baber/WOPTO huggingface dataset:
Patent GB-869736-A (GB)
Title: Improvements in or relating to letter-box box closures
IPC: A47G29/126
Filed: 1959-11-17
Abstract: 869,736. Letter-box closures. KERSHAW, T., and KERSHAW, J. H. Nov. 17, 1959, No. 38889/59. Addition to 854,742. Class 18. The letter box closure described in the parent Specification is modified in that there is provided a lower mounting member 14 against which the flap 10 rests in an inclined position when it is closed. The bead 20 is connected to the remainder of the flap 10 by a cranked bridge 22. A lip 26 prevents the bead from dropping out of the channel 24 and a rib 28 helps to secure the member 12 to the outside of the door. A projection 36 on the flap rests against a rubber tube 34 resting in a channel 30 in the member 14. This tube forms a seal with the flap 10 which may be corrugated as shown. The tube may be replaced by a pad of resilient material stuck to the member 14. The members 12, 14 are joined by end-pieces which have beads at their upper and lower ends to engage in the channels 24, 30 respectively. The closure may be formed from aluminium or aluminium alloy.
Patent GB-864004-A (GB)
Title: Improvements relating to semi-conductor rectifiers
Inventor: CROCKER NORMAN JOSEPH
IPC: H01L21/48
Filed: 1958-12-04
Abstract: 864,004. Semi-conductor devices. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 3,1959 [Dec. 4, 1958], No. 39184/58. Class 37. An hermetically-sealed rectifier has a wafer of semi-conducting material in the bottom of a cup joined at its flanged rim to a similar flanged rim of another cup, a lead which makes connection to the wafer passing through a tube sealed in vitreous material in the base of the other cup. In the arrangement shown in Fig. 1 a wafer 4 of germanium is soldered to the base of cup 2 which is of a cobalt-nickel iron alloy and which carries a butt-welded conductor 7, by a lead-tin eutectic solder containing 1% by weight of antimony. A pellet 10 of indium is alloyed to the germanium at about 500‹ C. to form the junction and a nickel wire 6 is fused to conductor 10. Cup 1 which contains a seal 9 of a borosilicate glass whose coefficient of expansion is compatible with that of the cup is presented to the lower cup so that nickel wire 6 passes through nickel tube 8. The flanges of the two cups are resistance-welded together at 3 and tube 8 pinched off to seal the housing. In a further embodiment (Fig. 3) where the whole device is so small that threading the conductor through tube 8 would be difficult, a flat headed pin 6 is used instead of conductor 1. The head of the pin is coated with an indium tin alloy (50: 50 by weight). Initially the two housings are sealed together with cup 1 below cup 2 so that the head of the pin rests on tube 8. The arrangement is then inverted so that the head of the pin contacts the indium pellet. Further heating to 150‹ C. solders them together and tube 8 is then pinched off. The Specification states that the rectifier may be silicon instead of germanium and that instead of the glass filling shown in cup 1, a small glass bead may be provided in the base of the cup.
Patent GB-1486845-A (GB)
Title: Tractor-trailer aerodynamic drag reducer
IPC: B62D35/00
Filed: 1975-09-25
Abstract: 1486845 Deflecting guards GENERAL MOTORS CORP 25 Sept 1975 [15 Oct 1974] 39279/75 Headings B7B and B7J In a generally wedge-shaped drag reducing device 40 on a cab roof, the leading edge 48 thereof is of lesser width than the cab roof and the top surface 42 has side edges diverging rearwardly and upwardly to a trailing edge, the vertical sides 44, 46 thereof forming, from front to rear, concave-convex surfaces. In a modification Fig. 6, the top surface 42 is formed to be convex. The Specification describes arrangements of the device on a tractor-trailer vehicle taking into account the gap w between cab and trailer, the height of the trailer h2-h1 above the cab roof and the average angle of inclination # the top surface 42 to the cab roof. The device 40 which may have a rear wall (not shown) may be made of sheet metal or fibre glass and may be made separate or integral with the tractor cab.
