baber/WOPTO huggingface dataset:
Patent GB-441498-A (GB)
Title: Improvements in or relating to abrasive wheels
IPC: B24D5/06
Filed: 1934-07-21
Abstract: 441,498. Grinding-wheels. REYNOLDS, H., 303, Western Bank, Sheffield. July 21, 1934, No. 21357. [Class 60] A grinding-wheel comprises a spoked wheel having a hub 6, spokes 8 and a rim 10, the side faces 7 of the spokes and the side faces 9 of the rim 10 being formed to lie in cones coaxial with the wheel, with their apices pointing outwards. Abrasive blocks 11 .. 15 of arch-stone shape, located on the rim by keys 17 are secured on the rim by means of clamping- plates 18, held in position by bolts 24, and on each plate 18 are formed an inner projection 20 and an outer projection 21, the projections being straight or curved and having their radially opposed faces inclined to the axis of the wheel ; each plate is of a width to engage the side faces of two blocks 11. The spokes have therein a series of parallel grooves 22, to be engaged by the projections 20, and the blocks 11 have in their side faces a series of parallel grooves 23 to be engaged by the projections 21, the surfaces of the grooves being inclined, so that, on tightening the bolts 24, the inclined surfaces of the projections press the blocks firmly on the rim 10. The plates are initially placed with their projections in the radially outermost grooves, and as the blocks wear, the plates are moved to the next groove to expose fresh surface of the blocks. The sides of the blocks may be flat and the side faces of the spokes and rim of pyramid form, or the side faces of the blocks, spokes, and rim may lie in planes perpendicular to the axis of the wheel. The blocks may be formed with the projections and the plates 18 formed with the recesses.
Patent GB-965835-A (GB)
Title: Improvements in or relating to protective pants and knickers
IPC: A61F5/455
Filed: 1962-06-02
Abstract: 965,835. Napkins. B. WARNER. May 28, 1963 [June 2, 1962], No. 21364/62. Heading A3V. [Also in Division A4] A baby's or adult's protective pants are made partially or wholly of waterproof material, e.g. polythene, and is provided with an outlet 6 to a chamber 14 or a false front of the garment. A triangular, oval or circular resilient apertured member 7, 11 conforming to the shape of the urinary organ of the wearer is held in place on the inner side of the garment by means of straps 8 from the waist and carries a threaded neck 6 for union with the chamber 14. Rear straps 8 carry a detachable flap 20 for holding toilet paper &c. to absorb excreta. A net insert 3 may be provided to ventilate the garment and a non-return valve may be provided in the outlet 6.
Patent GB-713268-A (GB)
Title: Improvements in or relating to apparatus for grinding and/or polishing continuous wire stock
IPC: B24B5/38
Filed: 1951-09-11
Abstract: 713,268. Dashpots. CRUCIBLE STEEL CO. OF AMERICA. Sept. 11, 1951 [Sept. 15, 1950], No. 21365/51. Class 108(3) [Also in Groups XXII and XXIII] Mechanism for reciprocating diamond tools for dressing a pair of grinding wheels (see Group XXIII) comprises a cylinder 180, two pistons 182, 183 therein connected to the tools by the piston rod 187 and actuated by admitting air to one end or the other of the cylinder under the control of valve 190, and a central partition 181 in the cylinder provided with a metering passage 186 for oil disposed between the two pistons and the partition. A valve 186a in the passage 186 determines the speed of the tools. The quantity of oil in the cylinder is maintained constant by an automatic filler 195 which is subject to the pressure of the air in the actuating system.
