baber/WOPTO huggingface dataset:
Patent GB-273206-A (GB)
Title: Sound reproducer
IPC: H04R7/20
Filed: 1927-02-18
Abstract: 273,206. Brandes Laboratories, Inc., (Assignees of Staunton, Le R. W.). Feb. 18, 1927. Loud-speakers; diaphragms.-Sound-reproducing apparatus comprises an actuating-device 4, a -cone-shaped diaphragm 6, a connection between the actuating-device and the diaphragm serving to support the diaphragm, a mounting-plate 3 in which the peripheral edge 8 of the diaphragm is free to float, and four or other small number of strip-like members 10, 12 of rubber, felt, or other soft material, which do not function in the soundreproducing process, spacing the edge of the diaphragm from the edge of the aperture and serving solely as centring means. The strip-like members are secured to the front of the mounting- plate and to the rear or convex side of the diaphragm.
Patent GB-305946-A (GB)
Title: Manufacture of cellulose ethers
IPC: C08B11/16
Filed: 1929-02-11
Abstract: 305,946. I. G. Farbenindustrie Akt.- Ges. Feb. 10, 1928, [Convention date]. Cellulose ethers.-Alkyl ethers of cellulose containing 1.5-2.5 alkyl groups per molecule of cellulose and resistant to the action of water, are obtained by employing in the alkylation up to 2 molecules of an aralkvl halide for every 10-30 molecules of the alkylating-agent per molecule of cellulose. The alkylation must be conducted under such conditions of temperature and pressure that the formation of free acid is avoided. In an example, pasteboard is soaked in 50 per cent caustic soda solution, pressed, ripened for a short time, and then treated with ethyl chloride and a small quantity of benzyl chloride; the product is soluble in alcoholbenzene.
Patent GB-470351-A (GB)
Title: Improvements in or relating to apparatus for rectifying alternating currents
IPC: H02M7/06
Filed: 1936-02-15
Abstract: 470,351. Automatic control systems. GENERAL ELECTRIC CO., Ltd., and DUNHAM, C. R. Feb. 15, 1936, Nos. 4643 and 7524. [Class 38 (iv)] - Frequency; e.m.f.-Comprises an arrangement in which a D.C. circuit is supplied from an A.C. circuit through a transformer operating at saturation and a full wave rectifier. The material used for the core of the transformer is of the kind which saturates at a very low value of magnetizing force such as, e.g. that known under the Registered Trade Mark " Mumetal." This arrangement enables a constant voltage D.C. to be obtained even though the A.C. voltage varies, and also enables a D.C. voltage which varies with frequency on the A.C. side to be obtained. The second effect is employed in an arrangement shown in the drawing accompanying the second Provisional Specification, for maintaining the speed of a motor generator set constant. A motor 2 fed from a D.C. circuit 24, 25 drives an alternator 1 which supplies an A.C. circuit 14, 15. A saturated transformer-rectifier circuit 3 is connected to 14, 15, and gives a voltage across a resistance 34 proportional to the frequency of the alternator. A further saturated-transformer-rectifier circuit 4 is connected to an A.C. source 47, 48 of constant frequency and gives across a resistance 44 a constant voltage. The resistances 34, 44 are connected in series-opposition in the grid circuit of a valve 5 which controls the operation of a gas-discharge valve 6 connected across part of the resistance 23 in the field circuit of the motor 2. Variation of the frequency will thus alter the bias on the grid of valve 5 and through the valve C alter the field of the motor 2 to effect speed correction. The operating frequency can be adjusted by means of a tapping 49 on resistance 44. Commutation of the valve 6 is effected by means of the secondary 63 of a transformer supplied from an A.C. source. Specification 441,704 is referred to. Reference has been directed by the Comptroller to Specifications 315,844, 336,716, [both in Class 38 (iv)], and 389,811.