Patent GB-347666-A (GB)
Title: Improvements in and relating to the production of halogen phthalic anhydrides
IPC: C07C51/56
Filed: 1929-12-24
Abstract: A salt of a halogen phthalic acid is treated with sulphuric or hydrochloric acid, preferably in theoretical amount, and heated to obtain a sulphate or chloride and the corresponding halogen phthalic anhydride.  In order to avoid unnecessary evaporation, it is preferred to use the concentrated acid, so that the strength of the sulphuric acid, for example, should be over 90 per cent. The product obtained in suitable for use in condensation, especially in condensations involving the use of anhydrous aluminium chloride.  In examples (1) 45 parts of 100 per cent sulphuric acid are heated to 100 DEG  C., and 200 parts of the acid sodium salt of 4-chlorphthalic acid added.  The temperature is then raised to 200 DEG  C., and held there for several hours, until all the water which is formed has distilled off.  The 4-chlorphthalic anhydride may be separated after cooling by extraction with benzene, toluene, solvent naphtha or the like. (2) The acid potassium salt of 3-chlorphthalic acid is heated with sulphuric acid to 150 DEG  C., and then to 200 DEG  C.  (3) The acid potassium salt of 3 : 4-dichlorphthalic acid is heated with sulphuric acid to 160 DEG  C., and then to 200 DEG  C.  (4) The calcium salt of 3 : 6-dichlorphthalic acid is heated at 180 DEG C., and then to 200 DEG C., with sulphuric acid.  (5) 111 parts of acid sodium 4-chlorphthalate are heated with 120 parts of 30 per cent hydrochloric acid to 100 DEG C., rising to 160 DEG C., and then to 200 DEG C., and further treated as in example (1).
Patent GB-1026016-A (GB)
Title: Production of moulded elements
Inventor: WEINBRENNER ERWIN
IPC: B29C44/16
Filed: 1962-10-18
Abstract: 1,026,016. Moulding foamed synthetic resins. FARBENFABRIKEN BAYER A.G. Oct. 18, 1962 [Nov. 4, 1961], No. 39482/62. Heading B5A. A moulded article, e.g. a cushion, having a deformable covering of e.g. textile fabric, elastic foil or synthetic leather bonded to a foamed polyurethane resin is formed by positioning the covering above the reaction mixture at such a position that the resin only contacts the covering, when foaming is nearly complete. The covering may be supported by a former of e.g. wire mesh or rods or by vacuum.
Patent GB-1438364-A (GB)
Title: Air removing device
IPC: B67C3/22
Filed: 1973-08-21
Abstract: 1438364 Air reducing device MOLSON INDUSTRIES Ltd 21 Aug 1973 [8 May 1973] 39486/73 Heading B8T [Also in Division B1] An air reducing device destroys foam and removes air from bottles en route from a filling station FS to a crowning station CS and consists of a tubular member 10 having an arcuate axis disposed in a horizontal plane and a plurality of arcuately aligned and spaced jet apertures 11 extending along its lower extremity. A vertical manifold 12 connects a pressurized CO 2  gas supply 21 via a hand valve 20 to the member 10 and is horizontally bored so as to be adjustable on a support arm 13. Set screws 14 hold the manifold 12 in position on the end of arm 13. The other end of arm 13 is fixed by a collar 15 to a vertical post 17 which is integral with a second support arm 18 radially mounted on the filling apparatus by means of a vertical bolt 19. Collar 15 and set screw 16 provide horizontal angular and vertical adjustment of the assembly. Further horizontal angular adjustment is available from the mounting 19. The assembly is adjusted so that the axis of member 10 is in vertical alignment with a part of the path of the bottles extending from a filling station to a crowning station. The gas jets break down the foam and displace air from the bottles so preventing oxidation of contents after bottling.
Patent GB-341691-A (GB)
Title: Improvements relating to lever lid tins
IPC: B65D25/20
Filed: 1929-12-28
Abstract: 341,691. Lever-lids. ROBINSON & CO., Ltd., F. and ROBINSON, F. G., Southcoates Lane, Hull. Dec. 28; 1929, No. 39633. [Class 125 (iii).] Relates to lever-lid tins of the type in which the lid is provided with an annular flange which completely covers the annular depression or recess in the lever rim of the tin to prevent dirt from collecting therein. According to the invention the annular lid flange is bent upwardly to hold a device indicating the colour, quality &c. of the contents of the tin. The device may be of the kind disclosed in Specifications 239,442 and 291,713, [both in Class 125 (iii), Stoppers &c.]. In Fig. 3 the annular flange 4x of the lid 4 is formed with a depending tongue 6 which coacts with a slot or recess 7 in the clip portion of the device 5 to prevent lateral displacement along the rim thereof.
