baber/WOPTO huggingface dataset:
Patent GB-581993-A (GB)
Title: Improvements in and relating to methods for preventing fracture of pipes or tubular containers due to internal pressures developed during freezing of liquids therein
IPC: F16L53/00
Filed: 1943-11-06
Abstract: 581,993. Pressure relieving devices. POWER, R. F. Nov. 6, 1943, No. 18460. [Class 135] To prevent a pipe or tubular container from bursting when the liquid therein freezes, the pipe is provided with a compressible resilient element continuous between joints in the pipe and projecting into the interior from the internal wall so that an increased cross-sectional area can be occupied by the liquid at freezing and the formation of a layer of ice as a complete sleeve will be prevented. In one embodiment, the pipe 1, Fig. 2, is provided with a longitudinal, diametrical partition 2 of aerated or inert gas-filled rubber, the partition being a tight fit in the pipe or being adhesively secured therein. The gas filling may be at atmospheric or higher pressure. Separate lengths of the partition are held together by abutting channelshaped members 5, Fig. 3, fitted on the ends of the strips, the members 5 having teeth to grip the rubber and being formed with encircling positioning washers 3 which can be gripped between two lengths of pipe. Alternatively, two partitioning strips can be connected by plates placed on each side of the strips and eyeletted 'or rivetted together. Further embodiments comprise strips 2a, Fig. 7, of triangular section covered by bias fabric stitched at 12, strips 2b, Fig. 9, set in grooves in the pipe or adhesively secured thereto and provided with longitudinal holes 14 in the ends of which are inserted sealing plugs serving also to align and connect contiguous strips together, or strips 2, Fig. 10, can be adhesively secured to the inside of the pipe. According to the Provisional Specification, a partition element of rectangular cross-section has its edges formed as sealed air tubes running the length of the partition.
Patent GB-260032-A (GB)
Title: Improvements in and relating to electrically-driven lawn-mowers
IPC: A01D34/47
Filed: 1925-07-20
Abstract: 260,032. Watson & Sons, Ltd., H., and Watson, E. July 20, 1925. Rollers, garden.-In a lawn-mower in which the rotary cutter is driven by an electric motor mounted within the main roller a, the latter is divided transversely, one half fitting into the other as shown at a<2>. The ends of the roller a may be solid, or may comprise radial arms or spokes having the spaces between them filled in with wire netting or gauze. An aperture a<3> may be provided in the roller to allow of access to the brushes of the motor. The roller a is mounted on bushes or ball bearings on hollow shafts f mounted in the side frames b and attached to the casing g of the motor.
Patent GB-1061346-A (GB)
Title: Improvements in or relating to photographic apparatus
Inventor: REIMANN HUBERTUS
IPC: G03B7/083
Filed: 1965-05-03
Abstract: 1,061,346. Exposure control circuits. PENTACON DRESDEN KAMERA-UND KINOWERKE, VEB. May 3, 1965, No. 18505/65. Heading G2A. An electronic timing circuit includes an oscillator the oscillation of which can be delayed according to the required exposure time, and which, on commencement of oscillation, provides an impulse to an electromagnet which terminates the exposure period. The oscillator consists of a silicon transistor 1 and transformer 2. The secondary winding 3 of the transformer is connected between the base of transistor 1 and an RC member consisting of a photo-cell 5 and capacitor 7. The secondary winding 8 is connected to the base of a transistor 11 acting as a grid leak detector. In use, the switch 22 is closed to charge up condenser 7, which causes a positive potential to be applied to the base of transistor 1, so blocking it. In front of cell 5 is a grey filter 23, and also a diaphragm (not shown) which is set by hand. A switch 16, which is coupled to a further switch 17 (and also to the shutter release), is set to its first position, which includes in circuit a relay 18 giving a visual signal regarding exposure conditions. If this is satisfactory, switch 16 is brought, by operation of the shutter release, to its second position. In this position, a negative potential is applied via switch 17 to the base of transistor 11, which is thus opened and so maintains in the conductive state an electromagnet 12 which holds open the shutter. At the same time, switch 22 is opened, allowing capacitor 7 to be oppositely charged through cell 5. Thus the positive blocking voltage on transistor 1 is reduced until it suddenly begins to oscillate. This causes transistor 11 to be blocked, and hence electromagnet 12 is de-energised, so allowing the shutter to close and terminate the exposure. The transistor 11 may constitute the input of a D.C. amplifier, in which case the circuit variant shown in dotted lines is produced. For manual instead of automatic setting, a change-over switch connects in circuit one of a number of fixed resistors 6, instead of the cell 5.
