baber/WOPTO huggingface dataset:
Patent GB-578389-A (GB)
Title: Improvements in and relating to the electrodeposition of metals and alloys
IPC: C25D5/00
Filed: 1944-04-04
Abstract: 578,389. Electroplating. MALLORY METALLURGICAL PRODUCTS, Ltd. April 4, 1944, No. 6221. Convention date, March 11, 1943. [Class 41] [Also in Group II] In electroplating processes, the anode is used in a "semi-polarized" condition, i.e., the current density is raised to a value such that the surface becomes bright and the voltage ceases to be proportional to the current. This is done in order to prevent insoluble particles of the anode from falling into the electrolyte, to which corrosive ions are added to aid dissolution of the anode. A brightener is also added to produce a bright surface on the cathode. Examples given of the use of this anode are lead-plating, lead-silver alloy plating, silver plating, copper plating and copper-lead alloy plating. In each case the cathode is degreased and then electrolytically cleaned in an alkaline bath. Details of the composition of the electrolytes, the anode and cathode current densities, the intensity of agitation of the electrolyte, and the temperature of the latter are given for each process. A tapered anode is used because the anode surface area in contact with the solution is very small compared with that of the cathode and must be kept within limits to control accurately the extent of the deposit. The brightener used is a hydroxy-benzene, such as pyrogallol ; the corrosive ions vary with the anode used, e.g., with lead anodes, potassium tartrate is added to the electrolyte, and with silver anodes, potassium cyanide is used. The anode 12 which is supported loosely by insulating sleeve 22, which allows it to settle into the solution as it is dissolved rests on a perforated plate 14. The electrolyte 11 is agitated and circulated by a pump 17 driven by motor 19. The cathode 15, connected to the battery through covered conductor 18, also rests on plate 14. In depositing alloys an anode of each metal is used, Fig. 3 (not shown), the surface area of each subjected to the action of the electrolyte being proportional to the composition of the alloy desired, which may also be controlled by the position of the anodes with respect to the cathode and by variation of the currents through them. Alternatively, a composite anode, Fig. 5 (not shown), may be used, wherein the chief constituent of the allov forms the core of the anode, the lesser being formed around the core. Fig. 6, shows a modification of the anode sub-assembly, in which the anodes 65, 66 are clamped in an insulating yoke 67, the tip of anode 65 resting on plate 68. A means of introducing an anode in the side of the bath wherein the anode passes through a sealing ring and is fed into the bath by a spring is described with reference to Fig. 7 (not shown).
Patent GB-463011-A (GB)
Title: Improvements in thermionic tubes
IPC: H01J19/30
Filed: 1936-03-02
Abstract: 463,011. Thermionic valves. FARNSWORTH TELEVISION, Inc. March 2, 1936, No. 6264. Convention date, March 13, 1935. Drawings to Specification. [Class 39 (i)] In a thermionic valve a grid-in particular a space charge grid-is in the form of an inductance and of a material giving a high skin effect so that high resistance is offered to highfrequency currents to reduce the effective capacity between the grid'and other electrodes. The wire may be of nickel-iron-cobalt alloys, such as perm alloy, having a high permeability ; it may have a roughened surface. In another form, the wire is formed with a core of insulating material, such as glass fibres, with a coating of colloidal graphite. The Specification as open to inspection under Sect. 91 also describes a valve wherein the grid wires were carried on the usual support rods. This subject-matter does not appear in the Specification as accepted.
Patent GB-879544-A (GB)
Title: Improvements in high pressure hydraulic pumps or motors and rotating seals for use in such pumps
Inventor: THOMA OSWALD
IPC: F01B3/00
Filed: 1958-02-26
Abstract: 879,544. Liquid-pressure engines. UNIPAT A. G., and DOWTY HYDRAULIC UNITS Ltd. Feb. 20, 1959 [Feb. 26, 1958; Dec. 11, 1958], Nos. 6273/58 and 40018/58. Addition to 824,945. Class 69 (2). [Also in Groups XXVI and XXVIII] The hydraulic balancing means between the rotating cylinder block 1 and valve plate 22 of the motor of the parent Specification is modified by including in its sealing means (Group XXVI) a restricted flow passage, all other features of the motor being identical with what is described in the parent Specification.
