baber/WOPTO huggingface dataset:
Patent GB-550519-A (GB)
Title: Improvements in or relating to a telephoto objective
IPC: G02B13/02
Filed: 1942-04-29
Abstract: 550,519. Telephoto objectives. KODAK, Ltd. April 29, 1942, No. 5788. Convention date, July 26, 1941. [Class 97 (i)] A front component consisting of a bi-convex element I cemented to the front of a negative element II is spaced from a rear negative meniscus component III a distance lying between 0.45 times the focal length F, and 0.9 F. The radius of the convex surface of the component III may lie between F/8 and F. The component III may be concave to the front or to the rear, its thickness may lie between 0.02 F and 0.20 F, and it may be simple or compound its concave surface bounding a glass having a refractive index less than 1.55; when it is compound, the radius of the cemented surface may lie between F/4 and F, and the glass behind the cemented surface may have a refractive index at least 0.07 greater than that of the glass in front of the surface, and a dispersive index not more than 15 less. The front surface of the front component may be strongly curved. Complete data for four examples are set out. Specification 536,556 is referred to.
Patent GB-779250-A (GB)
Title: Improvements relating to spool axminster carpet looms
IPC: D03D39/02
Filed: 1954-02-27
Abstract: 779,250. Spool Axminster carpet looms. HILL (KIDDERMINSTER), Ltd., W. and HILL, W. May 5, 1955 [Feb. 27, 1954], No. 5847/54. Class 142 (2). A gripper mechanism 161-164 is positioned beneath the warp 21 and is raised by cam mechanism to grip the pile yarns 11, draw them through the warp and return them to the upper side of the warp after severance to form tufts. The pile yarn spools 10 are carried by chains 13 and the pile yarns from the spools are separated by combs 14 mounted on brackets 12. The gripper mechanism extends across the width of the loom and has springs 18 tending to close the grippers. A bowl 166 on an arm 165 co-operates with a cam to open the grippers. Cam means raises and lowers the gripper mechanism through the warp. A comb 22 is raised by cams to engage and space the warp, and may be spring mounted. The comb 22 may be mounted on the gripper mechanism. Knives 24 cut the tuft yarns. The gripper mechanism may be moved sideways when at its lowest position to pass the tuft yarns round the stuffer warp ends. A reed 23 beats-up the weft. If the weft is inserted by a shuttle only one weft yarn is inserted at each pick.
Patent GB-422309-A (GB)
Title: Improvements in cleaning and polishing devices
IPC: A47L1/06
Filed: 1934-02-22
Abstract: 422,309. Cleaning and polishing appliances. PHILLIPS, F., 217, Gloucester Road, Bristol. Feb. 22, 1934, No. 5870. [Class 19] An appliance for cleaning and polishing floors comprises a head 2, Figs. 2 and 3, adapted to receive a handle 9 and formed of trough shape to hold a folded rubber strip 3. Screws 5 pass through the strip into a strip of balata 4 which is riveted to the head 2. The appliance is adapted to be used with interchangeable brushes and pads, each being provided with battens 12 between which the strip of balata may fit and be held by friction. In a modification, two strips of balata are provided which are spaced apart to receive a batten on the back of a brush. In a further construction shown in Fig. 6, a curved metal plate 13 apertured to fit over the socket portion of the head 2 is secured to the head by a bolt and wing nut and is adapted to hold resiliently a brush 11 in position below the balata strip 4. The handle is in sections, one of which carries a tube of polish which can be extruded by means of a plunger.
