baber/WOPTO huggingface dataset:
Patent GB-1410795-A (GB)
Title: Fifth-wheel trailer couplings
IPC: B62D53/04
Filed: 1972-11-13
Abstract: 1410795 Fifth wheel couplings DUHOWARD 13 Nov 1972 [12 Nov 1971] 7365/75 Divided out of 1410794 Heading B7T A fifth wheel coupling means for joining a trailer to an automobile comprises a first frame means 50 mountable on the automobile, a second frame means 51 attachable to the trailer and a turntable assembly mounted on the frame means 51, the turntable assembly including rollers 60 61 transmitting the load of the trailer to a plate 52 mounted on the frame means 50 and a pivot pin 58 about which the rollers rotate, the pin 58 extending through an aperture 53 defined in the plate 52. A second plate 55 bolted at 69, 70 to the plate 52 includes a protuberance 54 which extends through the aperture 53 and itself has an aperture 56 to receive the pin 58 in a resilient mounting 57. The rollers 60, 61 are carried by a crossbar 62 which is connected to the frame means 51 by channel members 63, 64 and sleeves 65, 66, recessed detents 78 and 79 being provided in the plate 55 to receive the rollers 60, 61 thus acting as self-aligning means for the coupling. In addition, resilient shock-absorbing means 71 act between the rollers 60, 61 and the plate 55 of which the protuberance 54 is retained in the aperture 53 by self-locking means 67 and 68. In another form, Figs. 3 and 4 (not shown), the plates 52 and 55 are connected to one another in a preselected one of several locations along a line corresponding in use with the longitudinal axis of the automobile.
Patent GB-487620-A (GB)
Title: Improvements in or connected with horticultural glass frames
IPC: A01G9/20
Filed: 1937-03-15
Abstract: 487,620. Horticultural frames. BOULTON & PAUL, Ltd., and FFISKE, G. E. March 15, 1937, Nos. 7505 and 33812. [Class 20 (i)] Horticultural frames of the kind in which a number of independent frames are arranged side by side on front and rear members and occupy an inclined position, have one or both abutting side members A of adjacent frames provided with drainage grooves A<3> to drain away any moisture which may leak between the frames. The grooves in abutting frames may be ordinary curved recesses disposed either opposite to each other or in staggered relationship, or may be square in section, and in some cases, projections may be provided on one frame side to engage recesses in the abutting member of the adjacent frame. The glass sheets B are held in the frames by removable stops E, F, Fig. 1.
Patent GB-138479-A (GB)
Title: Improvements in die stocks
IPC: B23G5/04
Filed: 1919-03-26
Abstract: 138,479. Green, F. J. March 26, 1919. Stocks and dies. -A die stock has the dies mounted on one face thereof between guiding- ribs b which are discontinued at the centre of the die, and the face is provided with an edge bead d forming a recess to receive lubricant. A guiding-bush e is fitted so as to abut against the under surface of the die, or nearly so, to retain the lubricant at the cutting-part.
Patent GB-101936-A (GB)
Title: Improvements in connection with Saucepans, Kettles, and the like Utensils.
Inventor: KING WILLIAM
IPC: A47J36/34
Filed: 1916-05-29
Abstract: 101,936. King, W. May 29, 1916. Urns.-Tea and coffee urns, and other boilers are provided with a sheet a, Fig. 1, of asbestos or other fire-proof material mounted in a metal ring b, which is detachably or permanently secured to the vessel by means of clips d. The sheet may extend partly up the wall of the vessel, and a detachable jacket e, Fig. 5, secured by spring clips f may also be provided.
Patent GB-249856-A (GB)
Title: Improvements relating to traffic signals
IPC: G09F13/16
Filed: 1926-03-19
Abstract: 249,856. Gas Accumulator Co. (United Kingdom), Ltd., (Assignees of Svenska Aktiebolaget Gasaccumulator). March 26, 1925, [Convention date]. Reflector.-A traffic signal in the form of a triangle is provided at each of the corners with apertures adapted to receive triangular glass pyramids 5 acting as reflectors. The faces of the prisms are arranged to be flush with the front surface of the triangular frame 1. Covers 14 are fitted over the backs of the prisms for protective purposes and may be coated or plated to serve as reflectors. In place of a single pyramid at each corner a number of pyramids may be used. An additional reflector may be fitted at the centre of the horizontal side of the frame. 1. and in a modification the reflectors are fitted to the corners of the inner. edge of the hollow frame. Two frames may be mounted base to base to form a four-sided signal fitted with four reflectors.
Patent GB-126150-A (GB)
Title: An Improved Crutch for Invalids & the like.