Patent GB-818848-A (GB)
Title: Improvements relating to inflation valves of inner tubes of pneumatic vehicle wheel tyres
IPC: B60C29/04
Filed: 1956-12-31
Abstract: 818,848. Valves. PIRELLI S.p.A. Dec. 31, 1956 [Dec. 30, 1955], No. 39698/56. Class 135. A tyre inner tube inflating valve has means for providing an air-tight seal of the hole in the rim through which the valve stem extends comprising an annular body of rubber or like resilient material encircling the valve stem and having a peripheral portion which is pressed against the outer edge and/or wall of the hole in the wheel rim by clamping means forming part of the valve assembly. In the Figure the annular body is provided by a boss like enlargement 5 of the wall of the inner tube 3 and is pressed into contact with the wall of the hole 6 in the wheel rim 1 by means of a spreader ring 11 acting under the thrust of a clamping nut 8 threaded on the valve stem 4. In another embodiment the annular body is provided by a gasket having an axially directed peripheral flange portion adapted under the pressure of a clamping nut threaded on the valve stem to telescope over a boss-like enlargement of the inner tube wall surrounding the stem and to seal the hole in the wheel rim. In both embodiments the camping nut may be replaced by the valve cap provided with an axial extension of its peripheral wall to act as the clamping means.
Patent GB-1162519-A (GB)
Title: Improvements in Compositions for Moulds.
Inventor: HASHIMOTO KENZO
IPC: B22C1/02
Filed: 1966-09-06
Abstract: 1,162,519. Refractory compositions. K. HASHIMOTO and H. KANAZAWA. 6 Sept., 1966, No. 39708/66. Heading C1H. [Also in Division C3] A composition for moulds comprises, in parts by weight, foundry sand 100; cement 6-12; water 5-12; water soluble surfactant 0À3- 5.0; 0À1-1À0 water glass and 0À5-3À0 of a heat-producing element e.g. Mg or Al, and air cell removers are optional. Suitable surfactants and air cell removers are listed.
Patent GB-864070-A (GB)
Title: Improvements in or relating to rotary duplicating machines
IPC: B41L11/00
Filed: 1957-12-23
Abstract: 864,070. Copying documents. RITZERFELD, W., and RITZERFELD, G. Dec. 23, 1957 [April 24, 1957], No. 39878/57. Addition to 839,389. Drawings to Specification. Class 100(2) In a rotary duplicating machine of the general construction disclosed in the Parent Specification with reference to Figs. 5-10 of the drawings accompanying said Specification, the contacts K associated with the rotary switching member 265 are connected to the keys T of the keyboard 36 through releasable plug-and-socket connections, so that when a different printing programme is required (i.e. an arrangement whereby certain combinations of lines on the master sheet are printed by the pressing of certain single keys), the keyboard can be removed and replaced by a different one.
Patent GB-1096606-A (GB)
Title: Improvements in or relating to optical extensometers
Inventor: GRIFFITHS JOHN HARVEY
IPC: G01B11/16
Filed: 1963-10-09
Abstract: 1,096,606. Photo-electric extensometers. INSTRON Ltd. Oct. 7, 1964 [Oct. 9, 1963], No.39893/63. Heading G1A. An extensometer of the type in which photoelectric viewing heads are made to follow marks on a specimen when a tensile load is applied thereto is provided with automatic means to align the heads with the marks prior to testing. A head 7 comprises a pair of differentially connected photo-cells which give a zero output when accurately focused on the line. The head is initially located just above the mark 5, and driven downwards by a motor 14, and the maximum value of the head output is stored on a capacitor 25B by means of a self-balancing potentiometer 22, 23. After a time determined by a timer 34, motor 14 is reversed and the output of the head 7 is applied to a comparator 25C which compares it with the signal stored on capacitor 25B as the mark is rescanned. When 90% equality is detected, relay 26 operates to disengage the clutch 14A and switch the output of the head to a servomotor 13 which aligns the head and the mark accurately by reducing the head output to zero. When both heads are so aligned with their marks, a recorder is energized, and the test load applied to the object 3. Servomotor 13 drives the head 7 to follow the mark, the movements of the two heads being detected by the synchros 20, substrated from one another and applied to the recorder or a meter. On conclusion of the test a reset button 39 is pressed and motor 14 drives the head upwards until a micro-switch operates the brake 28 to hold the head in a preset position. As described, servomotor 13, motor 14 and brake operate on a single shaft co-operating with a rack 8 carrying the head 7.
Patent GB-1521754-A (GB)
Title: Centrifugal pump having radial blading
IPC: F04D29/44
Filed: 1975-09-30
Abstract: 1521754 Centrifugal pumps KLEIN SCHANZLIN & BECKER AG 30 Sept 1975 40020/75 Heading F1C The operation of a centrifugal pump comprising a rotor surrounded by a diffuser having diffuser blades 2 is stabilized by means of a baffle comprising one or more cylindrical pins 3 near the diffuser entry.
