baber/WOPTO huggingface dataset:
Patent GB-924046-A (GB)
Title: Improvements in or relating to the screening of substances which have a tendency to become electrostatically charged
IPC: B03C1/00
Filed: 1960-06-24
Abstract: Pulverulent material, e.g. plastic powder, which has a tendency to become electrostatically charged, is screened in a screening box within which the atmosphere is at a temperature of 5-50 DEG  C. and has a relative humidity of from 95-100%, the material being supplied to the screen at a lower temperature, e.g. of from 0.5-5 DEG  C. below the stated temperature.
Patent GB-1316604-A (GB)
Title: Catalyst for sulphuric acid contact process
IPC: B01J21/16
Filed: 1970-05-08
Abstract: 1316604 Oxidation catalysts BAYER AG 8 May 1970 [23 May 1969] 22322/70 Heading B1E [Also in Divisions C1 and G1] Supported catalysts are produced by suspending a silica-containing filler and a clay mineral in a stable aqueous silica sol, mixing the resulting suspension with an aqueous suspension of hydrated magnesium oxide, dispersing the resulting gellable mixture in a waterimmisible liquid and recovering solid beads, drying the beads, hardening them for at least 10 min. at a temperature in excess of 500C, treating with an acid, washing, impregnating with an alkali metal vanadate solution and drying the impregnated beads, the beads being heated for at least 10 min. at a temperature in excess of 400C either after the acid treatment or after the impregnation. The silicacontaining filler is an amorphous silica containing 5-10 wt % CaO and having a specific surface of 40-80 m<SP>2</SP>/g obtained by slow acidulation of an alkali metal silicate solution containing a calcium salt.
Patent GB-1269162-A (GB)
Title: Tubular heat-exchanger
IPC: F28D7/02
Filed: 1970-05-08
Abstract: 1,269,162. Tubular heat exchangers. CARLZEISS-STIFTUNG, [trading as JENAER GLASWERK SCHOTT & GEN.]. 8 May, 1970 [14 May, 1969], No. 22339/70. Heading F4S. A tube nest 6 comprising a plurality of coil elements each wound in the form of a double spiral and made for example of glass or plastics material, is disposed in a casing 6 and fluid is conveyed to and from the tubes by way of inlet and outlet ducts 1, 2 extending centrally through the casing and through the tube nest with their longitudinal axes colinear or parallel to one another. Where the ducts 1, 2 pass through the casing wall they are sealed thereto by packings 7. The ducts 1, 2 may be arranged side-by-side as shown, or end to end. The casing 6 which may be in separable parts made e.g. of glass, is filled by the tube nest two elements 3a, 3b of which are indicated. One end of each coil connects to the inlet duct e.g. at 4a, 4b; and the other end thereof connects to the outlet duct e.g. at 5a, 5b. The external fluid enters and leaves the casing through connections 8. There may be a plurality of the ducts 1, 2. Baffles or fluid deflectors e.g. of plastics material may be mounted in the casing.
Patent GB-443565-A (GB)
Title: Improvements in pumps
IPC: F04B43/107
Filed: 1934-08-01
Abstract: 443,565. Momentum apparatus for raising liquids. GILKES & GORDON, Ltd., G., and CREWDSON, E., Kendal, Westmorland. Aug. 1, 1934, No. 22396. [Classes 102 (i) and 102 (ii)] A chamber 6 in a borehole 1 is connected by a pipe 2 to a pump 5. A foot valve is provided in the chamber 6 and a flexible chamber 8 is supplied with gas under pressure. The chamber 8 has a surrounding metal cage or is lined with inextensible material so that the chamber cannot expand beyond a predetermined limit. Upon a downward stroke of the pump 5, the liquid in the pipe 2 is compressed and on the upward stroke it expands and flows from the outlet 3 and draws liquid in through the foot valve.