Patent GB-1460241-A (GB)
Title: Apparatus for transferring a finely-divided solid material between chambers at different pressures
IPC: C10B31/00
Filed: 1975-05-02
Abstract: 1460241 Rotary pocket feeders SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 2 May 1975 [30 May 1974] 18549/75 Heading B8A Material is transferred from an inlet 15 to an outlet 17 by means of a sphere 4 which is rotated about a horizontal axis 5 and has a blind core 6 housing a reciprocable piston 7, sealing members 12 being provided between the sphere 4 and its housing 3. Nitrogen under pressure is admitted to the housing at 13.
Patent GB-796960-A (GB)
Title: Means for securing tanged or tongued tools and the like in their holders
IPC: B25G1/00
Filed: 1955-06-28
Abstract: 796,960. Tool handles. DAVIES, D. E. Sept. 28, 1956 [June 28, 1955], No. 18581/55. Class 61. The tang 2 of a file 1 is notched at its four corners to receive the coils of a wire spring 5. The outer half of the thickness of the wire bites into the wood of the handle 3 to lock the tang against axial movement. The upper extremity of the wire is turned outwardly at 6 to enter the handle 3 radially. As shown, the wire is of square section. Alternatively it may be of round form on its inner side to fit round notches in the tang 2 and be of angled form on the outer side to bite into the handle 3.
Patent GB-674579-A (GB)
Title: Improvements in adjusting devices for windows swingable about a central axis
IPC: E06B3/34
Filed: 1950-07-25
Abstract: 674,579. Windows. PERSSON, E. G. July 25, 1950 [July 26, 1949; Oct. 13, 1949], No. 18593/50. Class 20(iii). A window sash 12 is rotatable about a horizontal axis 14 by means of displaceable pins 16 in the frame 10 or sash 12 engaging in oblique slots or slits 18 in the sash or frame respectively, the slots or slits being closed at each end and provided with an opening 38 between the ends through which the pins may be passed to reverse the window sash. The pins 16 are moved vertically by means of rods 20 on which they are arranged, this motion being imparted by a crank 22, gearing 24, shaft 26 threaded at the ends, nuts 28 on the shaft rods 30 coupled to the nuts, and chains 32 extending round the corners of the frame 10 to connect the rods 30 in the base member of the frame to the rods 20 in the side members. Locking pins 34 and/or 36 on the frame. may also be engaged with locking slots on the sash by this mechanism. Each rod 20 runs in a channel in the frame covered by a plate 44 having a straight slit 46 through which the pin 16 projects. A bearing 48 on the plate 44 supports hinge pins 50 on the sash to determine the swinging axis 14 which is inwardly spaced so that the sash tends to swing by its own weight towards the closed position, and the pin 16 is maintained in contact with the edge 40 of the slot 18 opposite the opening 38. The oblique slot 18 is formed in a plate 52 on the sash and includes one or more recesses 54 to mark certain ventilation positions as well as the opening 38 through which the pin 16 passes when the sash is manually moved to the reserve position. The 'pins 16 are in the upper ends of slots 46 and 18 when the window is closed, and as they move downwardly on operation of the crank 22 the sash is swung outwardly on pins 50, the position of maximum ventilation being shown in Fig. 8. The sash 12 in Fig. 12 is operated by means of a similar pin 16 and slot 18, but swings by means of two offset pivots. It first swings about pins 62 in bearings 58 with pins 64 raised above bearings 60 until the pins 64 seat in the bearings 60 as at 64<SP>1</SP> to act as the sash pivots, with pins 62 raised as at 62<SP>1</SP>. A plurality of window sashes may be operated by means of pins 16 and slots 18. The pins 16 may be displaced by means of nuts on threaded rotating spindles, and the pin 16 and slot 18 may be provided at one side only.
Patent GB-180587-A (GB)
Title: An improved glazing bar for glass roofs or the like
IPC: E04D3/14
Filed: 1921-07-09
Abstract: 180,587. Young & Marten, Ltd., and Edwards, E. M. July 9, 1921. Addition to 163,460. Glazing.-The antiseptic felt or other packing used in the astragal and capping, according to the invention described in the parent Specification, is omitted and asbestos packing h of cord is arranged on each side of the glass in grooves j in the bar and capping.