Patent GB-772808-A (GB)
Title: Chloral derivatives and methods for their preparation
IPC: C07H13/04
Filed: 1955-07-25
Abstract: The invention comprises a hemiacetal of chloral with glucose, 3-methyl-glucose or lactose, said hemiacetal containing at least four chloral groups per molecule.  Such hermiacetals, which contain 4 or 5 chloral groups per molecule in the case of glucose or 3-methyl glucose and 4 chloral groups in the case of lactose are obtained by heating a mixture of the sugar and the required number of equivalents of chloral under anhydrous conditions at the temperature of reflux of chloral from the mixture until the point of constant reflux rate (i.e. the stage at which reflux is at a minimum) is reached and then cooling the mixture.  In Example (1), glucose pentachloral hemiacetal is prepared by refluxing glucose with 5 molecular proportions of chloral at about 120 DEG  C. until the point of constant reflux rate is reached.  Similarly produced are (2) 3-methyl glucose pentachloral hemiacetal; (3) lactose tetrachloral hemiacetal; (4) glucose tetrachloral hemiacetal.ALSO:A therapeutic sedative and hypnotic composition comprises a carrier and a hemicetal of chloral with glucose, 3 - methyl-glucose or lactose, the hemiacetal containing at least four chloral groups per molecule.  The composition may be in the form of capsules, tablets and suppositories with carriers, binders and excipients.  The preparation of the hemiacetals is described (see Group IV(b)).
Patent GB-124713-A (GB)
Title: Improvements in the Manufacture of Pasteboard Cases and in Means therefor.
IPC: B31B50/59
Filed: 1918-12-20
Abstract: 124,713. Pomeon et Fils, A. March 26, 1918, [Convention date]. Cupping or forming.-A paste board box r, Fig. 3, having a projecting flange s at its base is formed by pressing a pasteboard disk into an annular flared die b by means of a composite plunger e, h. During the first part of the pressing operation, the rim of the blank is turned up at right-angles to the body of the blank, the part h of the plunger meanwhile projecting below the part e. The downward movement of the part e continues after that of the part h, and a shoulder on the part h causes the rim of the box to spread out laterally so as to form the flange s. When the plunger rises, springs g restore the part h to its normal projecting position with respect to the part e. In order to remove the finished box from the machine, the die b is removed bodily from a flat-bottomed recess in which it normally lies. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification in which the box blank is first stamped to the form shown in Fig. 5 (Cancelled) and is then placed, with an internal support p, in a mould o. The descent of a plunger n flattens the base t and spreads it out so as to fill a recess d. This sub-- ject-matter does not appear in the Specification as accepted.
Patent GB-1110723-A (GB)
Title: Improvements in or relating to the longitudinal folding and interleaving of web material
IPC: B65H45/08
Filed: 1965-05-20
Abstract: 1,110,723. Sheet folding and interleaving apparatus. R. COUZENS and M. M. YOUNG. 20 May, 1965 [25 May, 1964; 14 Dec., 1964], No. 21411/65. Heading B6H. An apparatus for folding and interleaving web materials which are then cut into sheet lengths for boxing comprises a plurality of web folding and interleaving stations arranged in series adjacent one another and including web roll suspension means 28 . . . 34 . . . Fig. 1 (not shown), from which the respective webs 28<SP>1</SP> . . . 34<SP>1</SP> . . . are unwound and passed over former plates and rollers 40, 68, Fig. 4, to produce a first transverse fold in the webs the folded edges 46, 74 being disposed on opposite sides in respective adjacent stations. The folded webs 32<SP>1</SP>, 34<SP>1</SP> having folded flaps 44, 70, offset with respect to the path of advance and, on opposite sides thereof, are passed over respective rollers 50, 52 and 76, 78, which are staggered axially with respect to each other, and under plates 58, 82 provided with inclined edges such as at 62 the edges co-operating with turning bars 64, 86 which turn the free edges of the webs 32<SP>1</SP>, 34<SP>1</SP> upwardly through 90 degrees. The advancing edges are then engaged by plough plates, such as 88, which turn the free edges on to a superposed prefolded web, to interleave the subjacent web with the superposed one. A plurality of such interleaved webs is adanced by a conveyer 56 over guide roller 20, Fig. 1 (not shown), to a further guide roller 24 at which a further plurality of similarly interleaved webs is juxtaposed and the combined continuous stack is severed into sheet lengths by a cutting device 26 ready for boxing. In the case of 400 interleaved sheets 400 stations are used, 200 in each parallel manufacturing line 12. 14.