Patent GB-490532-A (GB)
Title: Improvements in or relating to the colouration of textile fabrics
IPC: D06P5/12
Filed: 1937-02-16
Abstract: Colour effects are produced upon pile fabrics by dyeing the pile fibres before or after applying locally to such fibres agents causing only the tips or only the portions other than the tips of the fibres to be coloured by the dyestuff.  Thus a chemical or mechanical resist or an agent adapted to alter the chemical character of the tips, e.g. an esterifying or saponifying agent, may be applied to the tips before dyeing the fibres or such fibres may first be dyed throughout their length and an agent for producing a white or coloured discharge be applied thereafter to the tips.  In all cases undyed portions of the pile fibres may be separately dyed a colour different from that used in the main dyeing operation.  The agent may be applied to the tips (a) by smooth or engraved plates or rollers carrying the agent and contacting lightly with the pile surface, (b) through a silk or other screen, or (c) by a wick supplied with the agent. Alternatively, the portions of the pile fibres other than the tips may be treated with a suitable agent, e.g. by application from the back of the fabric.  In examples; (1) the cotton backing of a fabric having a cellulose acetate pile is first dyed with Diazo brilliant blue BBL developed with b -naphthol, the pile is then raised by brushing and upon it is pressed a layer of cellulosic material impregnated with caustic potash solution, where-upon the fabric is steamed, rinsed in dilute acid, washed and treated with a soap bath dispersion of 1 4-dimethylaminoanthraquinone; the saponified tips of the pile fibres remain undyed while the unsaponified portions are dyed blue; (2) the cotton backing of a similar fabric is similarly dyed and an aqueous paste containing caustic potash and British gum is applied to the tips of some of the pile fibres by printing from an engraved roller, the fabric is dried, hung for several hours in a warm dry atmosphere and rinsed with dilute acetic acid, washed and the pile fibres other than the saponified tips are dyed with 1-methylamino-4-ethanolaminoanthraquinone; (3) the brushed-up regenerated cellulose pile of a fabric having a cotton backing is placed in contact with a regenerated cellulose film coated with paraffin wax, the whole is passed through a hot calender to transfer the wax to the pile fibre tips, the fabric is dyed with Chlorazol fast red KS, immersed in hot water to remove the wax, dried and finished; (4) a fabric having a cotton backing is dyed in a bath at 75-80 DEG  C. containing Glauber salt, Chlorazol black LF (for the cotton) and p-aminobenzene-azo-dimethylaniline (for the cellulose acetate) and washed, the dyeing is diazotized and developed with 2 : 3-hydroxynaphthoic acid to obtain a black dyeing throughout and an aqueous paste containing gum tragacanth, glycerol, thiodiglycol and zinc formaldehydesulphoxylate is then applied by brushing to the fibre tips to discharge the dyeing therefrom.
Patent GB-765147-A (GB)
Title: Improvements in and relating to overhead doors
Inventor: HALLETT FRANK EDWARD JOHN
IPC: E05F15/16
Filed: 1955-02-16
Abstract: 765,147. Door-operating apparatus. WESTLAND ENGINEERS, Ltd. Feb. 16, 1955, No. 4656/55. Class 65 (1). An overhead door guided by rollers running in vertical tracks 6 and horizontal tracks 9 is operated by an electric motor 1 through an endless cable attached to the door at 5 and passing over pulleys at 4, 8, 7 so as to have an inclined portion 12 and a substantially vertical portion 14. In the arrangement shown, the portion 3 of the cable is constituted by a chain passing over a sprocket driven by the motor through worm gearing, and the pulleys at 4, 7 are carried by spring tensioning-devices. The roller running in the track 9 actuates adjustable limit and reversing switches connected by a rod 10, and the motor is started by a switch operated by a key or a pressure-pad or by a form of radiation. The motor drives through a clutch which slips if movement of the door is obstructed. The door is counter-balanced by weights attached to cables passing over pulleys. A solenoidoperated fastening is provided, the solenoid being energized when power is applied to the opening field of the motor 1.