Patent GB-1184780-A (GB)
Title: Improvements in Surf Boards
Inventor: COLLARO CHRISTOPHER
IPC: B63B35/79
Filed: 1969-02-04
Abstract: 1,184,780. Surf board. C. COLLARO. 4 Feb., 1969, No. 5982/69. Addition to 1,098,970 Headings B7A, B7S and B7V. A surf board has sufficient buoyancy to support a rider, a seat 13 pivotally mounted at 11 to turn about an upright axis (and detachable and buoyant to support the rider if he is thrown overboard), a rudder 6 (comprising a strip of flexible plastics material moulded at 7 into the after end of the keel 3) connected via arm 14 to the seat so that the rider can steer by twisting same, and a catch 17 at the underside of its bow for the attachment of a tow rope 23 having a mechanism controlled by a member 22 held by the rider and so arranged that when the member is pulled by the rider the catch holds the tow rope but on release of the member the catch releases the rope. The hull 1 is a hollow moulding of glass fibre reinforced plastics material formed with internal webs 2, central keel 3, and hollow bilge keels 4, and is filled with polyurethane.
Patent GB-1424592-A (GB)
Title: Guns or tools employing cartridges
IPC: B25C1/14
Filed: 1973-02-07
Abstract: 1424592 Cartridge-actuated fastener driving tools GUNNEBO BRUKS AB 7 Feb 1973 [7 Feb 1972 (3) 3 Jan 1973] 6115/73 Heading B4C The subject-matter of this Specification is the same as that of Specification 1,424,591, but the claims are concerned with the cartridge chamber.
Patent GB-177953-A (GB)
Title: Improvements in lubricating systems
IPC: F01D25/20
Filed: 1921-02-23
Abstract: 177,953. Grant, J. E. P. Feb. 23, 1921. Gravity - feed lubricators; indicating in connection with lubricating. - In a lubricating system for geared turbines &c. in which oil is supplied to the gear-casing from a tank, means are provided whereby oil is supplied automatically from a second tank as soon as the first tank has been discharged. Oil is supplied normally from a tank 3 through a pipe 2. A second tank 6 is connected to the pipe 2 by a pipe 7 through a valve 10, the stem 11 of which is fitted with a piston 12 sliding in a cylinder 13. The upper and lower ends of the cylinder 13 are connected to the lower ends of the tanks 3. 6, respectively, by pipes 14, 15. Alternatively, the ends of the cylinder may be connected to the pipes on each side of the valve. In operation, the pressure of oil in the tank 3 keeps the valve 10 closed, but when the tank 3 becomes empty, the pressure of oil in the tank 6 opens the valve and allows oil to be supplied from the tank 6. An electric alarm bell 27 is actuated when the valve 10 is opened, an arm 29 on the stem 11 contacting with a plate 28. Oil drains from the gear-casing 1 to a tank 16, whence it is pumped by a pump 18 through a filter 20 back to the tanks. Hand-valves 5, 9, 25, 26 are provided. The valve 10 may be arranged as in Fig. 3, so that, when it is opened, it is held open by a spring-pressed pawl 31 until released by hand. It is stated that a third tank may be used.
Patent GB-138737-A (GB)
Title: Improvements in shutters for cinematograph projectors
IPC: G03B9/10
Filed: 1919-03-12
Abstract: 138,737. Myers, M. E., and Harper, M. A. J. March 12, 1919. Kinematograph apparatus. - A shutter for projection purposes comprises one or more blades formed of material k adapted to diffuse the light, and with small transparent areas or openings k<1> which will preserve on the screen the basictones of the picture, or a sense of these tones even though the picture film is receiving movement. In the masking- blade, a concentric series of small holes k<1> are used. In the flicker blade, larger openings or elongated slots o' are formed. The diffusing- blade k may be encased between reinforcing openwork metal. plates j, or may be ruled with a netting of opaque lines.