Inventor: CUSACK HENRY EDWARD
IPC: A61H3/02
Filed: 1918-05-08
Abstract: 126,150. Cusack, H. E., and Montgomery, A. R. W. May 8, 1918. Crutches.-The arm rest of a crutch consists of a padded strap C fixed at one end D to the curved crutch head A and connected at the other end to a tension spring H attached to the crutch shaft. A guide-plate E keeps the movable end of the strap in position on the crutch head. In a modification, both ends of the strap C are connected to the crutch by means of springs.
Patent GB-650032-A (GB)
Title: Improvements in or relating to electric signal storage or demodulating circuits
Inventor: REEVES ALEC HARLEY
IPC: H04J3/04
Filed: 1947-03-20
Abstract: 650,032. Pulse modulation; pulse circuits. STANDARD TELEPHONES & CABLES, Ltd. March 20, 1947, No. 7725. [Classes 40 (v) and 40 (vi)] [Also in Group XL (a)] An electric pulse translator comprises a cold cathode gas-filled electric discharge tube having a discharge gap formed by two extended electrodes which are not parallel to one another (see Group XL (a)), means for applying a maintaining potential to the gap, means for applying an input pulse to produce across the gap a discharge which spreads along the electrodes and then collapses after the disappearance of the pulse, and means for deriving an output pulse from the discharge current of the gap. A pulse demodulation circuit, Fig. 1, comprises a discharge tube 1 having an anode 2, a cathode 4 inclined thereto, and an extra ionization control cathode 7, forming with the anode a permanently discharging gap. The potential of the maintaining battery 3 is such that, in the absence of pulses, no discharge occurs at the smallest' gap between the end 14 of the cathode and the anode, but when a pulse, modulated in width or amplitude, is applied between terminals 10 and 11 such a discharge occurs and the resulting ionization spreads rapidly along the surface of the cathode 4 to an extent depending on the width or amplitude of the pulse. At the end of the pulse the discharge collapses more slowly than it spreads, until it remains only at the end 14 of the cathode, and the process is then repeated for subsequent pulses. The varying current from cathode 4 is passed through the primary winding of a transformer 6 having connected across its secondary winding a low-pass filter 15 which passes the modulating frequencies to the output terminals 16, but not the pulse frequencies. A small condenser 17 may be connected across the primary winding of transformer 6 and the limiting resistance 5 to compensate for non-linearity of the cathode current-time curve. The condenser has the effect of reducing the impedance of elements 5 and 6 together to a low value for the high frequency components involved during the rapid spreading period. Variable resistance 19 and rectifier 18 connected to a tap on battery 3 may be added to the circuit to compensate for the change in voltage drop across the load impedance 5, 6 as the cathode current increases. The rates of spread and collapse may be increased by increasing the current through the auxiliary cathode 7. The circuit may also be used as a pulse integrator or to demodulate short time-phase modulated pulses. In the latter case a pulse generator is connected to terminals 11 and 20 and applies controlling pulses to the cathode 4. The controlling pulses comprise a positive portion and a negative portion which extinguishes the discharge completely just prior to the arrival of the signal pulses. Specification 639,827 is referred to.
Patent GB-932313-A (GB)
Title: Improved apparatus for dielectric heating
IPC: H05B6/80
Filed: 1961-03-02
Abstract: 932,313. Dielectric heating ovens. HUSQVARNA VAPENFABRIKS A.B. March 2, 1961 [March 4, 1960; July 6, 1960], No. 7733/61. Class 38 (4). A heating oven 1a for dielectric heating of say food or moulding compounds is connected to a main supply 85 through a transformerless power pack 32, providing voltage multiplication such as a voltage quadrupling circuit comprising capacitors 33 and rectifiers 36, feeding a magnetron generator 50, 51 through a relay 81 which is interlocked with an oven door closing mechanism. The relay 81 energization is delayed after actuating a start button 82 to allow the magnetron cathode temperature to stabilize. Another circuit enables one of a number of pre set treatment times to be selected by means of switches 80. The output of the magnetron is conducted to the oven through a waveguide 54. The inlet air for the magnetron cooling fan 41 cools the pack 32. The oven may additionally contain resistive heating elements for grilling. Specification 932,314 is referred to.
Patent GB-452932-A (GB)
Title: Improvements in devices for damping surfaces and for applying adhesives and the like
IPC: B43M11/02
Filed: 1935-03-13
Abstract: <PICT:0452932/III/1> In a damping or adhesive-applying device of the kind comprising a rubber trough supporting a rotatable rubber roller partly dipping into liquid contained in the trough, the roller 8 consists of a cylinderical block of sponge rubber having a smooth outer skin, and the trough is moulded with thickened vertical ribs 6 beneath recesses 5 provided to receive a spindle 9 of the roller. The spindle may be made of a synthetic resin or of hard vulcanized rubber, and, according to the Provisional Specification, a sleeve of rubber or other suitable material may be interposed between the spindle and the sponge rubber body of the roller.
