baber/WOPTO huggingface dataset:
Patent GB-259812-A (GB)
Title: Improvements in the manufacture of artificial teeth
IPC: A61C13/08
Filed: 1926-01-28
Abstract: 259,812. Caspari, G. Jan. 28, 1926. Moulds; pressing dies. - In making artificial teeth from ceramic material a mould is formed in plaster or like quick setting material from a model and then used as a press to form the tooth. The mould is made in a two-part metal shell 1, 2. The form shown is designed for making a flatsided tooth. The shell 1 is filled with plaster with a flat surface 6 sloped off at 5 at an appropriate angle against which the model is laid and the curved surface is moulded in the part 2. Hollows 7 are formed in the surface 6 which form projections 8 to secure proper register. Dove-tailed holes 11 retain the plaster in the moulds. Channels 10 allow for the escape of surplus ceramic material, and of steam if the teeth are dried or baked in the moulds. The mould may be hardened and smoothed by means of a coating of shellac.
Patent GB-824762-A (GB)
Title: Improvements relating to controllable gas-filled electric discharge devices of the thyratron type
Inventor: KNIGHT HENRY DE BOYNE
IPC: H01J17/56
Filed: 1955-01-27
Abstract: 824,762. Thermionic valves. BRITISH THOMSON-HOUSTON CO. Ltd. Jan. 18, 1956 [Jan. 27, 1955], No. 2555/55. Class 39(1). In a gas-filled discharge tube of the thyratron type, the control electrode is a hollow cylinder whose ends extend beyond both anode and cathode, and which has attached within it an annular baffle having an aperture in the neighbourhood of the anode; an auxiliary electrode in the form of a disc-like baffle is disposed on the cathode side of said aperture, and coaxial with it. A potential different from both the cylinder potential and the anode potential may be applied to the disc, so that disc and cylinder jointly control the passage of the arc through the annular gap. In Fig. 4, the disc-baffle has a two-part construction, one part 8 being a disc lying in the same plane as the annular baffle 7, and an attached part 10 of larger diameter than the aperture in baffle 7. A priming pulse is applied to the baffle 7 in advance of the firing pulse which is applied to electrode 10. In a simpler form, Fig. 3 (not shown), only the part 10 is used, without the part 8. The electrode 10 may be shielded from the cathode, except for its edge, by a further baffle 11, which can be mounted by supports attached to the control cylinder 5, and is insulated from electrode 10, Fig. 5. To prevent the priming discharge from passing directly to baffle 11, this latter may be shielded by a further baffle 12 which may be connected to the cathode 1. A conical guide 16 assists in directing the discharge. Fig. 6 shows a practical realisation of the diagrammatic arrangement of Fig. 5. Specifications 573,232 [Group XL], and 820,885 are referred to.
Patent GB-308856-A (GB)
Title: Improvements in or relating to slow-motion adjusting devices for wireless instruments
IPC: H03J1/14
Filed: 1928-01-26
Abstract: 308,856. Igranic Electric Co., Ltd., and Wright, S. R. Jan. 26, 1928. Variable-speed gearing.-In slow-motion adjusting devices for wireless instruments such as condensers, the spindle 4, Fig. 1, of the adjusting handle 9 carries a part 3 with a spherical surface frictionally gearing with a disc 1 or other element on the rotating shaft 2 of the condenser &c., the spindle 4 being diametrical to the surface 3 and being rocked about an axis 6 at right angles to itself to vary the gearing ratio by varying the radial distance from the spindle 4 of the point of contact between the parts 1, 3. The part 3 may be pressed by a spring 8 against the disc 1. The shaft 4 may be locked at varying angles to the disc 1 by the engagement in notches in fixed brackets 7 of pins 12 on a bracket 10 rocking with the shaft 4, the knob 9 being pulled to compress the spring 8 and to disengage the pins 12 from the notches before the shaft 4 is rocked from one position to another. In a modification, Fig. 3, the spherical part 3 is of rubber and the disc 1 is supported opposite the part 3 by a roller 13. The shaft 4 carries a hemisphere 4a bearing, and retained by the reaction of the part 13, in a cup 5a and is held in various positions in a slot c by a forked spring 15 notched to hold the shaft 4.