Patent GB-987033-A (GB)
Title: Improvements in sheet-feeding apparatus
Inventor: KALMAN PETER GABOR
IPC: B65H3/54
Filed: 1963-05-10
Abstract: 987,033. Feeding sheets. CROSFIELD ELECTRONICS Ltd. March 16, 1964 [May 10, 1963], No. 18638/63. Addition to 938,212. Heading B6B. The apparatus for separating sheets, such as cheques of assorted sizes, from a holder as described in the parent Specification, is modified by the provision of a blade which is repeatedly moved to enter the space between the sheet being separated and the next sheet. As de3cribed in the parent Specification, each front sheet, from sheets 88 stacked on end and urged against a front plate 11, is separated by a rotating suction wheel 19 which acts on the sheet through a slot 14 to impart a curvature to the sheet to enable it to pass a restraining finger stop 17 arranged to protrude into the exit slot of the holder. The sheet cannot be separated by the wheel 19 until it is released by a second restraining device 26-30 which comprises a cyclically operable suction means acting on the trailing edge of the sheet. The modifications comprise a blade 89 which registers with a notch 90 formed in the end of the finger 17, and is given repeated movements in synchronism with the driven spindle 27 of the second restraining means to enter the space created between the first and second sheets by the suction wheel 19, and thus reduce friction between the sheets and facilitate separation of the first sheet. As described, the blade 89 moves in an elliptical path, and is secured to one end of a rod 95 which is restrained by a swivel bearing situated between its ends, the other end being freely mounted on an eccentric pin secured to a constantly driven wheel. In a modification, the blade 89 can be given a simple reciprocatory motion.
Patent GB-595608-A (GB)
Title: Applying protective coatings to surfaces
IPC: C04B41/50
Filed: 1944-09-29
Abstract: Sulphur, in a finely divided state, is sprayed on to surfaces and while being sprayed the sulphur is subjected to heat sufficient to fuse the particles and render them adherent.  The sulphur may be mixed, during or before spraying, with another finely divided substance, e.g., synthetic resin or an inert filler.  Alternatively, a material with a lower melting point than sulphur may be mixed with the sulphur to act as a binder.  A pigment may also be incorporated therein.  A spray gun such as is described in Specification 432,831, [Group XXIX], may be used. The coatings are useful in rendering surfaces resistant to acid, bacteria and vermin.
Patent GB-275208-A (GB)
Title: Improvements in and relating to electric circuit interrupters
IPC: H01H9/44
Filed: 1927-07-14
Abstract: 275,208. British Thomson-Houston Co.,. Ltd., (Assignees of Paul, W. E.). July 28, 1926, [Convention date]. Magnetic blow-outs. -The blow-out coil 16, which is included in circuit with the auxiliary contacts 14, 15 when the switch opens, is surrounded by a winding 22 which is short-circuited bv a contact 24 when the switch is closed and for a short period after the main contact 10 has opened. The winding 22 when short circuited, serves to reduce the impedance of the coil 16 and thereby prevents sparking at the main contact 10. The switch 24 opens before the auxiliary contacts 14, 15 separate and the coil 16 then exerts its full magnetic powers to blow out the arc.
Patent GB-480574-A (GB)
Title: Improvements in regenerators for use with external combustion air or gas engines
IPC: F02G1/057
Filed: 1937-07-06
Abstract: 480,574. Hot air and gas engines. NEW ENGINE CO., Ltd., and MALONE, J. F. J. July 6, 1937, No. 18764. [Class 7 (i)] A regenerator for a hot air or gas engine comprises a casing 1 in which are arranged a number of substantially paralled straight tubes 7, the ends of which are secured in plates which close the space exterior to the tubes from the interior of the tubes, the casing adjacent to the plates being enlarged as compared with the intermediate part of the casing to facilitate the flow of gas into and from the space. As shown in Fig. 1, two casings 1, 2 are connected in series by pipe connections 3, 4. Air or gas from the high-pressure side of the engine circuit passes through the inlet 5, tubes in the casing 1, connection 3, tubes in the casing 2, and outlet 8 ; while low-pressure gas passes through the inlet 11, casing 2, connection 4 and casing 1 to the outlet 9. The tubes 7 are supported by tube plates 6 and by spacing walls 12 formed of short lengths of thin tube 13, Fig. 5, spotwelded together at 14.
Patent GB-404615-A (GB)
Title: Improvements in elastic equipoising mechanisms
IPC: F21V21/26
Filed: 1932-07-04
Abstract: 404,615. Stays for hinged articles. CARWARDINE, G., 17, Macaulay Buildings, Bath. July 4, 1932, No. 18812. [Class 65 (i).] A resilient device for counterbalancing the hinged lid 54 of a cabinet comprises a pair of parallel links 51 pivoted to fixed points on the cabinet and to a connecting member 53, a second pair of parallel links 52 connected between the member 53 and a lever 56 pivoted at 57 to the cabinet 55, so that the lever 56 swings in unison with the lid, and a spring 58 connected between the lever 56 and a point 60 on the cabinet, the spring having the characteristic that its pull is proportional to its length or to the distance apart of the points between which it acts. The spring is wound with an initial tension and is arranged to exert its minimum pull when the lid is in its highest position. The position of the anchoring point 60 may be adjusted. Specification 131,229, [Class 52 (v), Window, stair, and like furniture &c.], is referred to.