Patent GB-945097-A (GB)
Title: Improvements in and relating to methods of diffusing boron into semi-conductor bodies
Inventor: BEALE JULIAN ROBERT ANTHONY
IPC: C30B31/06
Filed: 1961-02-20
Abstract: 945,097. Semi-conductor devices. MULLARD Ltd. Nov. 13, 1961 [Feb. 20, 1961], No. 6150/61. Heading H1K A current of inert gas containing a controlled amount of oxygen or water vapour is passed over a heated boron supply and the resulting boron-containing current passed over a heated semi-conductor body into which the boron diffuses. The boron source may be commercial boron nitride or a metal boride, preferably freed of oxygen by a preliminary heating in nitrogen, and the inert gas may be argon or nitrogen. Suitable sources of water through which the dry inert gas is passed are mixtures of water with glycerol or diethylene glycol, aqueous sulphuric acid, aqueous solutions of salts such as sodium or potassium hydroxide, and crystals containing water of hydration. The water content of the resulting gas may be adjusted by admixture with dry inert gas. Oxygen can be introduced into an inert gas stream via a small orifice. In a typical process (Fig. 1), nitrogen is passed through zinc oxidecopper oxide catalyst 1 heated to 170‹ C. to convert oxygen to water which is then absorbed in activated alumina 3, and thence through glass wool filter 4 and liquid air trap 5 to a vessel 6 containing a mixture of diethylene glycol and 1 % by volume of water. The resulting wet gas is passed over a source 14 of boron and wafers 12 of 1 ohm em. N-type silicon, both heated to 1200 ‹ C. for a period of 2 hours to form sub-surface PN junctions in the wafers. Even exposure of the entire surface of the wafers, which are alternatively of germanium, is ensured by use of slotted holder (Fig. 2, not shown).
Patent GB-899664-A (GB)
Title: Improvements relating to sealing rings for use between relatingly fixed surfaces
IPC: F16J15/12
Filed: 1960-02-22
Abstract: 899,664. Joint-making packing. NORTH AMERICAN AVIATION Inc. Feb. 22, 1960 [March 2, 1959], No. 6199/60. Class 122 (3). A sealing ring for use between two fixed members 11, 12, Fig. 4, in a combustion apparatus comprises a ring base 27 with a flexible side wall 28, a sealing ridge 33 projecting from the side wall, a layer 34 of resilient material overlying the ridge, and means in the form of a pressure-receiving surface 31 on the side wall for preventing the ridge from cutting through the resilient material when sealing high pressures. As shown in Fig. 4, the ring, which may be of circular, triangular, square or other shape determined by the cross-section of the part being sealed, has two flexible side walls 28, 29 with thickened end portions 30, 30a providing the pressure-receiving surfaces 31, 31a from which the ridges 33, 33a project a distance less than the thickness of the resilient layers. In action, with the ring arranged to seal against the passage of high pressure gas from the left-hand side of the joint, the ridges 33, 33a are forced towards the seating surfaces and, as they partially penetrate the resilient material, spread the material into the area abutting the surfaces 31, 31a. The ring may be formed of aluminium, stainless steel or beryllium-copper and the resilient material of polytetrafluoroethylene. Instead of locating the ring in a groove 22 in one of the members as shown in Fig. 4, it may be positioned between them and be provided with shoulders 46, 47, Fig. 5, which serve to space the members apart and have bores 23 to receive connecting bolts. The ring shown in Fig. 6 is of double-channel form 49, 50 and 51, 52 for sealing the high-pressure gas regions on opposite open sides of the channel, the spaces between the ridges on opposite sides of the channel being connected to each other by bores 60 in the ring base portion 48 and also to low pressure.
Patent GB-622036-A (GB)
Title: Improvements in flushing cisterns
IPC: E03D1/012
Filed: 1947-03-05
Abstract: 622,036. Water-waste-preventers. FORDHAM PRESSINGS, Ltd., and PARKER, J. F. March 5, 1947, No. 6202. [Class 26] In a syphonic flushing apparatus in which the chain which is pulled to commence the flushing action is passed through a passageway 3 in a rib 2 for connection with the operating mechanism, a mounting bracket 6 is fixed on the seating formed on the rib 2. The bracket 6 has two upwardly bent sides 7 in which a lever 5 is pivoted. One end of the lever 5 is connected to the chain 11, whilst the other end is connected by a link to a piston operated to start the syphonic action. A hole 14 in the bracket registers with the hole 3 in the rib and the bracket may be fixed on top of the rib on either side of the chain-receiving hole 3 by a screw 9. The top face of the rib has a recess 15 to receive a pressed-in portion 13 of the bracket.