Patent GB-439100-A (GB)
Title: Improvements in or relating to carbon sheet holders for typewriting machines
IPC: B41J17/00
Filed: 1935-07-29
Abstract: 439,100. Typewriters. UNITED AUTOGRAPHIC REGISTER CO., 5000, South California Avenue, Chicago, U.S.A. July 29, 1935, No. 21536. Convention date, July 30, 1934. Addition to 422,327. [Class 100 (iv)] Carbon-sheet arrangements.-In manifolding- arrangements comprising, as described in the parent Specification, a movable carbon - sheet holder which is retained in the rear position by releasable locking-means, the locking-means is automatically released by means of the webs. In the apparatus shown in Fig. 1, a bail B<1>, provided with carbon-holding fingers 27 and guides 29 for the webs 28, is pivoted at 23 to a frame 16 having rollers 17 which run on rails 15 secured to a support A<1> forming part of a base-plate A. The typewriter is placed on the base-plate and is positioned by means of laterally adjustable plates 11. The bail B<1> is urged rearwards by springs and normally rests on a yoke 22 and is latched by means of spring-urged arms 30. The frame 16 is coupled to the platen-carriage D by means of laterally adjustable and tiltable arms 19 having cranked ends which enter sleeves 18 and are secured by screws 21, the sleeves being journalled in housings 20 on the frame. A vertically movable slide 35 on the frame 16 is provided with an adjustable cross-bar 38 for engaging the webs, and a finger 40 engaging an arm in connection with the latching - arms 30. When the webs are fed forwards by rotating the platen, the tension depresses the slide 35, the latching - arms 30 are released, and the bail B<1> swings forwardly to permit movement of the carbon sheets with the webs. After a set of forms has been typed, the platen is rotated backwards, the ends of the webs are raised above the crossbar 38 to permit return of the bail and carbon sheets to normal position, and the webs are then pulled forwards. In the apparatus shown in Fig. 4, a trolly B<2>, provided with carbonholding fingers 27 and guides 48 for the webs 28, runs horizontally on a frame 45 secured to the platen-carriage D. The frame is supported by a rail 56 which is secured to arms 57 having sockets 58 for receiving the rear feet of the typewriter. The trolly is urged rearwards by a spring drum 50 and is normally latched by means of an arm 52 which is pivoted on the frame and co-operates with a hook 51 on the trolly, the front end of the arm having a crossbar 54 engaging the webs. The tension of the webs rocks the arm 52 to release the trolly. In another form of apparatus, the carbon-holding fingers are carried by a spring-urged bail which is pivoted at the rear of a frame attached to the platen-carriage, the arrangement of the pivots preventing the bail from being raised by the direct tension of the webs. Raising of the carbon-sheet bail is initiated by means of a yoke which is pivoted on the frame and is provided at the rear with a rod engaging the carbon-sheet bail, and at the front with a rod which is arranged at a higher level than the carbon-sheet bail and engages the webs.
Patent GB-1142166-A (GB)
Title: Electronic time sequence switch
IPC: H01H43/02
Filed: 1966-05-16
Abstract: 1,142,166. Timed switching in electric circuits. MALLORY TIMERS Ltd. May 16, 1966 [July 1, 1965], No. 21583/66. Heading G3T. A step advance mechanism for use in a time sequence switch comprises a motor 11, a rectifier circuit 20, an electronic switch 34, a timing circuit 21 and a cam 37 driven by the motor. The cam 37 is mounted on a shaft 19 and the periodicity of the timing circuit may be adjusted by rotating a shaft 17 of a variable resistor 18. On completion of each period of the timing circuit a unijunction transistor 30 is triggered and supplies a pulse to the electronic switch 34 which comprises a silicon controlled rectifier. The transistor 34 therefore conducts and is held in this state by a capacitor 27. The resistance of circuit 22 thus decreases allowing a large current to flow through and switch on the motor 11. The rotation of the cam closes a switch 36 and the transistor 34 ceases to conduct. The motor, however, continues to rotate until the cam allows the switch 36 to reopen and stop the motor in readiness for the next cycle. Instead of the variable resistor 18 a switch contacting a network of fixed and/or variable resistors may be used or the time interval may be made dependent on the resistance of a temperature sensor.