Patent GB-716119-A (GB)
Title: Improvements in or relating to the colouring of aluminium and its alloys
Inventor: SIMMONS JOHN GILBERT
IPC: C25D11/24
Filed: 1951-03-15
Abstract: 716,119. Ornamenting. UNITED ANODISING, Ltd. Feb. 14, 1952 [March 15, 1951], No. 6304/51. Addition to 645,443, [Group XXXVI]. Class 93 [Also in Group XXXVI] A brown or bronze colour is produced on aluminium having an absorbent oxide coating, for example, an anodic coating, by immersion in a solution containing a compound of iron capable in contact with the aluminium oxide of depositing ferric oxide therein and containing one or more polyhydroxy phenolic compounds having two or more hydroxyl groups attached to the benzene nucleus and also containing a suitable stabilizer; the ferric hydroxide is precipitated and toned simultaneously. Phenolic compounds containing three adjacent hydroxyl groups per benzene nucleus are preferred; suitable compounds are pyrogallic acid, gallic acid and ethyl gallate. Rufigallic acid may be used with one or more of the above. The stabilizer may be an alkali metal or ammonium salt of oxalic acid or malonic acid or an alkyl substituted malonic acid. The iron is preferably present as a compound with the acid radical of the stabilizer, but ferric chloride, nitrate, or sulphate or ferric alum may be used if desired. The proportion of iron to stabilizer in the solution should be 1-2 atoms of iron to 3 molecules of stabilizer. The proportion of iron to phenolic compound should be 1-3 atoms of iron to 1 active hydroxyl group. Thus where the phenolic compound is of low solubility, the concentration of iron in the solution must be correspondingly limited. The pH of the solution should be maintained at 4.0-7.0 and the temperature at 60-90‹C. The coating. may be sealed after colouring by immersion after rinsing in a solution containing 0.5 per cent nickel acetate at 70‹C for three minutes and transference to water at 90‹C for ten minutes.
Patent GB-288135-A (GB)
Title: Improvements in or relating to kinematograph and like screens and a process of making same
IPC: G03B21/60
Filed: 1928-02-29
Abstract: 288,135. Zaidan Hojin Rikagaku Kenkyujo. March 31, 1927, [Convention date]. Drawings to Specification. Projection screens.-A plate of dark coloured glass &c. is coated with a thin layer of gelatine &c. on which crystals are deposited. The crystals may be of ammonium manganous phosphate or ammonium cobaltous phosphate or both, or of stannic sulphide &c., and may be deposited by placing the plate at the bottom of a tank containing water in which they are suspended, a grid being used above the plate to render the deposition uniform. The finished surface may be coated with transparent varnish, lac, collodion, gelatine or gum, and the gelatine may be hardened with formalin or chromium compounds. An ordinary glass plate coated with gelatine containing pigments such as lamp black, prussian blue, &c., or containing colloidal colouring- matters such as nigrosine, may be used as the base, and the gelatine may be replaced by glue, casein, starch paste, gums or agar agar. The glass plate may be replaced by a metallic plate, by a wooden plate soaked with water-proofing material, or by stuff expanded on a frame and treated with lac or rubber solution. The crystals may be applied to the base by painting on to it a paste containing them or by printing- with an ink containing them.
Patent GB-409261-A (GB)
Title: Improvements relating to automatic machines for the bulk weighing of flour and like materials
IPC: G01G21/00
Filed: 1932-12-07
Abstract: 409,261. Confining dust on generation. SIMON, Ltd., H., and BRIAN, J. C., Bird Hall Lane, Cheadle Heath, near Stockport. Dec. 7, 1932, No. 6578/34. Divided on 411,174. [Class 8 (ii).] In apparatus for the bulk weighing of flour and like materials, the issue of dust clouds during discharge through the door at the bottom of the weighing receptacle j is checked by the provision of a fixed hood 16 which surrounds but does not touch the receptacle, the ring 19 on the hood co-operating with parts 17, 18 on the receptacle to provide a tortuous path. The hood is fitted with an air vent 20 which is of large discharge capacity or is provided with means to prevent the issue of dust clouds therethrough into the atmosphere.
Patent GB-497080-A (GB)
Title: Hair treating device
IPC: A45D4/08
Filed: 1937-03-05
Abstract: 497,080. Hair - curling appliances. BELLEFONTAINE, H. L. March 5, 1937, No. 6583. Void. Convention' date, March 6, 1936. [Class 131] A heating-clamp 15 for use in hair-curling processes is carried from the heating-apparatus to the hair by a detachable handle 25 having prongs 29 engaging bores 19 in the clamp jaws so as to separate them when the finger grips 27 are pressed together against the pressure of a spring 31. The clamp jaws are normally held closed by a C-spring 21 engaging grooves 22 in the jaws. In a modification, Fig. 7, the detachable handle 42 has jaws 43 gripping within ribs 37 formed on the clamp jaws 34.