Patent GB-896052-A (GB)
Title: The stereo-isomers and the racemate of butane-1,2,3,4-tetrol-1,4-di-(methanesulphonate)
Inventor: FEIT PETER WERNER
IPC: C07C303/28
Filed: 1960-02-22
Abstract: The invention comprises the stereo-isomers and the racemate of butane-1,2,3,4-tetrol-1,4-di-(methanesulphonate).  The compounds are prepared by treatment of the appropriate isomer of 1,4-dibromobutane-2,3-diol with silver methanesulphonate.  In Example (1) DL-1,4-dibromo butane-2,3-diol is dissolved in anhydrous acetonitrile and silver methanesulphonate is added. The mixture is boiled under reflux, the silver bromide filtered off and, after purification, DL-threitol-1,4-di-(methanesulphonate) is obtained. Examples (2)-(4) describe the preparation in a similar manner of the 1,4-di-(methanesulphonates) of erythritol, D-threitol and L-threitol. The products are stated to be active against leukaemia.  According to the Provisional Specification the compounds may also be made by reaction between the corresponding isomers of 1,4-dibromobutane-2,3-diol or the corresponding dichloro or diiodo compounds and a methanesulphonic acid salt, or by reacting the corresponding isomer of 1,2 : 3,4-dioxidobutane with methanesulphonic acid.  The stereoisomers and the racemate of 1,4-diiodobutane-2,3-diol are prepared by treatment of the corresponding isomer of 1,2 : 3,4-dioxidobutane with aqueous hydrogen iodide.
Patent GB-1362089-A (GB)
Title: Device for automatically moving a door into its predetermined position
IPC: E05D11/10
Filed: 1972-02-10
Abstract: 1362089 Door checks J J ESCALONA 10 Feb 1972 [11 Feb 1971] 6252/72 Heading E2M A door check adapted to be mounted in a door panel comprises a support 2 pivotally mounted on a pivot bolt 9, a cam 11 having a recess and non-rotatably mounted on the pivot bolt, and a cam follower 12 biassed into contact with the surface of the cam. A resilient U-shaped casing 22 cooperates with the support 2 to enclose the cam and follower, and the surface of the cam 11 is in sliding contact with the casing. The pivot bolt 9 is rigidly connected to a door mounting plate (10), Figure 10 (not shown), and the arrangement is such that when the door is rotated about the pivot bolt 9 the support 2, casing 22 and follower 12 rotate around the cam 11 which is held stationery by the pivot bolt, and the follower 12 traverses the surface of the cam. The door is checked when the follower 12 engages in a recess 34, 36 or 38, and when the follower is adjacent a recess the spring 5 urges the follower into the recess to cause the cam to move into a checked position. In the illustrated embodiment the three recesses enable the door to be held in the closed position, 90‹ open position and fully open position.
Patent GB-109754-A (GB)
Title: Improvements in or relating to School Chairs.
Inventor: WADE HAROLD
IPC: A47B39/02
Filed: 1917-05-03
Abstract: 109,754. Wade, H., (Langslow Fowler Co.). May 3, 1917. Seats combined with tables.-In a combined chair and table for use in schools &c. the table top is mounted on a vertically adjustable support secured to a forward extension at one side of the seat. By this arrangement clearance is provided for ingress and egress at one side, and one of the front legs a is arranged in front of the other front leg a' so as to prevent overturning of the seat. The table-top 2 can slide backwards and forwards on a horizontal frame on which it is guided and retained by rails k<1> secured to its underside, a stop being provided to limit the movement. The upright supports f, f' are held at the desired height by clamping-bolts m, m<1>.