Patent GB-171140-A (GB)
Title: Improvements in warning horns and the like
IPC: G10K9/18
Filed: 1921-02-22
Abstract: 171,140. Smith, J. F. Feb. 22, 1921. Fluid supply for horns.-A bulb for warning- horns is manufactured with a separate thickened neck part 2 moulded upon a tube 1 designed to be connected with the horn. The body 3 of the bulb is moulded upon the thickened neck part, the inner end of which is flush with and merges into the tapered inner surface of the bulb, the whole being finally subjected to a vulcanizing process.
Patent GB-1342833-A (GB)
Title: Electrically heated toaster
IPC: H03K17/292
Filed: 1971-04-19
Abstract: 1342833 Toasters ROWENTA-WERKE GmbH 19 April 1971 [13 Feb 1970 13 Aug 1970] 21743/71 Heading A4D [Also in Divisions G1 and H3] A timing device for an electrically heated toaster uses an RC circuit to control the toasting time. The direct voltage supply for the control circuit is tapped from the heating element, through rectifier GL and capacitor C 1 . The time taken for capacitor C 2  to reach the threshold potential of PUT, a programmable unijunction transistor, is controlled by resistors R 8 , R 7  and R 1 . The resistance of R 8  is variable by means of a control knob on the outside of the toaster to vary the toasting time. The threshold potential at PUT is controlled by resistors R 5  and R 6  and the temperature sensing resistor NTC (21). This resistor which has a negative temperature coefficient of resistance is placed in an aperture in the wall of the toasting chamber. Thus if the chamber is hot the threshold potential of PUT is lowered resulting in a shorter toasting time. When the threshold potential of PUT is reached PUT is turned on and the resulting voltage drop at R 2  turns on the thyristor which activates the electromagnet Sp (15) and releases the lock on the bread carrier. The residual charge in C 2  is discharged through R 9  and D 2 . In a modification the thyristor is activated by an integrated circuit which responds to the potential of C 2 . The circuits may be housed in ventilated chambers at the end or on the base of the toaster and may have thermal insulation between them and the toasting chamber.
Patent GB-1323647-A (GB)
Title: Photographic mask
IPC: G03F1/00
Filed: 1971-04-19
Abstract: 1323647 Photo-masks INTERNATIONAL BUSINESS MACHINES CORP 19 April 1971 [17 Feb 1970] 21760/71 Heading G2M A photo-mask for preparing semi-conductor integrated circuits comprises a circuit pattern disposed on a borosilicate glass support member. A master mask may be made by a step and repeat camera and used to contact print a submaster which in turn is used to contact print a workplate mask, the 2 masters and the mask all having borosilicate glass supports.
Patent GB-614710-A (GB)
Title: An improvement in or relating to machines for washing and centrifuging textile materials
IPC: D06F37/22
Filed: 1946-07-22
Abstract: 614,710. Washing-machines. BROADBENT & SONS, Ltd., T., and HALLITT, W. July 22, 1946, No. 21761. [Class 138(ii)] [Also in Groups II and XXXII] In a washing machine a rotatable basket b is mounted on a shaft d and oscillation dampers comprising friction members f, g are provided. The member f is attached to a casing c<1>, and the part g, mounted on arms pivoted at h, prevents a tendency of the casing to precess.