Patent GB-413249-A (GB)
Title: Improvements in steam traps of the inverted bucket type
IPC: F16T1/30
Filed: 1934-03-12
Abstract: 413,249. Steam traps. DEWRANCE, SIR J., 165, Great Dover Street, Southwark, London. March 12, 1934, No. 7823. [Class 64 (ii).] In a steam trap of the inverted - bucket type, the cover 3 carries a plug 6 with a seating for a valve 13 carried by the float 10. The wall 10<a> is of light sheet metal with end pieces 11, 14 over which the sheet metal is bent. At the lower end, the sheet metal may be pressed into a groove 17. The float is guided by the valve 13 and by an inlet conduit 15 over which the member 14 slides. The member 11 is slightly conical, and an opening 20 is provided for escape of air.
Patent GB-1536290-A (GB)
Title: Reaction bonded silicon nitride ceramics
IPC: C04B41/85
Filed: 1976-02-27
Abstract: 1536290 Silicon nitride ceramics DEFENCE SECRETARY OF STATE FOR 26 May 1977 [27 Feb 1976] 07867/76 Heading C1J [Also in Division C7] The oxidation resistance of reaction bonded Si 3 N 4  is improved by impregnating with at least one compound which reduces to CaO, SrO, BaO, mixtures of these with iron oxide and mixtures of MgO and Al 2 O 3  corresponding to MgAl 2 O 4 . The impregnated body is then calcined, e.g. at 850‹ C., to effect reduction. Impregnation is preferably effected with a boiling solution or melt of a nitrate.
Patent GB-195618-A (GB)
Title: Improvements in vices
IPC: B25B1/16
Filed: 1923-03-20
Abstract: 195,618. Bobo, G. D., (Assignees of Rawling, A. W.). April 3, 1922, [Convention date]. Vices.-The body 12 of a foot-operated vice is mounted to turn horizontally in a plate 11 carried by the bench and supporting post 10, and is secured in its adjusted position by a screwoperated friction block 41, Fig. 8. The gripping movement of the sliding jaw 14 is effected by a pawl 1H adapted to engage a rack 17 on the shank 15 of the jaw, and pivoted on a pin 19 slidable in slots 20 in the body, the pin 19 forming one end of a pair of toggle levers 21, 22 the middle pivot of which is connected to a rod 23 having a ball and' socket connection 24 with the short arm 25 of a bell crank lever 26 formed with a foot piece 30, Fig. 2. A spring 37 connecting the lever 26 and post 10 tends to raise the foot piece 30 and in this position of the parts the pawl 18 is disengaged from the rack 17 by the engagement of its tail part with a cam 38 on the body 12. The foot piece 30 is held in its depressed position by a rack 31 upon it and a pinion 32 mounted on an arm 33 and prevented from turning in one direction by pawls 35. Release of the foot piece is effected by depressing the arm 33 against the action of a spring 34.
Patent GB-346937-A (GB)
Title: Improvements in or relating to cocks
IPC: F16K3/26
Filed: 1930-03-11
Abstract: 346,937. Draw-off cocks. BOEUF, E., 16, Rue des Faillettes, Ermont, Seine-et- Oise, France. March 11, 1930, No. 7954.. [Class 135.] A tubular valve particularly applicable for useon casks, comprises an inner member 11 with inlet and outlet ports 15, 16 slidably mounted in an outer member 10 having an inlet port 12 and a slot 13 engaged by a pin 14 on the inner member. A screw-threaded member 23 having a flange 26 working in a cylindrical chamber 27 is mounted on a rod 24 carried by the tube 11 and adapted when the valve is in the closed position to be manipulated by a head 25 to engage a correspondingly threaded part 22 in the outer tube. In the form shown the outer tube has a flange 30 adapted to be secured in a member 18 by a screwed ring 34 engaging a packing 33, but the tube 10 may be screwed into the member 18. The manipulating handle may be formed as a protecting cap and may be secured by a seal engaging ears on the cask and cap. The edges of the port 16 may be pressed inwardly to form a nozzle.
Patent GB-539169-A (GB)
Title: Mason's interchangeable tool
IPC: E04F21/00
Filed: 1940-05-03
Abstract: 539,169. Chisels. HENDERSON, J. May 3, 1940, No. 7955. [Class 61 (ii)] A mason's tool comprises a block with T-shaped slot in which is removably secured a T-headed chisel blade by means of the threaded end of the handle screwing into a tapped hole in the block, a second screw passing through a hole in the front of the block and a hole in the threaded end of the handle.