Patent GB-1421544-A (GB)
Title: Process for treating waste cyanide solutions
IPC: B01J41/04
Filed: 1973-04-18
Abstract: 1421544 Removing ferrocyanide and ferncyanide from waste solutions, FUJI PHOTO FILM CO Ltd 18 April 1973 [21 April 1972] 18851/73 Heading C1C [Also in Division G2] Ferrocyanide and/or ferricyanide ions are removed from a solution containing them by contacting the solution with a weakly basic anion-exchange resin containing at least one of primary, secondary and tertiary amine groups as the active exchange groups in the presence of ammonium ions and thiosulphate ions, the ions to be removed being adsorbed on the resin. Preferably the resin has as base material a copolymer of (a) styrene and divinylbenzene, or (b) methacrylate and divinylbenzene, or (c) phenol and formaldehyde. The resin may from time to time be regenerated for reuse, e.g. by contact with an alkali, and the regenerating substance may be treated after use to recover ferricyanide and/or ferrocyanide therefrom. The process has particular use in the treatment of solutions derived from photographic reducer solutions for printing materials or from a washing or rinsing liquid derived from a reducing process employing such solutions (see Division G2). Specification 1,421,543 is referred to.
Patent GB-343859-A (GB)
Title: Projectile with numerous applications
IPC: F42B12/48
Filed: 1930-06-20
Abstract: 343,859. Projectiles. BRANDT, E. W., 101, Boulevard Murat, Paris. June 20, 1930, No. 18859. Convention date, June 20, 1929. [Class 9 (i).] A projectile 1 is made with an annular weakened zone 2 occupying a small fraction of the ogival front portion of the projectile in conjunction with a small detonator 4 situated wholly within this weakened zone and separated from the walls thereof. The zone 2 may be a complete thinned annulus or a series of plugged holes around the projectile. The projectile is intended mainly for practice purposes ; but it may also be used as a signalling, smoke-producing, incendiary, or message-carrying projectile.
Patent GB-711679-A (GB)
Title: Tris (tetraalkyldiamidophosphoryl) phosphates
IPC: C07F9/24
Filed: 1952-07-25
Abstract: The invention comprises a tris-(tetra-alkyldiamidophosphoryl) phosphate of the formula <FORM:0711679/IV (b)/1> wherein each R represents an alkyl radical containing from 1 to 4 carbon atoms. Such compounds are obtained by heating a mixture of at least three molecular proportions of a compound of the formula <FORM:0711679/IV (b)/2> with one molecular proportion of a compound of the formula POY3 in which X is chlorine or RO- and Y is the other member of this pair of substituents and each R is an alkyl radical containing from 1 to 4 carbon atoms, at a temperature of from 90 DEG  to 135 DEG  C. until the evolution of alkyl chloride of the reaction is substantially complete.  The alkyl chloride may be separated as formed from the reaction mixture.  The process may be carried out continuously and/or under pressure.  In examples tris - (tetra - methyldiamidophosphoryl) phosphate is obtained by reacting (1) tetramethyldiamidophosphoric chloride and triethyl phosphate; (2) O-ethyl tetramethyldiamido phosphate and phosphorus oxychloride; (3) tris-(tetrabutyl - diamidophosphoryl) phosphate is obtained from tetrabutyldiamidophosphoric chloride and triethyl phosphate; (4) tris-(N,N - dimethyl - N1,N1 - dibutyldiamidophosphoryl) phosphate is obtained from O-methyl N,N - dimethyl - N,N1 - dibutyldiamido - phosphate and phosphorus oxychloride.  Similarly prepared are the N,N1-dimethyl - N,N1 - diisopropyl -, N,N - dimethyl-N1,N1 - diisopropyl -, N,N - dimethyl - N1,N1-diethyl-, and tetraethyl derivatives.  The products are useful as parasiticide ingredients. The O - alkyl tetra - alkyldiamidophosphates are obtained by reacting a tetra-alkyldiamidophosphoric chloride with a sodium alcoholate. The tetra-alkyldiamidophosphoric acid chlorides are obtained by reacting phosphorus oxychloride with one or two amines of the formula RR1NH where R and R1 are the same or different alkyl radicals.
Patent GB-130613-A (GB)
Title: Improvements in Wrenches.