Patent GB-1390003-A (GB)
Title: Filter
IPC: B01D27/10
Filed: 1973-01-31
Abstract: 1390003 Disposable filter PUROLATOR FILTER GmbH 31 Jan 1973 [3 Feb 1972] 4914/73 Heading BID In a filter (e.g. oil filter for an hydraulic installation) having an annular filter element 3 in a cup shaped housing 1 a pressure relief valve (by-pass valve) and a non return inlet valve are formed by an annular resilient valve ring 6 (e.g. of rubber or rubber-like plastics) one lip 20 of which seals the inlet holes 14 in the cover 2 against return of fluid and a second lip 21 of which normally covers aperture(s) (not shown) in an annular sleeve 10 connected to the outlet 12 yields to allow by-pass flow with excess pressure.
Patent GB-827551-A (GB)
Title: Improvements in motion picture projection apparatus
Inventor: MOIR JAMES
IPC: G03B21/50
Filed: 1957-02-13
Abstract: 827,551. Kinematograph apparatus. &c. BRITISH THOMSON-HOUSTON CO. Ltd. Feb. 13, 1958 [Feb. 13, 1957], No. 4942/57. Class 97(1) A roller carries two insulated electrically conducting rings 4, 5 intended to be bridged by a conductive trace on the film, the rings being separated by a space 8 which exhibits a projection other than a straight line normal to the axis of rotation so that the space cannot remain in register with a longitudinal film scratch. The space may be sinuous as shown, or lie in a plane inclined to the axis. It may be an air space or be filled with insulating material.
Patent GB-232379-A (GB)
Title: Improvements in and relating to wireless receivers
IPC: H04B1/08
Filed: 1924-02-27
Abstract: 232,379. Eintracht, S. J. Feb. 27, 1924. No Patent granted (Sealing fee not paid). Receiving sets, construction of; crystal detectors.-The casing of a receiving set is formed to represent an animal, and a moving limb d or limbs controls the tuning by varying the position of a coil f relatively to a second coil h. The crystal cup is mounted on an arm sliding through a ball-jointed support, and the crystal makes contact with the animal's whiskers or with other fixed members. External connections are made by means of binding-screws' or eyelet holes. Specification 227,194 is referred to.
Patent GB-765325-A (GB)
Title: Improvements in or relating to the printing of envelopes and the like
Inventor: RANDALL JOHN WILLIAM
IPC: B41F9/01
Filed: 1955-02-21
Abstract: 765,325. Printing processes.-DICKINSON & CO., Ltd., J. Feb. 21, 1955, No. 5148/55. Addition to 739,378. Class 100(2) The method of printing over the entire area of an envelope or the like disclosed in the parent Specification is modified in that the printing is confined to a part only of the whole area, the printed part abutting one or more edges of the envelope or the like. The apparatus described in the above Specification may also be modified by replacing the intaglio printing surface by a relief printing surface.
Patent GB-395985-A (GB)
Title: Improvements in or relating to tele-cinematograph and like transmitters
IPC: H04N3/38
Filed: 1933-02-20
Abstract: 395,985. Television. TELEFUNKEN GES. FœR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Feb. 20, 1933, No. 5208. Convention date, Feb. 20, 1932. [Class 40 (iii).] A cathode ray 2 is deflected along a line on a fluorescent screen 4 to produce light which is projected through a kinema 'film 6 to a light-sensitive cell 7, the film is moved to provide the second tomponent of scanning, and means are provided for moving the fluorescent screen in its own plane in the tube 1, so that the part of the screen, on which the line is scanned, can be changed.