Patent GB-569367-A (GB)
Title: Improvements in cut-off devices for the automatic closing of a fluid line
IPC: F16K17/34
Filed: 1943-02-17
Abstract: 569,367. Valves. WATERMAN, W. Feb. 17, 1943, No. 2604. Convention date, Jan. 2, 1942. [Class 135] A valve for automatically closing a fluid line is normally held in open position by a device which yields to permit the valve to rotate and move to closed position when the rate of flow exceeds a predetermined maximum. As shown in Fig. 1, the valve head 10 is resiliently mounted on a carrier 13 provided with vanes 17 on which the flow acts, and is normally prevented from rotation on a screw 14 by a flexible member 19 engaging notches 21. After freeing of the member 19, the carrier rotates, finally passing off the screw, which drops to engage behind the carrier and thus hold the valve closed. In another form, the valve is held against rotation by normal flow by a spring-pressed ball 42, Fig. 4, and is locked when closed by a spring-pressed latch 60. The Specification as open to inspection under Sect. 91 states that the member 19 may be made from bimetallic strips and be Z-shaped. This subject-matter does not appear in the Specification as accepted.
Patent GB-353860-A (GB)
Title: Improvements in or relating to the weaving of plush and like warp-pile fabrics
IPC: D03D27/10
Filed: 1930-01-25
Abstract: 353,860. Pile fabrics woven double or face to face. DREY, SIMPSON & CO., Ltd., DREY, O., and BYRD, H. L., Hanover Mills, South Reddish, Stockport, Cheshire. Jan. 25, 1930, No. 2616. [Class 142 (iv).] In weaving warp pile fabrics in a double plush loom, two or more pile warps x, y, Figs. 1 and 2, are drawn through one dent of the reed, and when the said warps do not actually form pile, one or more of them is or are woven "fast pile" or W weave in the top cloth A while the other or others are woven in like manner in the bottom cloth. Fig. 1 shows a plan view of the bottom cloth after cutting the pile warps extending between the two cloths. A modification is described wherein the pile warps pass below two wefts in the top cloth and above two wefts in the bottom cloth. Designs &c. are formed by using pile warps of different colours and by means of jacguards and dobbies. Reference has been directed by the Comptroller to Specifications 8920/95, 18798/95, 9768/96, 13059/96, 5010/98, and 3098/99, [all in Class 142, Weaving &c.].
Patent GB-400043-A (GB)
Title: Improvements in stair carpet holders
IPC: A47G27/06
Filed: 1933-01-27
Abstract: 400,043. Stair - carpet fastenings. SMITH & DAVIS, Ltd. and SMITH, H. F., Beacon Works, Hampton Street, Birming- ham. Jan. 27, 1933, No. 2616. [Class 52 (v).] In stair-carpet fastenings of the kind including an attachment plate 1 fixed only to the stair tread or to the stair riser, and a two-armed slide 5 one arm of which engages the attachment plate while the other arm engages the edge of the carpet, the attachment plate is provided with a single securing member such as a spike, or a single hole 2 for a screw, and has a foot or feet 10 to engage the tread when the plate is secured to the riser, or to engage the riser when the plate is secured to the tread. As shown, the rear arm of the slide is channel shaped and the attachment plate is bent to form an upper flange 4 and slit along the lines 6, the part between the slits being bent upwardly to form a lower flange 7. The legs 9 thus formed are bent outwardly to form the feet 10. The slide engages the flanges 4, 7. Fig. 3 shows a modification in which'the attachment plate is slit along lines 12, 14, 15 and bent to form flanges 13, 16 for engagement by a slotted slide 17, the feet 22 being bent up from the lower part of the plate. The upstanding parts 19 prevent the plate rocking about its longitudinal centre line. In a further modification the plate is bent to form a channel groove for the rear arm of the slide.
Patent GB-953441-A (GB)
Title: Improvements in and relating to apparatus for testing electric insulation
Inventor: CURE JOHN RAYMOND
IPC: G01R31/14
Filed: 1960-01-25
Abstract: 953,441. Protective arrangements. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 25, 1961 [Jan. 25, 1960], No. 2657/60. Heading H2K. [Also in Division G1 An arrangement for detecting electric sparking or arcing, for example in an oil immersed transformer under impulse test, comprises a piezo-electric element contacted by the liquid and responsive to the audio-frequencies produced by the sparking or arcing. The element SU is of barium-titanate or polarized polycrystalline ceramic and is positioned adjacent the winding WD or other apparatus in which the sparking may occur. The signal produced by the element is amplified by an amplifier AM which may include transistors and the resulting signal is supplied to a cathode-ray tube CRT or to other indicating, alarm, recording or controlling means.