Patent GB-536362-A (GB)
Title: Improvements in and relating to methods of sealing glass to metal
Filed: 1940-04-08
Abstract: 536,362. Glass manufacture ; uniting metal to vitreous material; alloys. BRITISHTHOMSON-HOUSTON CO., Ltd. April 8, 1940, No. 6322. Convention date, April 7, 1939. Drawings to Specification. [Class 56] [Also in Groups II and XXXVI] A fused joint between metal and glass is made by using a metal having substantially the thermal expansion characteristics of iron and a glass which contains 40-50 per cent. of SiO 2  and B 2 O 3 , of which less than 5 per cent. is B 2 O 3 , 16-20 per cent. of K 2 O and Na 2 O, 28-35 per cent. of PbO and BaO of which at least 10 per cent. is PbO and 3-6 per cent. of CaO and CaF 2 . A glass suitable for sealing to iron contains 45 per cent. of SiO  2 , 14 per cent. of K 2 O, 6 per cent. of Na 2 O, 30 per cent. of PbO, and 5 per cent. of CaF 2 . Compositions of other glasses are given in the Specification. The glass may be used for the flared stem tubes of electric lamps, or for mounting the lead-in wires of metal-enclosed thermionic valves. The leadin wires may be of iron plated with copper to obtain better adhesion with the glass. When the wires are exposed to air, they may be made of an alloy containing 70-80 per cent. of nickel and the remainder of iron. Specification 449,807 is referred to.
Patent GB-1355143-A (GB)
Title: Microwave cavity resonator with printed circuit interior walls and modulation coils
IPC: H01P7/06
Filed: 1972-02-11
Abstract: 1355143 Cavity resonators VARIAN ASSOCIATES 11 Feb 1972 [24 March 1971] 6447/72 Heading H1W [Also in Division G1] A microwave resonant cavity is formed by folding a printed circuit board. As shown, the invention is applied to the cavity of an electron paramagnetic resonance spectrometer of the kind in which a low frequency modulation is applied to the polarizing field. The sheet (e.g. of epoxy glass) is provided with circular apertures 24, 25 and is printed on the side which eventually lies on the outside of the cavity with the pattern shown. This includes two printed spirals 17, 18 to which modulating current is applied. The opposite (inner) side of the sheet is coated overall except in the areas opposite the modulation coils where a pattern of small holes is provided in order to improve penetration of the magnetic field into the cavity (Fig. 2, not shown). The sheet is cut and folded along the lines 26, 27, 28, the inner conductive coating being left intact and a soldered seam being used to join the edges 29. The cavity is completed by the insertion of dished end members 35 one of which is provided with a coupling aperture 38 and a flange member 37 for attachment to a waveguide feeder (not shown). Tubular members 41, 42 affixed over the openings 24, 25 are provided to facilitate insertion of samples. The whole cavity is potted in a suitable insulant 44.
Patent GB-1243744-A (GB)
Title: Photographic materials
Inventor: REYNOLDS GEORGE ARTHUR
IPC: G03C5/60
Filed: 1969-02-06
Abstract: 1,243,744. Photographic bleach-out materials. EASTMAN KODAK CO. Feb. 6, 1969 [Feb. 8, 1968], No. 6449/69. Heading G2C. A photographic bleach-out composition comprises a coloured dithiolium salt and a compound containing a thiocarbonyl group as a bleaching agent. Specified bleaching agents are thiourea and derivatives thereof. The dithiolium salt may be a 5-aryl-1, 2-dithiolium salt, a 4-aryl-1, 3-dithiolium salt, a 5-alkyl-1, 3-benzodithiolium salt, a 4, 5- dihydro-1, 3-dithiolium salt or a bis(-5-alkyl-1, 3-benzodithiolium) alkene salt. The composition may be coated on a support, imagewise exposed to bleach the coloured layer in the exposed areas and stabilized by washer. A binder may be added before coating.