Patent GB-998701-A (GB)
Title: Improvements in or relating to methods and apparatus for closing or sealing containers
IPC: B21D51/32
Filed: 1963-06-05
Abstract: 998,701. Seaming. ALUPAK A.G. June 5, 1963 [June 5, 1962], No. 22432/63. Heading B3J. A method of closing a container 1, made of thin sheet material, e.g. aluminium along a rim flange extending around the opening thereof by means of a covering foil 5, for example less than 0.05 mm. thick, or a transparent synthetic material which is laid on a flat inner area 3<SP>11</SP> of the flange the outer area of which forms an upright flange area 3<SP>1</SP> comprises placing the filled container with a cover therein on a carrying plate 7 located within a lifting plate 10 on which is mounted a coaxial spring 12 biased thrust ring 11 slidable within an upsetting ring 37 and raising the plate 10 via a push-rod 9 so that the ring 11 engages and lifts the container by engaging its outer diameter and the underface of the flange 3<SP>11</SP> into engagement with a coaxial plate 16 which holds the cover foil against the flange. Continued raising of the assembly lifts the plate 16 and brings the flange 3<SP>1</SP> into contact with a pair of freely rotatable flanging rollers 21 mounted on brackets 23, adjustable on a belt-driven pulley 25, which initially substantially flatten the flange 3<SP>1</SP> over the cover and deflect the sandwiched flanges and cover about the ring 11, Fig. 3, and press the flanges by means of annular undercut projections thereon into an annular groove of the ring 11. When the upper end of the plate 16 mounting shaft 19 abuts an adjustable stop 36 continued upward movement depresses the ring 11 against springs 12 thereby causing the ring 37 to further compress the joint against the rollers. In an embodiment (not shown) a cylindrical press ram surrounding the plate 16 and working in conjunction with a counter ring surrounding the rings 11 and 37 is lowered to effect flanging in the same sequence as above. During the final operation the ram engages and depresses the plate 16 to effect final compressing of the joint against the ring 37.
Patent GB-1163357-A (GB)
Title: Improvements in or relating to cocking devices for Automatic Firearms
IPC: F41A7/04
Filed: 1967-05-15
Abstract: 1,163,357. Cocking device for automatic firearms. RHEINMETALL G.m.b.H. 15 May, 1967 [28 June, 1966], No. 22521/67. Heading F3C. A cocking device for an automatic firearm comprises an hydraulically operable member, for example, a dog 8, which co-operates with the breech block 4 of the firearm as by a dog 6 to move the same in an axial direction. The member 8 is arranged on an actuator 7 which is guided for movement in a direction parallel to the direction of movement of the breech block 4. The actuator 8 is mechanically attached to a piston (13, Figs. 3, 4, 6, not shown) working in a double-acting hydraulic cylinder mounted in side-by-side relation to the actuator in a direction parallel to the axis along which the actuator 7 is guided. In the construction shown the mechanical attachment comprises a pair of sheathed wire cables 17 each passing over a pulley 16 mounted on a lug 14 and one connected to each end of the piston. The lugs 14 which are welded one to each end of a base element 10 which contains the actuator 7 are secured to the cradle 1 of the firearm. The sheathed wire cables pass one through each end of the cylinder and are slidably sealed therein by polished eyes and sealing rings (Fig. 5, not shown). The cables are connected to the piston and actuator 7 by passing the cable ends through centrally apertured screws, providing a soldered nipple on the cable ends and screwing the screws into the piston and actuator (Fig. 6, not shown). The cables are also connected at least to the actuator in a longitudinally adjustable manner. The double-acting cylinder is secured to the base element 10 by a pair of clamps (Fig. 3, not shown).
Patent GB-304747-A (GB)
Title: Windows for motor cars and other vehicles
IPC: B60J1/17
Filed: 1928-08-07
Abstract: 304,747. Tassel, L. H. Aug. 7, 1928. [A. Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 28, 1929]. Window holders for sliding sashes. - Flexible sliding windows for road vehicles having fixed tops or hoods are opened by sliding them upwardly into fixed channel guides 8 in the hood, said guides comprising a curved member 10 in which is housed a helical spring 11 engaging a pressure plate 12 bearing on the edge of the cellu. loid window 4 and serving to hold it in any adjusted position. The front pillar 5 comprises a channel similar to that in the hood joined to the windscreen pillar 15 by means of an integral strip 13, and the rear pillar 7 is similar to the front but secured to the hood frame. The middle pillar 6 is mounted by means of a bracket 35 on a hinged arm 36 and is extended by a spring 37 against a knob on an extension of the arm. The arm 36 is pivoted at 41 to one member of the hinge 43 and when the windows are open it may be swung upwardly to the hood by first freeing it from the body or projection thereon and subsequently hinging it on the pivots 41, 43. The celluloid panels have metal bands secured to the upper and lower horizontal edges, said bands extending if desired into the guide channels. The lower metal band 29 is enlarged at 30 to engage a lip 33 on a weathering strip 31 on the body. The vertical edges of the celluloid may have thin metal strips secured thereto. Handles 34 are provided on both sides of the member 29. Other forms of holder such as spring strips secured to the curved channel member may be used.