Patent GB-710128-A (GB)
Title: Manufacture of chlorinated derivatives of 2, 4-diketochromanes
Filed: 1951-09-17
Abstract: The invention comprises the 3-chloro-3-alkyl - 2 : 4 - diketochromanes, 3 : 3 - dichloro-2 : 4 - diketochromane, the 3 : 31-alkylene-bis-(3 - chloro - 2 : 4 - diketochromanes), the 3 : 31 - alkylidene - bis - (3 - chloro - 2 : 4-diketochromanes) and bis-(3-chloro-2 : 4-diketochromanyl-3 : 31) acetic acid and its alkyl and benzyl esters.  They are prepared by chlorinating the corresponding 4-hydroxy-coumarin with sulphuryl chloride or with free chlorine in carbon tetrachloride.  The 4-hydroxy-coumarins are tautomeric with the 2 : 4-diketochromanes and chlorination by the above methods replaces the mobile hydrogen atom.  If there is no substituent in the 3-position two chlorine atoms are substituted in that position.  In examples there is described chlorination with sulphuryl chloride of (1) 3-ethyl-4-hydroxy-coumarin to give 3-chloro-3-ethyl-2 : 4-diketochromane; (2) 4-hydroxy coumarin to give 3 : 3 - dichloro - 2 : 4 - diketochromane; (3) 3 : 31 - methylene - bis - (4 - hydroxy - coumarin) to give 3 : 31 p  - methylene - bis - (3 - chloro-2 : 4 - diketochromane); (4) ethylidene - bis-(4 - hydroxy - coumarin) to give 3 : 31 - ethylidene - bis - (3 - chloro - 2 : 4 - diketochromane); and (5) the methyl ester of bis-(4-hydroxy-coumarinyl) acetic acid to give the methyl ester of bis-(3-chloro-2 : 4-diketochromanyl-3 : 31) acetic acid.
Patent GB-1153218-A (GB)
Title: Optical System and Method For Producing a Plurality of Substantially Identical Images
Inventor: OLSSON RAYMOND GEORGE
IPC: H01L21/027
Filed: 1967-05-10
Abstract: 1,153,218. Optical diffraction systems. GENERAL ELECTRIC CO. May 10, 1967 [June 17, 1966], No.21814/67. Heading G2J. An optical system for focusing multiple images on a plate P of single object 6 comprises a monochromatic light source and condenser system 2, a diffuser 3, and an array of zone plate gratings on a plate 7. A multiple apertured mask 8 passes only first-order images. The monochromatic source may be an arc light with heat filter 2a and narrow band light filter 2b, or a laser source may be used. The diffuser comprises an etched surface diffusion plate 3b followed by two crossed lenticular plates 3a. The multiple zone plates are produced by etching an aluminium coated glass plate, there being typically 2500 zone plates on a plate 1À57 square inches in area.
Patent GB-1135483-A (GB)
Title: Improvements in the production of laminates
Inventor: KEITH DONALD GEORGE
IPC: B29C44/30
Filed: 1966-05-17
Abstract: 1,135,483. Foam core laminates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 8 May, 1967 [17 May, 1966], No. 21816/66. Heading B5N. A method of making a laminate having a core of foamed plastics material 9 sandwiched between and bonded to two outer facing materials 6 and 7, comprises providing two co-operating substantially parallel conveying surfaces 1 and 2 forming within supporting platens 3 and 4 an extended longitudinal nip 5, one of said platens being movable on a vertical plane relative to the other, continuously maintaining said platens substantially parallel to each other and at a substantially constant distance apart by feedback control means, feeding a facing material into contact with each conveying surface, supplying to at least one of the facing materials, anterior to the nip, a foam-forming reactional mixture, continuously sensing the thrust of the foam against at least one of the platens by continuously measuring the fluid pressure required to maintain the platens in said constant positions, controlling the rate of lay-down of the foam-forming mixture per unit area of facing material so as to maintain the thrust within desired limits, and removing the laminate from the nip. An apparatus for effecting the process is described and claimed. The specified plastics material is polyurethane.