Patent GB-1400142-A (GB)
Title: Extruder
IPC: B29C48/67
Filed: 1974-02-13
Abstract: 1400142 Screw means HERMANN BERSTORFF MASCHINENBAU GmbH 13 Feb 1974 [16 Feb 1973] 6603/74 Heading BIC [Also in Division B5] A screw extender for homogenising and mixing thermoplastics and rubber has in the grooves of the screw flow-resisting elements as at 6, 7, 8, 9 and openings in the lands of the screw as at 2a, 3a, 4a disposed so that the trailing edge of each opening lies in the normal to the groove which passes through the centre of an adjacent flow-resisting element, the cross-sectional area of the opening being equal to that part of the area of the groove which is obstructed by the screw. As shown, the effect is to repeatedly subdivide the flow in the groove into partial flows round and over the obstructions and through the openings, the partial flows being combined in a different combination. The flow-resisting elements are cylindrical or cubical or rhomboidel in cross-section; in the latter cases two edges are disposed along the groove and are chamfered. The elements may be pre-shrunk and then engaged in holes to be an interference fit.
Patent GB-439416-A (GB)
Title: Improvements in or relating to water softening apparatus
IPC: C02F1/42
Filed: 1934-03-01
Abstract: 439,416. Softening water. KERRISON, O. C., Windsor House, Kingsway, London. March 1, 1934, No. 6617. [Class 46] Regeneration of a baseexchange water softener a is started automatically on fall of pressure in the softener due to the opening of a simple singleported valve f on the outlet to drain and softening is restarted when the valve is closed. The fall of pressure is communicated to the upper side of a diaphragm p<3>, Fig. 2, which rises to close a valve p<4> in the connection between the hard water main c and the softener. The hard water then flows through a restricted passage p<5> in the valve stem and is directed into a Venturi element k, suction being created by injector action to draw brine through a connection i<3> from a tank b. The flow of brine is under control of a valve r, having a port h, Fig. 3, with two associated valve members h<1>, h<2> on a spindle h<3> attached to a diaphragm g<1>. Suction in the connection i<3> and a passage i causes downward movement of the diaphragm and spindle so that the member h<2> moves away from the port h and brine is drawn through passages i<2>, i and the connection i<3> to the softener, the downward movement of the spindle being arrested by the engagement of a stirrup m, Fig. 4, fixed to the spindle, with a cylindrical cam n. When a definite amount of brine has been drawn from the tank b, a float o therein has rotated the cam n, so that a projection m<1> on the stirrup m can engage a depression or groove n<1> in the cam and the spindle can move further so that the member h<1> closes the port h. The flow of brine then ceases and the baseexchange material is washed. When the valve f is closed the valve p<4> opens and softening commences. Some hard water passes through the connection is to the brine tank b, the valve member h<1> being opened by a spring g<2> when the suction due to injector action at k ceases. When sufficient make-up water has been supplied to the tank b, the float o has turned the cam n so that a projection m<2> on the stirrup m engages a groove n<2> on the cam and the spindle h<3> can rise so that the valve member h<2> closes the port h. The grooves n<1>, n<2> may be inclined and the cam n arranged to be slidable axially so that the periods for which the valve r remains open can be varied. The cam n may be rotated mechanically during a given time interval instead of by a float and piston valve members may be provided instead of the members h<1>, h2.
Patent GB-613100-A (GB)
Title: Improvements in or relating to stapling machines
IPC: B25C5/16
Filed: 1945-09-29
Abstract: 613,100. Hand stapling-machines. QUICK, T., and QUICK, S. Sept. 29, 1945, No. 6624/48. Divided out of 613,031. Drawings to Specification. [Class 89 (iii)] The Specification describes the stapling-machine described in Specification 613,031 and claims the channel-shaped, movable, abutment member which ' forms the front and sides of the driving guideway. Specification 613,095 also is referred to.
Patent GB-392501-A (GB)
Title: Improvements in or relating to permutation locks
IPC: E05B37/02
Filed: 1931-12-30
Abstract: 392,501. Permutation locks. DONOVAN, A. M., The Lawns, Upminster Road, Hornchurch, Essex. Dec. 30, 1931, No. 6672/33. Divided on 389,478. [Class 44.] In a permutation lock having a draw-bolt 9 locked by rings 4, the locking rings are retained by a member 7 having a bolt 8 and a nut 10 so formed that it cannot be removed without previously removing the lock-bolt 9. As shown, the nut 10 has serrations with one or other of which the bolt 9 engages, and the bolt 8 also serves to connect the lock to a supporting bracket 3. The lock shown has a backplate 5, setting pointers 6, and other details of construction similar to those described in Specification 389,478.