Inventor: FERGUSON ROBERT BENJAMIN
IPC: B25B13/14
Filed: 1919-07-30
Abstract: 130,613. Ferguson, R. B. July 30, 1918, [Convention date]. Pivoted and sliding jaw wrenches. - A pipewrench adapted also for nuts comprises an inner jaw and handle of U-section, an outer jaw having a shank movable in the handle and formed with rack teeth engaging a worm on a worm shaft pivoted on the inner jaw and a spring in the handle for holding the worm and rack teeth in engage. ment. A pivoted loop may be provided to hold the worm shaft and toothed shank in the handle with the jaws parallel for use on nuts. As shown, the U-section handle 5 has lateral projections between which the block 7 forming the inner jaw is riveted at 8. A recess in the block 7 receives the end of the worm shaft 9, which is pivoted therein at 10. A worm 12, held revolubly on the shaft 9 by a sleeve 13, engages teeth 16 on the shank 14<a> of the outer jaw 15. A spring 14 in the handle 5 presses the shank 14<a> and worm outwardly, holding the worm and teeth in engagement, the outward movement being limited by the engagement of the worm shaft 9 with the block 7. A luop 17 of wire may be pivoted in the handle for engagement on the end of the shaft 9 to hold the shank 14a depressed and the jaws parallel.
Patent GB-530668-A (GB)
Title: Improvements in apparatus for controlling the fuel supply of internal combustion engines
IPC: F02D1/00
Filed: 1939-06-29
Abstract: 530,668. Fluid-pressure servomotor systems. BOSCH GES., R. June 29, 1939, No. 18922. Convention date. July 30, 1938. [Class 135] [Also in Group XXVII] In apparatus for controlling the fuel supply to engines in accordance with the pressure and temperature in the induction pipe, the pressureoperated device is connected to the fuel control by an intermediate member which is variably coupled to an operating-member connected to the thermostat, so that the movement of the operating-member has a progressively larger effect on the fuel control as the quantity of fuel supplied is greater. Fig. 1 shows a diaphragm 7 subjected by a pipe 12 to induction-pipe pressure and connected to the pivot 5 of a bellcrank 4, 25, which is connected at 26 to the fuel-pump control 2, and has a pin 24 sliding in a slot 23 in one arm of a lever 20, 22 pivoted at 21 and connected by links 18, 19 to the thermostat 17. Variations in induction-pipe pressure cause movement of the bell-crank 4, 25 and its pivot 5 bodily, the pin 24 sliding in the slot 23, and the effect of this on the fuel control 2 is varied as the arm 22 of the thermostat-actuated lever becomes more or less inclined owing to changes of temperature. Fig. 12 shows a servomotor control in which the pressureactuated diaphragm is connected by a rod 60 to an annular slide 62 containing a valve 65 and surrounding a servomotor piston 64 connected by a rod 81 to the fuel control. The valve 65 has operating edges 67, 68 corresponding to spiral grooves 73, 74 on the periphery of the piston 64, these grooves having connections 75, 76 and 78, 79 to the opposite ends of the piston respectively. Oil is supplied to the chamber 69 between the edges 67, 68 through passages 71, 72. Thus, as the slide 62 is moved axially by variations in induction-pipe pressure, oil is supplied to one or other end of the piston to cause it to follow in the same direction as the slide. The action of the valve 65 is varied according to changes in temperature, by means of a thermostat-actuated arm 98 connected by its pivot 97 to a slotted arm 95 engaging a pin 92 on the valve, whereby the valve is moved angularly over the piston 64, and the relation of the edges 67, 68 to the spiral grooves 73, 74 is correspondingly varied.
Patent GB-437975-A (GB)
Title: Improvements in buffers for doors
IPC: B60J1/00
Filed: 1934-06-27
Abstract: 437,975. Door-stops. RUSSELL & SONS, Ltd., S., and RUSSELL, E. G., Wednesbury Road, Walsall, Staffordshire. June 27, 1934, No. 18944. [Class 65 (i)] A buffer and anti-rattling device for doors comprises a housing having at opposite sides openings through which project resilient or yielding parts having transversely - inclined faces for engaging a socket of suitable shape. The faces are preferably inclined in such a way as to give the device a dove-tail or undercut cross-section, and preferably also inclined in the longitudinal direction to give a tapering form in that direction. In the form shown the edges of the housing 2 are tapered longitudinally and transversely, and the projecting faces 6 of the inner member are correspondingly inclined. These faces 6 may form part of a block of rubber secured within the housing 2, but are preferably formed as metal wear-resisting shoes mounted on such a rubber block. Specification 437,974, [Group X], is referred to.