the current supply to the electric motor which oscillates structure 12, the micro-switch being operated by an arm 201 so that the current is switched off when the pin engages an aperture, as shown, and is switched on when the pin is disengaged Fig. 2 (not shown).
Patent GB-115507-A (GB)
Title: Improvements in Button Clasps.
Inventor: RUSS FRIEND AUGUSTUS
IPC: A41F11/04
Filed: 1917-05-17
Abstract: 115,507. Russ, F. A., and Stuart, H. J. May 17, 1917. Stocking-suspender grips.- The button tape D covers both the front and rear faces of the base 2 of the button member, is of a width greater than the greatest dimension of the base, and is gripped at one end between the base and a headed elastic sleeve 8 which forms the button head and is forced on to a wire stud 3 secured to the base. The stud 3 is first passed through an aperture 11 near one end 12 of the tpae and this end is doubled over as shown, and the other end 14 is passed round the base through the suspension loop B and over a bar G of the button loop C, and is then secured to the folded end 12 by stitching 15.
Patent GB-875752-A (GB)
Title: Refrigerating and gas-liquefying plant and method
Inventor: MORRISON WILLARD LANGDON
IPC: A23L3/36
Filed: 1960-02-29
Abstract: 875,752. Refrigerating. LIQUEFREEZE CO. Inc. Feb. 29, 1960, No. 7114/60. Class 29. In apparatus in which liquid nitrogen is supplied to a transportable storage con tainer 5 from a receiver 2 and the vaporized nitrogen from container 5 flowsthrough pipe 6 to a compressor-condenser unit 1 supplying liquid to the receiver, make-up gaseous nitrogen is supplied to the compressor inlet. The inlet and outlet pipes 3, 6 of the container are disconnectible therefrom and include valves 4, 7. Some nitrogen is thus lost from the system each time a fresh container is connected. A compressor 13 forces air through coolers 15A, 17 and 11 to a separator 20 from the top of which gaseous nitrogen passes to the inlet of the main compressor through pipes 21, 12. Liquid oxygen from the bottom of separator 20 effects cooling in echanger 17 and is vented to atmosphere or recovered for use. Exchanger 15A is air- or water-cooled. Exchanger 11 is cooled by evaporation of liquid nitrogen tapped from pipe 3 through pipe 9, the resulting gas passing through pipe 12 to the compressor inlet. The makeup system includes a purifier 15B and a purging device 8 is located in pipe 6.
Patent GB-1450265-A (GB)
Title: Semiconductor temperature sensor
IPC: G01K7/01
Filed: 1974-02-15
Abstract: 1450265 Semi-conductor devices RCA CORPORATION 15 Feb 1974 [22 Feb 1973] 7127/74 Heading H1K A semiconductor temperature sensor comprises a body 12 of semiconductor material having a region 18 of uniform resistivity, and means for supporting the body 12 and making electrical contact to the region 18 comprising cantilevered beam leads 26 connected to spaced apart areas of the region 18. The region 18 is grown epitaxially, is framed by an opposite conductivity type region 20 which defines the resistance of the region 18, is 1 to 20 microns thick, and has a resistivity between 0.5 and 5 ohm cm. The leads 26 are adhered to an oxide coating 25 and contact the region 18 through openings therein and are supported on an insulating housing so as to define a gap in a recess 40 for fluids whose temperature is to be measured to circulate. The body 12 may be Si and the leads 26 may include successive layers 28, 30, 32 of Ti, Pt or Pd, and Au, and a Au reinforcing layer 34.
Patent GB-1451454-A (GB)
Title: Sewing machine stitch length regulators particularly for the  manufacture of footwear
IPC: D05B27/18
Filed: 1973-02-14
Abstract: 1451454 Sewing machines; links LAMBERT HOWARTH & SONS Ltd 13 Feb 1974 [14 Feb 1973] 7143/73 Heading D1G When a hand lever 13 is moved sideways it moves a second lever 12, and thus through links 7 and a third lever 5 the knob 3 in the slot 4 to adjust the stitch length. The effective length of the links 7 may be adjusted by moving the pin 8' along the slot 11 and then tightening the knurled nob 8 again.
Patent GB-635137-A (GB)
Title: Improvements in thermionic valve circuits
IPC: H03K23/82
Filed: 1947-03-14
Abstract: 635,137. Pulse frequency-dividing circuits. LAWS, C. A., and BUCKINGHAM, J. March 14, 1947, No. 7161. [Class 40 (vi)] A pulse frequency-divider or counting-down circuit comprises a triggered relaxation oscillator circuit having a stable and an unstable state and a feed-back circuit including a capacitor which is charged up by the change to the unstable condition and which upon reversion to the stable state prevents further triggering of the circuit until this charge has leaked away. Fig. 1 shows a cathode-coupled flip-flop circuit in which triode A2 is normally conducting and A1 cut-off. When a positive-going pulse is applied at terminal A the circuit changes to the unstable state with triode A1 conducting and A2 cut-off, the potential rise at the anode of triode A2 charges capacitor C3 and the anode of diode V2, and thus grid g1 is driven negative to such an extent that on reversion to the stable state after a period determined by the timeconstant of network C2, R6, VR2, further incoming positive pulses at A do not trigger the flip-flop until capacitor C3 has discharged through resistors VR1 and R2. The circuit may thus be used as a frequency-divider, the dividing ratio of which is set by the timeconstants of networks C2, R6, VR2, and C3, R2, VR1. Fig. 3 shows a modification in which the build-up time of the pulse produced at the anode of triode A2 is reduced by means of diode V3 and resistor R7, so that when the potential of anode A2 rises diode V3 is cut-off and capacitor C3 only slowly charges through resistor R7. Where a high dividing ratio is required an additional diode V4 may be used to prevent the potential of grid g2 from rising above earth potential thus retaining the stabilizing effect of resistor R5 on the standing current through resistor R4 and ensuring that the pulse at anode A2 is of constant amplitude.
Patent GB-453158-A (GB)
Title: Improvements in and relating to interlocked electric switches
IPC: H01H9/26
Filed: 1935-03-07
Abstract: 453,158. Locking switches. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and GRAHAM, D. H., 52, Green Lane, TAYLOR, H. J., 57, Wyken Avenue, and SAYERS, E., The Avenue, Whitley, all in Coventry. March 7, 1935, No. 7181. [Class 38 (v)] Two switches having concentric spindles provided with operating handles 6, 9 and contact members 7, 12, cannot be simultaneously moved " on " owing to a pin-andstot connection 10, 13 limiting their relative rectilinear movement. From the position shown, the handle 6 can be pressed in so as to bring the contact 7 into engagement with fixed contacts 5, or the handle 9 can be pulled out to bring the contact 12 into engagement with the fixed contacts 4. A spring 8 in either case returns the parts to their original position when the handle is released. In a modification, Fig. 2 (not shown), the handle 6 can also be rotated to select a particular pair of contacts. This prepares a pair of circuits one or other of which is then completed by rectilinear actuation of the handle 6 or 9.