Patent GB-1284946-A (GB)
Title: Oil pressure controlling device for high inertia loads
IPC: F15B11/02
Filed: 1969-08-11
Abstract: 1284946 Hydraulic motor control circuits KAWASAKI JUKOGYO K K 11 Aug 1969 [14 Aug 1968] 40127/69 Heading F1P A hydraulic motor MF representing a highinertia load is driven by a pump P via a direction control valve V and a spool valve assembly 1 which opens the return passage from the motor MF to the tank T when pressure fluid is applied to it. A relief valve assembly 3 is arranged to bypass pressure fluid to the return passage to prevent excess pressure build-up during stating and stopping of the motor MF. When the valve V is moved to direct pressure, fluid to the port A, in the spool valve 2, the fluid passes through passages 14, 14' and bores 60 in the spool valve 2 to the central passage 18 in the spool 4. Valve 7 is moved to the left against a weak spring 8 and fluid flows via passages 16, 63 to the annular chamber 31 in the relief valve 3 and thence to the motor MF. Pressure fluid from the port A v  in the spool valve 2 also passes via passage 29 to the chamber 52 and then via radial bore in the spool 4 and a check valve into the chamber 27. The spool 4 is consequently moved to the right and the return passage 63' from the motor MF is then connected via passage 17 and groove 21 in the spool 4 to the passage 15 and port B, back to the tank T. If on starting the motor MF the pressure in the conduit 63 exceeds a predetermined pressure fluid flows through nozzle 41 into the relief valve 3 through radial bores 64 to move the valve seat cylinder 39 to the right and consequently unseat the valve 33 to allow the fluid to enter the by-pass 45. Both valves 33, 34 are then forced outwardly to allow flow of fluid through radial bores 64' nozzles 42 and annular recess 32 back to the return conduit 63'. Pressure fluid in the by-pass 45 also flows through restricted orifices 40, 40' in the valves 33, 34 and axial bores in the rods 36 to spaces 48 in the end caps 38 to force the members 37 inwardly to further compress the springs 43, 43'. When the control valve V is moved to stop the motor the spool valve 2 is again centralized thereby shutting off the return passage to the tank T. Pressure build up in the return line 63' causes the valve seat cylinder 39 to move to the left and unseat valve 34 and then valve 33 to allow fluid to return to the motor MF. During steady running conditions the valve seat cylinder 39 returns to its central position to enable both valves 33, 34 to seat and thereby close the by-pass port 45.
Patent GB-828119-A (GB)
Title: Piston and piston ring assembly
IPC: F16J9/00
Filed: 1957-12-30
Abstract: 828,119. Pistons. JOY MANUFACTURING CO. Dec. 30, 1957 [Jan. 10, 1957], No. 40256/57. Class 122 (1). The surfaces of the grooves 6 of an aluminium alloy piston 4 for receiving a carbon piston-ring 8 are anodized with an oxide coating in order to resist electrolytic corrosion by contact of the carbon ring with the aluminium alloy. The oxide coating may be formed on the surface of the groove 6 by using either the chromic or sulphuric acid anodizing processes, and the surface of the coating which is normally porous may be sealed by immersing the piston in hot water. Although the entire outer surface of the piston may be anodized, it is stated that it is only necessary to anodize the surfaces of the grooves 6. As shown in Fig. 2, each ring 8 comprises six parts 10, 20 which are in such mating relationship that they are urged outwardly into contact with the cylinder wall 2 by springs 32 connected at their ends to reaction members 40 located in the parts 20.
Patent GB-1525768-A (GB)
Title: Cationic dyestuffs of the pyrazolium-indole type
IPC: C09B44/14
Filed: 1976-09-29
Abstract: 1525768 Cationic dyestuffs of the pyrazoliumindole type PRODUITS CHIMIQUES UGINE KUHLMANN 29 Sept 1976 [30 Sept 1975) 40347/76 Heading C4P Novel dyestuffs of the formula wherein X is H, halogen, or OCH 3 ; R, is alkyl; R 2  is H, halogen or NO 2 ; R 3  is H, alkyl, cyanoalkyl or hydroxyalkyl; R 4  is H, alkyl or aryl; and A- is a monovalent anion arc prepared by alkylation of dyestuffs of the formula which in turn are prepared by direct diazotization and coupling. The novel dyestuffs are used for dyeing fibres based on polymers and copolymers of acrylonitrile and on polyesters and polyamides modified by acid groups. Specification No. 1,111,014 is referred to.