Patent GB-1495587-A (GB)
Title: Apparatus for producing wood wool slabs
IPC: B27N3/10
Filed: 1976-02-26
Abstract: 1495587 Moulding pre-screeded wood wool slabs TORVALE HOLDINGS Ltd 26 Feb 1976 [26 Feb 1975] 7983/75 Heading B5A A plurality of moulds are fed through a station at which a screed is fed into the moulds by a hopper reciprocating between the station and a screed mixer, and at further stations wood wool is applied to the screed and then compressed. As shown, abutting moulds 11 are fed by a chain conveyer 10 through a release agent applying station 12, and then beneath a feed box 14 that receives screed from a hopper 25. The hopper receives a screed of cement, lime, sawdust and water from a pan mixer 20, and is then moved by wheels 28 (driven by a motor 26) along channel rails 22. Valves 32 and 30 for the bottoms of mixer 20 and hopper 25 are opened and closed by cylinders 37, 38 operating links 35, 36. The reciprocating motion of the hopper 25 is controlled by microswitches. The screed in the moulds 11 is levelled by a doctor blade 15, and then a layer of wood wool coated with cement is applied at station 16. The material is compressd by a roller 17, the longitudinal edges trimmed at station 18, and at 19 the wool is cut transversely between moulds.
Patent GB-342578-A (GB)
Title: Improvements in and relating to pilot-valve steered slide valves
IPC: F22D1/30
Filed: 1930-03-12
Abstract: 342,578. Fluid-actuated valves. TORRE, E., 7, Via Serra, Genoa, Italy. March 12, 1930, No. 8072. [Class 135.] Valves controlled by pilot or relay valves.-A valve device particularly applicable for use in connection with a closed cycle feed water system for steam generators comprises a main distributing valve V actuated by fluid pressure under the control of an auxiliary valve D seating in the main valve, both main and auxiliary valves being connected to sliding spindles I, P pivoted to a floating lever L to which the controlling impulse is applied. In the form shown in the Figure the main valve is formed as a piston valve and is adapted to establish communication between a port S leading to the hotwell and either of the ports E, C leading to the delivery side of the suction pump and the condenser respectively. The inlet E is connected through a valve controlled bye-pass K and calibrated orifices F, F<1> with the chambers above and below the main valve. The pilot valve which controls the exhaust from these chambers is formed as a. piston valve and works in a seating having three sets of ports 1, 2, 3, the ports 2, 3 communicating with the upper and lower chambers respectively while the ports 1 lead to a passage U in the main valve connected to the branch C leading to the condenser. The spindle I is rotatably connected to the auxiliary valve and the spindle P has a flanged head W engaging a rib on the main valve. The controlling float G is housed in a chamber H connected at Z, Z<1> with the condenser casing and is rigidly attached to the lever L pivoted at X to the spindle I and having a forked part Y engaging a pivot on the spindle P.
Patent GB-1261281-A (GB)
Title: Adhesive composition
Inventor: CHEN JAMES LING
IPC: A61K6/00
Filed: 1969-02-14
Abstract: 1,261,281. Adhesive composition. E. R. SQUIBB & SONS Inc. 14 Feb., 1969, No. 8159/69. Heading C3P. An adhesive composition comprises a liquid alkyl cyanoacrylate monomer admixed with a colloidal silicon dioxide thickening agent, this silicon dioxide forming substantially the whole solid content and being present in a concentration of not more than 15% by weight of the composition. The monomer may have the general formula CH 2 =C(CN)COOR wherein R is a C 1-20  straight, branched or cyclic alkyl, and is preferably butyl - 2 - cyanoacrylate. The thickening agent is preferably amorphous or pyrogenic silicon dioxide with particle size of 0À01-0À5 micron.