Patent GB-1178551-A (GB)
Title: Improvements relating to Bag or Sack Filling and Closing Apparatus
Inventor: WEBBER GEOFFREY TERENCE
IPC: B65B7/06
Filed: 1967-02-10
Abstract: 1,178,551. Sack-closing machine. STRACHAN & HENSHAW Ltd. 13 Feb., 1968 [10 Feb., 1967], No. 6530/67. Heading B8C. A machine includes grippers for holding the mouth of a sack while the sack is supported and filled, the grippers being able to move apart when the sack is released from the filling station, so that the mouth is elongated and opposed walls are drawn together, the sack then being guided to closure forming apparatus. A sack 4 is filled from a hopper 2, grippers 5 holding diametrically opposed portions of the mouth 3, Fig. 2 (showing the grippers open), the mouth being clamped to the filling nozzle. As the sack is filled a timed agitator 10 vibrates it against an anvil 11, and when full the sack is released on to a conveyer 13, the grippers remaining on the sack mouth. The gripper arms 6 separate and are retracted transversely, thus tilting the sack against a belt 15, and a similar guide belt 17, carried on arms 18, is pivoted into engagement with the mouth. On releasing the grippers 5, the conveyer 13 is started, the mouth being forwarded by belts 17 and 15, then by belts 22, 25, the base of the sack then being supported on a conveyer 23. The sack mouth enters a tamping machine before passing on to a sealing or sewing machine 24. Modifications (not shown) include the hopper 2 being replaced by a feed auger, conveyer 13 being vertically movable and having several runs raisable between fixed slots of a sack support and belts 17, 15 being replaced by rails. Also, there may be two sack-filling stations leading to a single closure forming machine. Adjustment for different sack sizes may be provided and release of a filled sack from the filling spout may be used to initiate the machine cycle.
Patent GB-814945-A (GB)
Title: Improvements in stop motions for knitting machines
Inventor: SHORTLAND ARTHUR
IPC: D04B35/10
Filed: 1955-03-07
Abstract: 814,945. Knitting-machines. MELLOR BROMLEY & CO. Ltd. March 7, 1956 [March 7, 1955], No. 6611/55. Class 74 (2). A stop-motion actuating member 33, controlled by the yarn running from a wound package 5 to a feeder of a knitting machine, is accessibly located below the package and less than 6 feet above the floor surface on which the machine stands; and the yarn guides 28, 38, 10 are so disposed relatively to each other and to the member that a length of running yarn extending from the package to the needles at a feeder and passing over, through, or around the intervening guides and the member, does not include a portion substantially parallel to the machine axis, but follows a path composed of at least three immediately adjoining straight runs, mutually inclined at acute angles so that they are, none of them, vertical, but are disposed in directions which have components radial to the machine axis, the highest point or points of the said path of the yarn being outside the plan of the needle circle and at a height not exceeding 8 feet 6 inches from the said floor surface. The yarn package holders 19 of a multi-feeder cylinder and dial machine are carried by bars 20 extending radially outwards from a carrier comprising concentric rings 21a, 21b, supported on posts 23. Also mounted on these rings are holders 25 for upwardly and outwardly directed arms 26 which support a ring 27 carrying yarn guides 28. The guides 28, 38 are of wire bent into open loops. Each stop motion device comprises a spring influenced member 33, of U- formation, co-operating with a dropper 32. Casings 35, 36, containing respectively the spring for the member 33 and an electric switch influenced by the dropper, are mounted on a rod 31 extending substantially at right-angles to the associated bar 20. In a modification, Fig. 7 (not shown), the stop motion units are more closely grouped in a smaller circle, the rods 31 being set in holders mounted on a ring extending through supports secured on the top of the dial driving gear casing. Specification 814,946 is referred to.