Patent GB-341763-A (GB)
Title: Electric reversing switches
IPC: H01H25/06
Filed: 1930-03-01
Abstract: 341,763. Snap-action switches and controllers for motor-driven tools &c. CHICAGO PNEUMATIC TOOL CO., 6, East 44th Street, New York, U.S.A.- (Assignees of Meunier, L. F. and Dresser, C. J. ; 1241, East 49th Street, Cleveland, Ohio, U.S.A.) March 1, 1930, No. 6809. Convention date, March 2, 1929. [Classes 38 (iii) and 38 (v).] Compound movement of handle.-A switch, specially adapted for use with portable electric tools, is moved " on " and " off " by rotation of a shaft and into " reversing " position by longitudinal movement of the shaft. For this purpose, the shaft 11, which has fixed to it a handle 12, has a U-shaped slot 11a engaging a fixed pin 13 and carries contacts 25, 26 which can engage fixed contacts 18, 19 or 19, 20 according to the longitudinal position of the shaft. The pin and slot arrangement prevents the switch from being " reversed " before it has first been brought into the " off " psoition. The contacts 25, 26 are mounted on a carrier which can rotate on the shaft 11 and the carrier has a projecting portion 33 connected by a pin 34 and compression spring to a pin 35 mounted in ears 11c on the shaft 11. Rotation of the shaft 11 by the handle 12 moves the pin 35 counterclockwise, Fig. 5, and the pin 34 and its spring move over dead-centres but clockwise rotation of the portion 33 of the contact-carrier does not take place till the pin 34 moves in again so as to be clear of a projection 37.
Patent GB-180761-A (GB)
Title: Improvements in or relating to the manufacture of cotton voile fabrics
IPC: D02H13/00
Filed: 1921-03-03
Abstract: 180,761. Orr & Sons, Ltd., J., and Johnson, C. March 3, 1921. Yarns specially treated, fabrics with; yarns, warping and beaming. - Cotton voile fabrics are made from yarn previously dyed in the cheese. In order to prevent the yarn from becoming slack during the beaming operation, the cheese d, Fig. 1, is carried on a barrel c loosely mounted on a creel peg a having a flange b, a spring e having a flange f being interposed between the end of the barrel and the flange b, and the peg being mounted in bearings. After beaming, the yarn is maintained under tension by felt-covered rods g, Figs. 3 and 4, carried by spring clamps i engaging the warp-beam flange j.
Patent GB-671501-A (GB)
Title: Improvements in or relating to a sanding attachment for a motor
Inventor: JONES ELMER WILLIAM
IPC: B24D9/08
Filed: 1950-03-21
Abstract: 671,501. Rotary abrasive tools. WATSON, R. D., and SHAPIRO, J. March 21, 1950, No. 6996/50. Class 60. A sanding attachment for a motor comprises a backing plate having an interiorly screwthreaded socket through its rear face adapted to fit on the end of a motor shaft or an adaptor and having a second screw-threaded socket surrounded by a soft pad through the front face, and a slip clutch for holding a polishing disc against the pad, the clutch comprising a stud screwed into the second socket and a friction ring mounted on the stud for engaging the polishing disc and frictionally pressing it against the pad. A rigid backing plate 7 has a hub 8 with a screw-threaded socket 9 at the rear and a, screwthreaded socket 10 at the front with a web 11 between the sockets. The socket 9 fits the motor shaft 12 or an adaptor so that the backing plate may be screwed down on to the end of the motor shaft on top of the round disc or backing plate 13. A thick resilient annular pad consisting of a canvas foundation 14 with woollen pile threads 15 is secured 'to the backing plate, e.g. by cement. The sand paper or emery cloth disc 16 is clamped against the pad by a steel screw stud 17 and a phosphor bronze slip ring 18. The stud screws into the socket 10; the slip ring has a groove 19 to receive the disc 16 and is rotatably mounted on the hub 20 of the stud beneath the flange 21. A stop member 22 may be screwed into the web 11 at the bottom of the socket 10 to limit the seating of the screw stud; the stop member may be removed or replaced by a thinner stop when the pad becomes worn or compressed. The outer face of the stud 17 may have a knurled or roughened surface or a slot to facilitate turning it. In use, disc 16 rotates with the pad but may be controlled by varying the pressure of the disc against the work whereupon the ring 18 slips on the hub of the stud.