Patent GB-1154958-A (GB)
Title: Valve with Lubricated Valve Seat
Inventor: ELLIS FRANK VERNON
IPC: F16K5/06
Filed: 1967-09-04
Abstract: 1,154,958. Valves. CAMERON IRON WORKS Inc. 4 Sept., 1967 [9 June, 1967], No. 40369/67. Heading F2V. A lubricated valve has a seat 25 engaged by a valve member 13, and lubricant is supplied through the seat via a passage 31a and groove 30. The seat is sealed to the valve body by a seal ring 36 and is backed by a spring washer 38. Passage 31 opens from a lubricant chamber formed conjointly by the seat, the valve body, the washer 38 and the seal ring 36, the lubricant being supplied externally through a check valve 33. The washer 38 functions as a relief valve to relieve overpressure in the chamber. As shown, the device is applied to a rotatable ball plug valve which includes a three-part body welded at 22. An additional spring washer 43 protects the seal. To even wear, the seat is rotated each time the valve is opened and closed, by a dog (27) on the valve member engaging teeth 28 on the seat.
Patent GB-1262264-A (GB)
Title: Improvements in or relating to vehicle disc brakes
Inventor: RATH HEINRICH BERNARD
IPC: F16D55/228
Filed: 1968-04-05
Abstract: 1,262,264. Disc brakes. GIRLING Ltd. 14 March, 1969 [5 April, 1968], No. 40369/71. Divided out of 1,262,263. Heading F2E. The subject-matter of this Specification is identical with that described in Specification 1,262,263, namely a disc brake caliper formed in two halves, but the claims relate to the arrangement in each half of two side-by-side hydraulic cylinders and pistons interconnected so that each opposed pair is independently operated.
Patent GB-1127578-A (GB)
Title: Improvements in or relating to threading devices for sewing machines
IPC: D05B87/02
Filed: 1967-09-04
Abstract: 1.127,578. Needle threaders. JANONE SEWING MACHINE CO. Ltd. 4 Sept., 1967 [7 Sept., 19661, No. 40373/67. Heading D1G. A needle-threading device comprises a base securable to the presser bar of a sewing machine, a guide shaft slidable in the base, a threading element carried by the guide shaft and having a tip portion extendable through the needle eye, first means resiliently biasing the guide shaft away from the needle, and second means resiliently biasing the threading element into a retracted position within the guide shaft. A bracket 4, secured by a screw 25 to the presser bar 1, is formed with a square crosssectional channel 8 slidably receiving a hollow, square cross-sectioned guide shaft 9. A spring 21, connected between bracket 4 and a lug 11 on shaft 9, biases the latter rearwardly normally to engage lug 11 with the front edge of channel 8. A bar 14, slidable within shaft 9, is biased rearwardly 'by a spring 19 stronger than spring 21 and interposed between a flange 12 on shaft 9 and a knob 18 on bar 14. The inner end of bar 14 is formed with a slot 15 traversed by a pin 17, the outer ends of which project through respective slots 13 formed in channel 8. A bar 16 is pivoted at its inner end on pin 17 and is formed at its outer end with a hook 20 normally located within shaft 9. For threading, the needle 22 is fully raised, and knob 18 is pressed, initially to move shaft 9 against spring 21 until flange 12 engages the rear end of channel 8 and needle 22 is located in a V-shaped notch 10 formed in the front of shaft 9, and then to move bar 14 against spring 19 until hook 20 passes through the needle eye 28. Thread is then laid in hook 20 and knob 18 is released. A notch 29, formed in bracket 4, has a sharpened thread-cutting edge 6.
Patent GB-895320-A (GB)
Title: An improved combined boat carrying trailer and launching trolley
Inventor: TERRY NORMAN VICTOR
IPC: B60P3/10
Filed: 1959-11-28
Abstract: 895,320. Trailers. TERRY & SONS Ltd., HERBERT. Nov. 28, 1960 [Nov. 28, 1959], No. 40509/59. Class 108(1). A boat is retained on a trailer by transverse members d, h, provided with adjustable clamps f and secured to the trailer chassis by J-shaped rods e having wing-nuts d<SP>2</SP> at their upper ends. The rear member h has a pivoted stand h<SP>1</SP> thereon so that when an end of the member h is engaged in the sleeve a<SP>6</SP> attached to the chassis and that corner of the chassis raised it may be supported on the stand h<SP>1</SP> to enable the wheel supporting arms b<SP>1</SP> to be rotated as desscribed in Specification 882,834.