Patent GB-297668-A (GB)
Title: Improvements in metal bending machines
IPC: B21D11/12
Filed: 1928-03-17
Abstract: 297,668. Wagenbach, A. Sept. 24, 1927, [Convention date]. Making wire articles; angular bending; coiling. -A rod-bending machine particularly for producing bends, screws, spirals, &c. employed in ferro-concrete construction comprises a vertical shaft projecting through a base plate and carrying a driver and a bending-arm freely rotatable on the shaft and adapted to be engaged and rotated by the driver and returned by a spring in the opposite direction. The vertical shaft 2 projecting through the base plate 1 has a hexagonal upper end to receive a disc 3 carrying the driver 6. The bending-arm 4 is loose on the shaft 2 and carries a roller 15 coacting with a roller 14 on the shaft; the driver engages a rib 9 on the arm and rotates it until it meets a stop 8, whereupon the driver is released and the arm returned in the opposite direction by a spring 5. The points at which the bar is bent are determined by the aid of a ledge 10 provided with holes 11 for abutment bolts 12 and with an end stop 13. The bend shown is produced by first forming the end hooks and then the intermediate bends. For forming the first end hook the rod is pushed between the ledge 10 and the abutment stud 16 with its end contacting the end stop 13 and the base plate stop 8 set in one of the base plate holes such that the bending arm is rotated through 180‹ before being released. After the second end hook has been formed in similar fashion the intermediate, bends are formed by setting the stop 8 to give a 90‹ swing of the bending arm. The bending arm 4 may be removed and the machine employed for making screw, spiral, &c. bends by fixing bolts or rollers in holes 17 or radial slots in the disc 3, or the disc may be removed also and rollers fixed by means of holes 18 in the base plate after the manner of a three-roll bender for making circular bends. The driving mechanism is controlled by a clutch treadle 20 and a hand lever 19.
Patent GB-1086254-A (GB)
Title: Improvements in and relating to the manufacture of semiconductor devices
IPC: H01L29/00
Filed: 1965-02-25
Abstract: 1,086,254. Semi-conductor devices. PHILCOFORD CORPORATION. Feb. 25, 1965 [Feb. 28, 1964], No. 8244/65. Heading H1K. A connection is made to the surface of a semi-conductor body by attaching a fusible wire connector to the surface of the body, enlarging the free end of the wire by thermally fusing the wire and making connection to the enlarged end of the wire. A series of gold wires 30 are joined to the surface 31 of silicon body 29 by thermocompression bonding at "nailheads" 32. When joined initially, the wires 30 are upstanding and each has a blob on the upper end thereof formed by the process of flamecutting the wire from its supply reel after bonding the other end to the body 29. The blobs are brought into contiguity and then melted by a flame to give a single blob 34 which is enlarged and displaced towards the body 29 by the action of the flame. The body 29 which is mounted on a stud 27 is placed within a holder together with stud 26 having thereon solder 59 which solder is brought into contact with gold blob 34 and melted to surround the blob and thus make contact therewith. The device may have up to 10 wires joined in a blob and is said to be suitable for high frequency and large current since the skin effect is minimized by a number of small wires.
Patent GB-862400-A (GB)
Title: Improved method of manufacturing glass envelopes for electron discharge devices
Inventor: FREEMAN GEORGE STANLEY PERCIVA
IPC: H01J5/24
Filed: 1957-03-13
Abstract: 862,400. Discharge tubes. BUSH & RANK CINTEL Ltd. March 13, 1958 [March 13, 1957], No. 8277/57. Class 39(1). [Also in Group XXIII] The manufacture of a glass envelope for an electron discharge device comprises the following steps in the order stated: forming two glass component parts with optically worked mating surfaces, polishing the surfaces, coating each surface with a glass frit of melting point below the softening temperature of the glass component parts, slowly heating the coated portions to a temperature slightfy below the softening point of the glass and above the melting point of the glass frit, allowing the portions to cool, mating the surfaces, again slowly heating the coated portions to a sealing temperature slightly below the softening point of the glass, briefly maintaining the temperature while urging the component parts together under light pressure, allowing the parts to cool to a temperature at which the frit glass is only just molten, applying additional pressure urging the parts together and allowing the whole to cool. The light pressure used is about one-half pound per square inch and the additional pressure about five pounds per square inch of joint area. For envelopes the interior of which in use will be at a pressure other than atmospheric, a pressure differential is produced between the interior and exterior so as to give in the envelope a distortion of about onehalf of that to which it will be subjected when in use. Glass frit composed of 87% PbO and 13% B 2 O 3  by weight is milled to pass through a 300 mesh per linear inch sieve and applied as a suspension in water.
Patent GB-1082067-A (GB)
Title: Improvements in or relating to load lifting jacks
Inventor: GRANGER BERTRAM DONALD
IPC: B66F3/12
Filed: 1965-02-26
Abstract: 1,082,067. Lever jacks. METALLIFACTURE Ltd. Feb. 16, 1966 [Feb. 26, 1965], No. 8278/65. Addition to 903,079. Heading B8J. A jack comprises a load-engaging platform 16 which is raised relative to a ground-engaging member 1 by rotating a lead-screw 4 by a nut 6. The platform is maintained in a horizontal attitude by parallel load-lifting arms 11, 12.