Patent GB-611004-A (GB)
Title: Improvements relating to erection devices for gyro-verticals and gyro-horizons
IPC: G01C19/44
Filed: 1942-05-22
Abstract: 611,004. Gyroscopic apparatus. SPERRY GYROSCOPE CO., Inc. May 22, 1942, No. 7026. Convention date, Dec. 7, 1940. [Class 97 (iii)] An erecting device for gyro - verticals comprises an out-of-balance mass free to rotate around a normally vertical axis on the sensitive element, airjet means carried by the mass to exert on the gyro a torque so directed that when the rotor is displaced and the mass consequently gravitates to the low side the air-jet means is so positioned that the torque exerted thereby causes the gyro to be erected and means capable of rendering the air-jet means substantially ineffective to produce precession of the gyro. As shown in Fig. 5, the base of the rotor casing 3<1> carries a rotatable sleeve 231 provided with a weight 28<1> balanced by an air jet issuing from a nozzle 26<1>. A second jet issuing from a nozzle 27<1> situated normally to the nozzle 261 produces an erecting torque when, owing to tilting of the gyroscope the sleeve rotates to the lowest position of the weight 28<1>. A flap 50 obstructs the nozzle 27<1> and puts its jet out of action when the gyroscope is vertical, thus reducing hunting or slight conical precession. In the form shown in Fig. 8, instead of employing two nozzles, a single intermediate nozzle 26 is substituted therefor, and the nozzle together with the outof-balance weight 28 is secured to a sleeve 23 rotatably mounted in air bearings beneath the rotor casing. To render the erecting means ineffective, e.g. whenever the craft makes a turn, the rotatable sleeve 23 (or 231, Fig. 5) is caused to spin by means of air jets impinging axially upon inclined blades 29, the air jets being set in action by the movements of a semicircular cut-off plate rotated by a rate-ofturn gyroscope. These air jets are supplied from a separate source independent of the previously-mentioned jets or of the rotor spinning jets. Specification 542,963 is referred to. The Specification as open to inspection under Sect. 91 comprises also means for spinning the out-of-balance mass whenever the gyro is vertical so as to reduce the hunting or slight conical precession caused by the erecting jet. This subject-matter does not appear in the Specification as accepted.
Patent GB-692978-A (GB)
Title: Improvements in and relating to buffing wheel sections
IPC: B24D13/20
Filed: 1952-03-18
Abstract: 692,978. Polishing buffs. HALL, E. W. March 18, 1952, [July 17, 1951], No. 7027/52. Class 60. A buff section for assembly on a spindle side by side with other similar sections to form a buffing wheel comprises a relatively stiff centre 10 surrounded by an annulus of buffing material 14, one side of the section having axially extending bearing elements 22 at a different radial location from similar elements 24 on the other side so that when the sections are assembled with like sides facing one another as shown in Fig. 3 a relatively distant spacing of the sections is obtained and, when unlike sides are facing one another, as shown in Fig. 4 a relatively close spacing is obtained. To provide closer spacing of the sections when assembled with unlike sides facing one another, the radial separation of the two series of projections 22 and 24 is decreased so that only a partial overlap between them is possible. The projections 22 may be slightly separated circumferentially so that their engagement with a like series of projections occurs at points offset from the tips to prevent relative circumferential displacement between sections.
Patent GB-267313-A (GB)
Title: Improvements in aeronautical propellers
IPC: B64C11/04
Filed: 1926-03-15
Abstract: 267,313. Reed, S. A. March 15, 1926. Screw propellers.-Metal air screws with thin blades are forged with a central boss enlargement, the blades being of such thickness that they would deflect at speeds without the compensation of centrifugal forces. The central boss is formed by hot die forging, the blade portions being finished by cold working. An alloy of aluminium or magnesium is the preferred material. The thickness of the blade at one-tenth the length from the root does not exceed one-fiftyfourth of the length. The boss may be bolted or keyed to the engine shaft direct or may be provided with liner 6 of hard metal keyed by keys 12 to the boss and having keyways 9 and an internal cone 8 for fitting on the coned end of the engine shaft. In a modification, the 'liner has integral fins in place of separate keys which slide in keyways in the boss and when in position are pinned. Specifications 163,714, 199,708, 223,838, and 240,594 are referred to.
Patent GB-216248-A (GB)
Title: Improvements in ski pole rings
IPC: A63C11/24
Filed: 1923-03-13
Abstract: 216,248. Bourne, G. B. March 13, 1923. Sticks.-A metal ring B for a ski-pole A is made of light durable metal, such as aluminium, having an inner ring 11, to which is secured a pin 12 passing through a slot in the pole. The pin 12 may be secured to the ring 11 as shown in Fig. 3, or may take the form of a bolt passing through lugs 14, as shown in Fig. 5. A ferrule 13 may be provided to strengthen the perforated part of the pole.