Patent GB-180378-A (GB)
Title: Improvements in tumbler switches
IPC: H01H1/42
Filed: 1921-01-20
Abstract: 180,378. Takaoka, Y. Jan. 20, 1921. Switches, quickbreak; bases; contacts.-In a tumbler switch having an operating-dolly in connected by an insulating-link e to a U-shaped pivoted spring - controlled bridging - contact c co-operating w i t h fixed spring contacts f connected by parts h to terminal posts g, sheets k of insulating-material are mounted between the bridge l and the porcelain base a. The insulating-sheets k prevent the leads passing through the terminal posts g from touching the metal cover o and also act as cushions between the bridge e and the base a, obviating breakage of the latter while the fixing- screws j are being tightened. Each of the fixed contacts f, Fig. 4 or 5, preferably consists of three elastic spring plates 1, 2, 3 riveted together at their centre points.
Patent GB-729630-A (GB)
Title: Improvements in or relating to ironing boards
IPC: D06F81/04
Filed: 1954-01-29
Abstract: 729,630. Folding underframes. MOORE, F. T. D. April 12, 1954 [Jan. 29, 1954], No. 2698/54. Class 52 (3). A pivoted X frame stand for an ironing board 1 has one pair of legs 3 hinged to the board and the splay of the other pair is adjusted by a chain &c. 11 engaging a peg or catch 15 on the board. The adjustable legs are preferably in two sections 6, 7 hinged at 8 to facilitate folding against the underside of the board and the upper ends are connected by a cross-bar 5 moving in a slide 4.
Patent GB-1499031-A (GB)
Title: Frame for pictures
IPC: A47G1/06
Filed: 1975-01-22
Abstract: 1499031 Picture frames; hanging pictures M KUHLING 22 Jan 1975 [22 Jan 1974 10 Dec 1974] 2775/75 Headings A4U and A4X A picture frame comprises a transparent front part 1 defining a central surface 5 and a peripheral rim 3, and a back wall 2 defining a central surface 6 and a peripheral rim 4 or 13 and fitting within the front part 1 to hold the picture 7 between part 1 and wall 2, part 1 and wall 2 being held together by at least one depression and mating protrusion on their respective rims. The protrusions may comprise spring urged clamping plugs (10) Fig. 3 (not shown). In Fig. 4, the rim 13 is U-shaped and includes protrusions 17 that snap into depressions 16 in rim 3. Back wall 2 may be transparent, or may comprise aluminium sheet. The frame can be hung on a nail by a flange 8 of rim 3 or a sloping part 14 of rim 13.
Patent GB-553055-A (GB)
Title: Improvements in and relating to foot operated crank mechanisms having a non-circular pedal path
IPC: B62M3/04
Filed: 1941-03-03
Abstract: 553,055. Cycle driving mechanism. MAGUS PATENTVERWERTUNGS-GENOSSENSCHAFT. March 3, 1941, Nos. 2876 and 2877. Convention dates, March 26, 1940, and Sept. 13, 1940. [Classes 136 (ii) and 136 (iii)] [Also in Group XXIV] Relates to pedal crank mechanism e.g. for bicycles in which the path described by the pedal is non- circular e.g. elliptical or closed oval. A rotor element 4, Fig. 4, consisting of halves 4a, 4c is journalled in a bearing element 1 to which the frame tubes R<SP>1</SP>, R<SP>2</SP>, Fig. 5, and lower fork G are secured. The halves 4a, 4c, are relatively located by pins 6 and held together by bolts 5. The element 4 carries planet wheels 9 journalled on diametrically opposed trunnions 7. Each planet meshes with an internally toothed gear rim 10 of twice the diameter of the planets and situated one on each side of the element 1, and assembled by brackets 15, distance pieces 16 and bolts 18. Side portions 4b, 4d form closures whereby the closed housing can be filled with oil, and in these side portions are formed bosses to receive ball bearings 11 for the trunnions 9z of the cranks T which are secured to the planets 9. The sprocket wheel 17 is secured to the side portion 4d. The major axis a of the ellipse, Fig. 5, which is in line with the cranks when the latter are aligned, is inclined to the horizontal at an angle a which may be varied by rotating the gear-rims 10 from the handle-bars by a lever 26, Fig. 5, shaft 25 within the frame tube R<SP>2</SP>, bevel gears 24, 23 and pinions 20 meshing with toothed segments 19 secured to the rims. In a modification, Fig. 6, a bearing element 31 fixed to the cycle frame has a hub 31n in which is journalled an axle 34 the ends of which are fitted with diametrically opposed cranks 35 themselves laterally cranked inwards and forming with the axle 34 the rotor element. In a widened outer end portion of each crank 35 is journalled a crank-pin 38 to which is fitted the crank T, the inner end carrying a sprocket 39 geared by a chain 41 to a fixed sprocket 40 of twice its diameter. In a further modification, Fig. 8, a bush 51 secured to the frame, forms a bearing for a spindle 54 to which are secured the sprocket wheel 17 and cranks 55. In the outer ends of the latter are mounted the pedal cranks T integral with pinions 59 gearing through one or more pinions 61 with a fixed gear 60 of twice its diameter. At the rear end of the lower frame fork G an idler wheel 28 is supported on an arm 29. From the idler 28, Fig. 5, the lower rim of the chain passes'over the driven sprocket 31 on an axle received in a downwardly inclined open slot 30s so as automatically to tighten the chain on inserting the back wheel. In a modification, Fig. 10 (not shown), two idler wheels are employed. Specification 13994/95, [Class 80], is referred to.