Patent GB-741851-A (GB)
Title: Draught and weather excluder for bottoms of doors and windows and the like
IPC: E06B7/20
Filed: 1953-08-19
Abstract: 741,851. Draught excluders. AVES, H. Aug. 17, 1954 [Aug. 19, 1953], No. 22821/53. Class 20(3). A sliding draught-excluder applied to the bottom of a hinged door is readily adapted for doors hinged at either edge and allows for obstruction on the floor such as a rug or carpet. As shewn, Fig. 1, a case 1 which is attached to the bottom of the door, not shewn, is grooved to receive a push-rod 12, spring 14 and fixed block 13. A rebate 5, Fig. 5, in the lower end of the case' is provided for the slidable shutter bar 2 which has a sealing strip of rubber 4 secured thereto. Two pairs of bell-crank levers 9, 10, housed in recesses in the case 1 are pivoted to the case 1, have slotted lower portions pivotally engaging screws in the shutter bar 2 and have holes in their upper ends. As shewn these holes are unused in the case of levers 10 but are used to pivotally secure the levers 9 to the push rod. The spring 14 normally maintains the bar 2 raised but on closing the door the projecting end of a threaded screw is moved inwardly thus causing the push rod to move to the left and through levers 9 the bar 2 is moved downwardly. Should there be an obstruction on the floor the threaded screw and plate 16, Fig. 7, which carries it, are moved inwardly against the action of spring 15, the plate 16 having prongs 17 which slide in slots 18 in a U-shaped member attached to the push rod 12. To adapt the draught excluder for doors of opposite hand, the push rod 12, spring 14 and block 13 are removed and inserted from the opposite end and the push rod 12 pivotally secured to levers 10 instead of levers 9. A central guide plate 11 fixed to the case 1 is slotted to receive a guide screw on the shutter bar 2.
Patent GB-591465-A (GB)
Title: Improvements in and relating to rotatable electric switches
IPC: H01H19/56
Filed: 1944-11-17
Abstract: 591,465. Mechanical switches without quick action. MUIRHEAD & CO., Ltd., and LISTER, W. C. Nov. 17, 1944, No. 22854. [Class 38(v)] The rotatable switch-member 8 comprises a tube, or, as shown, a segment of a tube, which carries contact studs 10 having shanks 11 extending within the member 8 to be interconnected by soldered leads as required. The studs are engaged by spring contacts 5 secured by fillets 3, on a frame, in end-members 1, 1a of which the member 8 is mounted by means of trunnions 6, 6a, one of which carries a grooved collar 12 to be engaged by a spring-controlled positioning ball 15. The rotation of member 8 is limited by fixed pins, engaging a pin on the collar. The Specification refers also to a pair of stud-carrying segments assembled together in tubular form.
Patent GB-285747-A (GB)
Title: Improvements in turbines driven by the exhaust from internal combustion engines
IPC: F02C6/12
Filed: 1927-09-01
Abstract: 285,747. Bernstein, S. Sept. 1, 1927. Jet-wheels; plant.-A turbine comprising two discs mounted on a shaft and connected by curved blades, and having curved blades secured to the outer sides of the discs, is driven by the exhaust gases of an internal combustion engine, a triple nozzle directing the gases on to the blades.
Patent GB-888749-A (GB)
Title: Method and apparatus for controlling the blending of liquids
IPC: G01N27/06
Filed: 1959-07-03
Abstract: 888,749. Determining physical qualities of materials; resistance measurement. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. July 3, 1959 [July 23, 1958], No. 22940/59. Class 37. [Also in Group XL (c)] In a method of blending a liquid hydrocarbon or other liquid having a specific resistance greater than 10<10> Q cm. with one or more additions to increase the conductivity and reduce electrostatic charging, the conductivity is measured with the aid of a measuring cell, a direct voltage source and a measuring instrument comprising a D.C. amplifier having a measurement mode and a drift connection mode in which the drift voltage is stored in a capacitor which is connected to the input during the measurement mode. The conductivity between two concentric electrodes E1, E2 immersed in the test liquid is determined by measuring the current flowing between the electrodes when a voltage is applied from battery B. The effect of surface leakage is is minimized by the guard ring E3. The electrodes are connected to the amplifier via a double screened cable. The contacts of a switch S1 are set to position 1 to provide a rest period in which capacitor C is charged with the output drift voltage from the cathode circuit of valve P2. When S1 contacts are set to position 2 the output of battery B is connected to the test electrodes and the charge on capacitor C provides drift correction. The liquid resistance is proportional to the value of the feedback resistor R divided by the indication of the instrument M1. The gain is increased by positive feedback between the cathodes of the two valves. Specification 620,140 is referred to.