Patent GB-845649-A (GB)
Title: 6-deoxytetracycline and 6-deoxyoxytetracycline
IPC: C07C/
Filed: 1958-02-18
Abstract: The invention relates to 6-deoxytetracycline and 6-deoxyoxytetracycline having the formula:-  <FORM:0845649/IV(b)/1> wherein R1 is hydrogen or hydroxy and the 4-epimers thereof, their salts with an acid or a base and complexes with salts of aluminium, magnesium and calcium.  The 6-deoxytetracyclines are obtained by catalytically reducing by hydrogen tetracycline, chlortetracycline, bromtetracycline or oxytetracycline or the 4-epimers thereof in a solvent solution in the presence of a substance which forms a chelate ring with a peridioxygenated hydronaphthalene, e.g. boric acid, boron trifluoride and other boron trihalides, aluminium salts such as chloride and magnesium salts such as acetate.  In the case of tetracycline and oxytetracycline one mole hydrogen is used in the reduction and in the case of chlortetracycline and bromtetracycline two molecules of hydrogen are used.  The reduction is carried out at temperatures of 0-100 DEG C. and preferably at room temperature to 50 DEG C. and at hydrogen pressures of 1/2 to 100 atmospheres. The catalyst may be a metal of the platinum family especially 5% palladium hydroxide on charcoal.  Specified solvents are water, dioxane, glacial acetic acid, 2-ethoxyethanol, ethyl acetate and a mixture of water and dimethylformamide (1:1) containing perchloric acid, which is the preferred solvent.  The 4-epimer of 6-deoxytetracycline (6-deoxyoxytetra-cycline) is prepared by allowing a concentrated aqueous solution of 6-deoxytetracycline (6-deoxyoxytetracycline) to stand at pH 3 to 5 and preferably 3,5 to 4,5 for 1 to 7 days.  A suitable solvent is methanol, ethanol, butanol, acetone, 2-ethoxyethanol, 2-methoxypropanol, glacial acetic acid, tetrahydrofuran, dimethylformamide and mixtures thereof.  A suitable buffer is sodium dihydrogen phosphate.  Acid salts are prepared by treating the 6-deoxytetracycline with an acid such as hydrochloric, sulphuric, phosphoric and trichloroacetic acids at a pH below 4.  Alkali metal and alkaline earth metal salts are prepared by treating the 6-deoxytetracycline with a base such as sodium, potassium, calcium or barium hydroxide at a pH above 6,0.  The free 6-deoxytetracycline is obtained from a solution of a salt by adjusting the pH to 4 to 6.  6-deoxytetracycline aluminium gluconate complex is obtained by treating an aqueous solution of 6-deoxytetracycline with aluminium gluconate.
Patent GB-452288-A (GB)
Title: Improvements in or relating to shoe bottom pressing
IPC: A43D35/00
Filed: 1935-02-19
Abstract: 452,288. Boot - making machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., and RICKS, F., Union Works, Belgrave Road, Leicester. Feb. 19, 1935, No. 5265. [Class 17 (i)] Lasts; sole-laying and levelling.-To facilitate the supporting of a shoe for operations involving pressure against the soles without defacement of the toe portion of the upper, the making last is divided into two parts of which one extends the whole length of the shoe and is divided from a removable part of the last along a surface that includes at least two substantially plane portions at an angle to one another, the removable part of the last being substituted by a support in the machine, which support has a shape complementary to that of the main part of the last. As applied to a shoe support of the kind described in Specification 185,202, [Class 17 (i)], the cradle described in that Specification, for supporting the fore-part of the last, is substituted by a member 16 shaped with two or more plane portions 20, 21 corresponding to a removable instep portion of the last, these plane portions being covered with felt. A levelling form 30 may have a spring plunger 28 to urge the heel end of the last downwardly while the work and form are rocked relatively during the levelling operation. Specifications 107,614, [Class 17 (i)], and 408,953 also are referred to.