Patent GB-925344-A (GB)
Title: Improvements in or relating to information storage arrangements
IPC: G11C19/04
Filed: 1962-01-25
Abstract: 925,344. Electric digital-data-storage apparatus. SIEMENS & HALSKE A.G. Jan. 25, 1962 [Jan. 27, 1961], No. 2951/62. Addition to 850,206. Class 106 (1). In an arrangement for storing data for a predetermined period of time as claimed in the parent Specification, the digits are introduced into the storage elements in one timing cycle and read out in a different timing cycle. As shown, binary data to be delayed is applied to a terminal 14. During the first cycle of a distributer 7, outputs 9, 11, 13 are effective to open " and " gates 4, 5, 6 at times synchronous with successive bits of the data to be delayed, the successive binary bits being stored in storage elements 1, 2, 3. During the next distributer cycle, the storage elements 1, 2, 3 are read out at a terminal 15.
Patent GB-356635-A (GB)
Title: Improvements in or relating to antenna systems
IPC: H01Q19/22
Filed: 1931-01-29
Abstract: 356,635. Directive wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and CARTER, P. S., Port Jefferson, Long Island, New York, U.S.A. Jan. 29, 1931, No. 2960. Convention date, March 14, 1930. [Class 40 (v).] A broadside beam aerial 1, Fig. 1, is energized through feed-lines 10 which are an odd number of half wave-lengths long, whilst the associated reflector system 2 is energized through feed-lines 12 an odd number of quarter wave-lengths long. The two feed-lines 10, 12 have a common junction point at 0, an impedance-patching network 8 being interposed between this point and the highfrequency power source 4. This feed-line system gives high maximum efficiency for a forward direction of radiation. Where unidirectional rearward radiation is required, the aerial and reflector systems are also directly connected through a feed-line 14, which is crossed, as shown in Fig. 2, and is of the same length as that separating the two aerial structures 1, 2, i.e. an odd number of quarter wave-lengths.
Patent GB-212371-A (GB)
Title: Improvements in signalling apparatus for use upon road vehicles
IPC: B60Q1/34
Filed: 1923-02-01
Abstract: 212,371. Dunn, J. H., and Phelps, S. H. Feb. 1, 1923. Bowden mechanism.-A direction indicator has two hands 7 for indicating stopping and turning mounted on a common base member. Each hand is operated by a cable 9 attached to a plunger 8 moving in a tube 1 against the action of a spring 21 and carrying a pin 10 which engages at one end in a longitudinal slot 11 in the tube and at the other in a helical slot 12 in the spindle 13 of the hand. The operating levers 30 carry contact pieces 36, Fig. 5, which engage with a member 35 to light the lamp 24 when a hand is moved into operative position.
Patent GB-121449-A (GB)
Title: Method of and Apparatus for Burning Inferior or Anthracitic Fuel in any Existing Furnace or Automatic Stoker.
Inventor: BOIZARD RAOUL
IPC: F23K3/08
Filed: 1918-02-20
Abstract: 121,449. Boizard, R. Dec. 14, 1917, [Convention date]. Steam-generator &c. furnaces.-Inferior or anthracite fuel is ignited in a thick bed so as to produce gases therefrom, and the ignited fuel is then carried forward to burn in a thin bed, the gases produced in the preliminary stage of combustion being also burnt in the furnace. As shown in connexion with a chain grate, the fuel is fed from a hopper A and ignited to burn with a blast of air supplied at B, the combustion being completed at C. The gases evolved from the fuel are delivered at D through openings in the crown of the furnace. In a modification, the air blast at B is dispensed with, the air for the initial combustion being supplied through the grate only.