Patent GB-676790-A (GB)
Title: Improvements in or relating to straight bar knitting machines
IPC: D04B15/94
Filed: 1949-09-05
Abstract: 676,790. Knitting-machines. WILDT & CO., Ltd., BARSBY, E. S., and SAUNDERS, A. P. Aug. 18, 1950 [Sept. 5, 1949], No. 22948/49. Class 74 (ii). The racking screw 6 for moving the narrowing points 11 of a straight-bar machine has limiting mechanism associated with it to limit its movement and to prevent over-racking of the points in the event of incorrect timing. The limiting mechanism which only operates upon excess movement of the racking screw comprises a finely screw-threaded sleeve 76 rigidly secured to a bracket 21, carrying part of the narrowing mechanism, the sleeve 76 having a correspondingly internally-threaded nut 77 mounted on it which is engaged by an arm 80 attached to a driving shaft 19 geared to the screw 6 so that the nut is rotated with the racking screw. Ratchet-wheels secured to the shaft 19 are actuated by pawls to rotate the shaft. The nut 77 has lugs 78, 79, one of which, in the point of over racking of the screw 6, engages, towards one end of the traverse of the nut, an arm 86 so as to pivot the block 84 in which it is mounted and to cause a second arm 83 in the block to engage a pin 85 extending from a projection 25b of one of the pawls 25 operating the ratchet-wheels, thereby rendering the pawl inoperative and preventing further movement of the racking screw. Similarly, the other lug engages an arm 89 in a pivoted block 88 carrying a second arm 87 adapted to contact a pin 90 in a projection 26b of a second ratchet 26 for rotating the screw 6 in the opposite direction and to render it inoperative upon excessive movement of the racking screw in this direction.
Patent GB-1469721-A (GB)
Title: Tilting ladle
IPC: B22D41/04
Filed: 1975-05-23
Abstract: 1469721 Tilting ladle COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 23 May 1975 [28 May 1974] 23000/75 Heading F4B A tilting ladle for treating and casting metal comprises a tubular member 1 with a tubular extension 2 at one end for use as a filling spout, and a tubular extension compartment 3 at the other end containing a gate 4 for controlling the contact of molten metal with a reactive substance that may be introduced into the compartment 3 through a stopper 5. The ladle may be made of thick sheet metal and is lined with refractory concrete. For treating cast iron with magnesium, coke impregnated magnesium is fed into the compartment 3 and the stopper 5 closed. The operator inclines the ladle about the axis 17 by means of a drive motor 14 at the required rate, so that the cast iron runs through the gate and contacts the magnesium-impregnated coke. The gate 4 may be disc-shaped with three axially-extending peripheral passages, Fig. 3 (not shown), or may be disc-shaped with a blind part (35) and a tunnel (36), having a canopy (37),  Fig. 4 (not shown).
Patent GB-1330046-A (GB)
Title: Producing composite photographic images
IPC: G03B17/12
Filed: 1971-04-19
Abstract: 1330046 Composite photography EASTMAN KODAK CO 19 April 1971 [4 March 1970] 23063/71 Headings G2A and G2C In the making of a tamperproof identification card on which the image of a person 2 occurs at a different magnification to that of the image of a data card 3, the two images are each superimposed with backgrounds which are arranged to give a substantially continuous background on the final card, Fig. 2A (not shown). Photographic film 1 in a camera 4 is exposed via an objective 6 to the images of a data card 3 superimposed on the image of a transparency 8 bearing a particular background pattern. A mirror 20, receiving light from the person 2 and from a second transparency 17 bearing the particular background of pattern, is positioned within the field of the objective 6. The transparency 17 is imaged via a semi reflecting mirror 12 on to a retro-reflective screen 10. Light reflected from the screen 10 and from the person 2 is reflected by the mirror 12 through lenses 13, 14 to the mirror 20. Since precise alignment of the separate background images may be too time consuming, a blurred transition zone can be produced between the separate background images. The mirror 20 is appropriately spaced from the lens 6 to achieve this blurring. A lamp 19 may be provided to illuminate the person 2 and the card 3. The means for producing the images of the person and the card together with the respective backgrounds can be supported in a detachable housing 22.
Patent GB-360432-A (GB)
Title: Improved brushing or cleaning device
IPC: H01T21/04
Filed: 1930-07-31
Abstract: 360,432. Decarbonizing devices. THORPE, T. E., Astor House, Aldwych, London. July 31, 1930, No. 23154. [Class 99 (ii).] A device for mounting in a cylinder wall of an internal-combustion engine in place of the sparking plug for decarbonizing the piston and cylinder comprises a brushing or scraping element 4 carried by a flexible or balljointed member 6 secured to a cranked shaft 3 which can slide and rotate in a tubular mount 2 adapted to be screwed into the cylinder wall in place of the sparking plug. A tubular extension may be provided on the mount 2 within which the cleaning or scraping element may be withdrawn against a stop screw 6a. More than one cleaning element may be provided on the shaft 3, which may alternatively, be driven by spur or bevel gearing instead of by the crank handles. Solvent or cleaning composition may be fed to the interior of the cylinder through the mount 2.