Patent GB-631427-A (GB)
Title: Improvements in or relating to insulated electrical conductors
IPC: H01B3/10
Filed: 1947-08-08
Abstract: An electric conductor is made from an alloy comprising 60 per cent nickel, 15 per cent chromium and 25 per cent iron.
Patent GB-856132-A (GB)
Title: Improvements in and relating to magnetic amplifiers
IPC: H03F9/02
Filed: 1956-11-28
Abstract: 856,132. Magnetic amplifiers. SYNTRON CO. Nov. 28, 1956 [July 20, 1956], No. 21919/60. Divided out of 856,131. Drawings to Specification. Class 40 (9). A magnetic amplifier comprises two superposed ring cores embraced by common input, bias, and short-circuit windings, and wound with A.C. windings connected in series opposition so as to be decoupled from the other windings. The description of the amplifier is the same as that given in the Specification of 856,131 where the amplifier forms. part of a control system for a vibratory feeder.
Patent GB-649667-A (GB)
Title: Improvements in or relating to ladders
IPC: E06C7/08
Filed: 1948-08-20
Abstract: 649,667. Making ladders. GRAVITY LADDERS, Ltd., and KING, J. LAWSON-. Aug. 20, 1948, Nos. 21965/48 and 7398/49. [Class 83 (ii)] [Also in Group X] A ladder having tubular rungs which interconnect tubular side members has each rung keyed against rotation in the rung-receiving holes in the side members by the engagement in a, groove 7 formed in the end of the rung 1 of a tongue 12 projecting into the hole in at least one of the walls 10 of the side member 6, the extremities of the rungs projecting through the side members being spun or swaged over to form complete annular flanges or beads 13 bearing against the outer walls of the side members. The keying tongues may project into holes in either the inner or the outer walls of the side members, and in the latter case the rung is expanded to form a tapering portion 8 which grips the edges of the hole in the inner wall and the groove 7 is pressed against the tongue 12, when the end of the rung is swaged over, so that the groove and tongue are crushed together into close engagement. Ridges or splines 2 may be provided on at least part of the rung to form a non-slip tread, stopping short of the ends of the rung to provide abutments for the inner walls of the side members.
Patent GB-730624-A (GB)
Title: Plasma conservation thyratron
IPC: H01J17/56
Filed: 1953-08-10
Abstract: 730,624. Thermionic valves. RADIO CORPORATION OF AMERICA. Aug. 10, 1953 [Aug. 26, 1952J, No. 22014/53. Class 39 (1). In a gas-filled discharge tube, solid conductive extended portions of the anode and/or the control electrode serve to provide a completely enclosed region for the plasma discharge, except for minimal inter-electrode clearance. The tubes described are plasma thyratrons, and the construction of the invention enables the plasma to be conserved more efficiently during the conductive period, and also dissipated more quickly during the non-conductive period. In Fig. 2, the cathode 12 is surrounded coaxially by the control electrode, formed by a cylindrical array of rods 14, bounded by end collars 35. A pair of end plates 18, 19 abut against the inside surfaces of mica spacers 22, 23, being connected to the grid wires and extending almost to the cathode. The surrounding anode 16, which may have inwardly-extending fins, is similarly connected to end-plates 20, 21. In the modi- . fication of Fig. 3, the grid comprises a number of U-shaped members 14<SP>1</SP>, all joined at their centre-point, the anode being a dome-ended member 161. In this arrangement there is only one mica spacer 23, with end plates 19<SP>1</SP>, 21<SP>1</SP> as previously. The inter-electrode gaps between cathode and control electrode plates, and between the latter and the anode plates, may contain insulating members. The thyratron described may be used in an inverter circuit such as Fig. 6 (not shown). Fig. 7 (not shown) compares graphically the performance of the tube with prior tubes.