Patent GB-231641-A (GB)
Title: Improvements relating to liquid fuel lamp and similar burners
IPC: F23D3/00
Filed: 1924-03-03
Abstract: 231,641. Jones, A. C., (trading as Messenger & Sons), and Kirby, A. March 3, 1924. Annular wick burners. - A separate tubular section is loosely mounted with a limited free movement on the upper end of the central draught tube so as to align itself under the action of the wick in a truly axial position relative to the upper end of the wick tube. In the form shown the upper end of the central draught tube 5 is reduced in diameter to permit the selfaligning section 7 to fit over it and be capable of limited lateral displacement. Inwardly projecting pins 8 on the section 7 engage holes or slots 5b in the upper end of the tube 5 to prevent detachment of the section. The wick carrier 9 is so arranged that a considerable portion of the wick extends above it.
Patent GB-1358472-A (GB)
Title: Method and apparatus for bundling rod beam or tube lengths
IPC: B65B27/10
Filed: 1972-02-04
Abstract: 1358472 Bundling rods &c. NORBERGS MEK VERKSTAD AB 4 Feb 1972 5413/72 Heading B8C Rod, beam or tube lengths 19 are bundled by feeding the lengths by means of a conveyer 17 to a bundling device in which they are formed into a tightly packed bunch of substantially circular cross-section, by means of a sling 6 extending transversely of the bunch, the bunch then being banded with bands or wire and then discharged by the conveyer 17 which simultaneously feeds more lengths into the device. As shown, the device consists of a pair of jaws 2 pivoted about shafts 3 in a head 4 which is movable vertically in guide 24 by means of a telescopic device 5. The jaws support the slings 6 extending over pulleys 7 and 13 respectively carried by the jaws 2 and by arms 21 pivoted to the head 4, the arms 21 being operated by hydraulic cylinders 22 to tension the slings 6 around the lengths 19 as the head is raised by the device 5 and as the jaws 2 are moved towards each other by an hydraulic cylinder 14 to raise the bundled lengths above conveyer 17 provided with sections 16 accommodating the lengths. The bundled lengths are then banded, mechanically or manually, and thereafter lowered on to a vertically movable weighing frame 23 situated to the outside of the conveyer and supported by the head 4 by links 10, one of which is controlled by an hydraulic cylinder 12. When more than two jaws are used, all forward and rearward jaws and the corresponding arms 21 are linked by transverse tubes (25) and (26), Figs. 12 and 13 (not shown).
Patent GB-1536364-A (GB)
Title: Measuring apparatus
IPC: G01B11/00
Filed: 1976-02-11
Abstract: 1536364 Measuring apparatus DR JOHANNES HEIDENHAIN GmbH 11 Feb 1976 [11 Feb 1975] 05416/76 Heading G1M A linear measuring apparatus comprises a measuring scale mounted within an elongated rigid protective housing 10 and a sensing device disposed within the housing for co-operation with the scale, the housing having resilient flexible connections with a member and the sensing device being attached to another member for measuring the relative position of the two members. The flexible connections may be angle brackets 18 at each end of the housing having a hinge formed by a groove 20. The sensing device may be connected to the other member by an element guided between flexible sealing lips 21, 22. Other details of the apparatus are as described in Specification 1536365.
Patent GB-692570-A (GB)
Title: Apparatus for producing solutions of pre-determined dilution
IPC: G01N1/38
Filed: 1950-03-03
Abstract: 692,570. Mixing appliances. BOLT, A. P. June 4, 1951 [March 3, 1950], No. 5479/50. Class 86 Apparatus for producing solutions of predetermined dilution comprises a flask 18 carried at the free end of a pivoted arm 2 which is adapted to pivot about a vertical pillar 3 through a segment of a circle and to be returned by a spring to its original position against a buffer a predetermined number of times to agitate the solution, after which, in automatically controlled sequence, the flask inverts to drain out a predetermined amount of the solution and returns to the normal position to receive a predetermined quantity of diluent from a funnel 22, the whole operation being repeated automatically a number of times determined by a counter 32. The driving and control mechanism includes a shaft 10 continuously rotated by gearing from an electric motor (not shown). The shaft 10 drives through gearing a shaft 5 which carries a sleeve 4a having an eccentric roller 4 engaging the arm 2, through which the rocking motion is imparted to the arm. The sleeve 4a is clutched to the arm for ten revolutions, the clutch being operated by a cam carried by the shaft 10. The shaft 10 also carries a cam 28 which operates a valve 24 in the funnel 22 for controlling the supply of diluent to the flask 18 and also has a partially toothed gear wheel 11 which co-operates with a partially toothed gear wheel 17 on a shaft 15 (not shown) on which the flask 18 is mounted, by means of which gearing and shaft the flask is inverted and returned to an upright position in the desired sequence.