Patent GB-780714-A (GB)
Title: Improvements in or relating to herbicidal compositions containing carbamic acid esters and preparation thereof
Inventor: STRAIN FRANKLIN
IPC: A01N47/20
Filed: 1953-12-25
Abstract: A method of preparing an isopropyl N-chlorophenyl carbamate by reaction of an isopropyl haloformate and a chloroaniline in the presence of a hydrogen halide acceptor comprises establishing a liquid body containing the chloroaniline and simultaneously and individually adding the isopropyl haloformate and the hydrogen halide acceptor to the liquid body under such conditions of temperature and pressure that reaction takes place.  Isopropyl chloroformate is generally used, although bromo, fluoro and iodoformates and mixtures of these are referred to. Chloroanilines mentioned are o-, m- and p-chloroanilines, 2,3- and 2,5-dichloroaniline, 2,4,6-trichloroaniline and tetra-and pentachloroanilines.  The reaction may be effected in the presence of solvents, e.g. of specific gravity 0.8 or 1.2, such as carbon tetrachloride, chloroform, ethylene dichloride, perchloroethylene, benzene, xylene, toluene, or acetone. Reaction temperatures of 0 DEG  to 15 DEG  C. are suitable.  In examples: (1) isopropyl chloroformate and excess aqueous sodium hydroxide are added simultaneously to m-chloroaniline kept at 0 DEG  to 10 DEG  C., the isopropyl N - 3 - chlorophenyl carbamate obtained being washed in benzene solution with hydrochloric acid; (2) excess isopropyl chloroformate and excess sodium hydroxide are added to a mixture of m-chloroaniline and water.  The product is extracted with perchloroethylene and treated with additional isopropyl chloroformate to reduce the amount of m-chloroaniline impurity; (3) a similar large-scale reaction is effected, additional sodium hydroxide and isopropyl chloroformate being added until no chloroaniline is present, the product being washed in solution with hydrochloric acid followed by distillation of the perchloroethylene.
Patent GB-882766-A (GB)
Title: Crystalline polyvinyl formate and highly crystalline polyvinyl alcohol derived therefrom and methods of producing the same
IPC: C08F18/24
Filed: 1960-07-05
Abstract: Crystalline polyvinyl formate and polyvinyl alcohol produced therefrom are made by polymerizing vinyl formate at a temperature of 30 DEG C. or below.  These polymers have a very low 1,2-glycol content and degree of swelling in water and may be heat-treated, e.g. at 180 DEG C. to reduce the degree of swelling further.  The polyvinyl alcohol may be formed into films, fibres and moulded products.  The polyvinyl alcohol may be partially acetalized, e.g. to yield the formal.  The vinyl formate may be polymerized in solution in methanol, methyl formate or acetone or in bulk, in the presence of catalysts such as ayo-bis-isobutyvonitrile, benzoyl peroxide and triethyl boron, or triethyl boron alone and in the presence of oxygen and acetaldehyde.  The polymerization may be stopped by adding a small quantity of hydroquinone or m-dinitrobenzone and the polymer may be precipitated by petroleum ether and purified by reprecipitation from acetone solution.  The polymer may be saponified to polyvinyl alcohol in aqueous dioxan and both products may be drawn to orient the fibres produced.
Patent GB-697430-A (GB)
Title: Process for the production of nicotinic acid esters
IPC: C07D213/803
Filed: 1951-10-09
Abstract: The invention comprises esters of nicotinic acid with monoalkyl, ethers of ethylene glycol containing 2-6 carbon atoms in the alkyl group or monoaryl or monoaralkyl ethers, or with monoalkyl, monoaryl or monoaralkyl ethers of diethylene glycol, and their preparation by reacting nicotinic acid, or the anhydride or halide thereof, with a monoether of ethylene glycol or diethylene glycol; or by ester interchange between an alkyl ester of nicotinic acid and a glycol monoether.  The reactions may be carried out in the presence of an organic solvent, e.g. benzene, toluene or carbon tetrachloride and dehydrating or acid binding agents.  In examples there are prepared the nicotinic acid esters of propyl, butyl, phenyl and benzyl, ethylene glycol monoethers and ethyl and butyl, diethylene glycol monoethers.