Patent GB-534385-A (GB)
Title: Improvements in and relating to filters or cleaners, such as for air and gases
IPC: F02M35/024
Filed: 1940-02-17
Abstract: 534,385. Air &c. filters. AIR MAZE (GREAT BRITAIN), Ltd. (Air-Maze Corporation). Feb. 17, 1940, No. 3042. [Class 8 (ii)] [Also in Group I] A filter is formed of wire gauze which is first crimped or corrugated and then folded so that portions of the peaks of the corrugations are in contact and prevent nesting of the folds. Fig. 1 shows a corrugated sheet which is folded in two along the line a-a; where more than one fold is made, the completed element may constitute a flat N or W. The pitches of the corrugations on the two sides of the line a-a may differ. A flat portion may be left between two parallel folding lines, providing in the finished element a plain sheet lying between oppositely corrugated sheets. Alternately, the parts on opposite sides of the folding line a-a may be oppositely corrugated and two such folded elements may be nested together. A cylindrical filter may be formed as in Fig. 19, by rolling a folded element. U.S.A. Specification 1,918,006 is referred to.
Patent GB-571812-A (GB)
Title: Improvements in or relating to liquid fuel burners of the pressure type
IPC: F23D11/44
Filed: 1944-02-18
Abstract: 571,812. Vapour lamps. IMBER RESEARCH. Ltd., and HEBARD, H. C. Feb. 18, 1944, No. 3043. [Class 75 (i)] In a pressure lamp or stove the fuel vaporizing tube 9 is slidable downwards in the fuel reservoir 1 relatively to a fixed needle 42 for cleaning the vapour nipple orifice 34 and is connected to the reservoir by a flexible metal bellows 16 which acts as a return spring for raising the tube 9 to the operative position. The upper end of the bellows 16 is secured to a disc 18 held in a socket 13 in the fuel reservoir by a screw plug 19 carrying a sleeve 21 through which the tube 9 passes. The tube 9 is lowered by rotating a sleeve 25 by an arm 27, the sleeve being attached to the tube by a U-shaped pin 26 and carrying a roller engaging in an inclined slot 24 in a sleeve 23 surrounding the sleeve 21. The needle rod 36 is secured by a nut 37 to a perforated plug 11 at the bottom of a casing 10 secured in the socket 13. The upper end of the tube 9 is formed with an enlarged head 30 carrying a coiled tube 31 extending around The burner 32. On removing the nut 20 the tube 9, rod 36 and needle 42 may be detached as a unit from the reservoir 1.
Patent GB-585581-A (GB)
Title: Improvements in or relating to the manufacture of cysteine derivatives
Filed: 1944-02-19
Abstract: Cysteine derivatives, of possible interest for a synthesis of penicillin and of penicillin-like substances, are obtained by condensation, in the presence of an anhydrous hydrogen halide, of an oxazolone having the general formula <FORM:0585581/IV/1> wherein R1 represents hydrogen or an alkyl or aralkyl group, R2 represents an alkyl or aralkyl group and R3 represents an alkyl, aralkyl or aryl group, with an acid-stable mercapto compound of the type R.SH, wherein R represents an alkyl or aralkyl radical, and effecting fission of the oxazolone ring by adding at least one molecular equivalent of water.  When reaction is effected in a strictly anhydrous solvent medium, e.g. glacial acetic acid containing a small quantity of acetic anhydride, the products isolated may be thiol derivatives of the corresponding oxazolone, but addition of at least one molecular equivalent of water results in fission of the oxazolone ring to yield products conforming to the general formula <FORM:0585581/IV/2> wherein R is an alkyl or aralkyl group, R1 and R2 have the significance above defined and R4 represents an acyl group, acid hydrolysis of which produces amino derivatives of general formula <FORM:0585581/IV/3> wherein R, R1 and R2 have the significance above-defined.  Fission of the oxazolone ring and acid hydrolysis may be affected concomitantly by adding, e.g. dilute hydrohloric acid to the reaction mixture and heating to convert the -NHR4 group into the -NH2 group, and in some cases mere addition of water and thereafter heating may suffice.  In examples: (1) 2-phenyl-4-isopropylidene oxazolone in glacial acetic acid containing acetic anhydride is treated with benzyl mercaptan and the mixture is cooled to 10 DEG  C., prior to saturation with dry hydrogen chloride, and subsequent standing of the closed reaction vessel at 25 DEG  C. to isolate dl-S-benzyl-N-benzoyl-b  : b -dimethylcysteine; (2) 2-phenyl-4-isopropylidene oxazolone in glacial acetic acid containing acetic anhydride is treated with benzyl mercaptan and saturated with dry hydrogen chloride as in (1), setting the mixture aside at room temperature and the mixture is then boiled with dilute hydrochloric acid to isolate dl-S-benzyl-b  : b -dimethylcysteine.