Patent GB-557043-A (GB)
Title: Improvements in or relating to tubular containers for electrical condensers
IPC: H01G2/12
Filed: 1942-04-27
Abstract: 557,043. Paper tubes electric condensers. SPORING, P. A., and TELEGRAPH CONDENSER CO., Ltd. April 27, 1942, No. 5593. Drawings to Specification. [Class 99 (ii)] [Also in Group XXXVI] A paper tubular casing of an electric condenser made by winding has one or more convolutions of metal sheet or foil incorporated in the convolutions of paper. Strips of metal foil may be gummed to the paper strip before it is wound in such a way as to produce an overlap of the metal strip and one or more layers of paper between the metal layers.
Patent GB-839665-A (GB)
Title: Improvements in or relating to fuzes for projectiles intended to spin in flight
IPC: F42C15/26
Filed: 1958-02-20
Abstract: 839,665. Ammunition fuzes. JUNGHANS, H., and JUNGHANS A.G., GEB. Feb. 20, 1958 [Feb. 20, 1957], No. 5609/58. Class 9(1) A direct action percussion fuze for spinstabilized projectiles comprises a two-part casing 10, 11 housing a striker 12, a firing pin 13 and a percussion cap 14 together with a centrifugally released safety device for locking the firing pin. The safety device comprises a piston 15 housed in a cylindrical recess 10a and supporting a spiral member 16 enclosing four balls 17 and a plate 18 fitted loosely around the pin 13. A plate 20 held in place by the casing has an abutment 19 pressing on the balls 17 and a spring 24 supports the piston, which is provided with a guide flange 15b and a circular rib 15c bearing on a spiral member 21. The member 21 surrounds a bushing 22 having a slot housing a safety catch 23, which engages a collar on the firing pin. After firing the projectile, the spiral member 16 due to the centrifugal force produced by the spin moves outwards until it bears against the wall of the recess 10a and when the balls 17 have moved beyond the abutment 19, the spring 24, thrusts the piston 15 forward and so releases the member 21. Member 21 then unwinds and the catch 23 releases the pin 13 leaving the fuze armed for operation on impact. A self-destruction device Z operated by decreasing spin may be provided on the plate 20 and comprises a lever Z 1  locking a spring-stressed striker member Z 2 . The lever Z 1  is moved by centrifugal force to release the striker Z 2 , which is then driven against a ring Z 4  on the pin 13. In a modification, the balls 17 are replaced by segments which form a core for the first spiral member. The piston is given a conical under-surface. which bears against the sloping upper surfaces of ring segments taking the place of the spring 24. On release of the piston by the first spiral member, the ring segments move outwards and push the piston forward to release the second spiral member as before. In Fig. 8, the piston is replaced by a bell-shaped member 50 having a cylindrical hub 50a separated from an abutment 51a on plate 51 by a locking member 54, the hub 50a and abutment 51a being used as the core of two spiral members 52, 53 functioning as the member 16 in Fig. 1. The bushing 22 housing the pin locking member 23 is the core of a spiral member 55 on which rests a sheet metal bridge 56 serving as abutment for a spring 57 urging the bell 50 forwards. Arms 50b on the bell project through slots in the bridge to restrain the member 55. The members 52, 53 may be replaced by a single member of inwardly decreasing width.