baber/WOPTO huggingface dataset:
Patent GB-463942-A (GB)
Title: Utilization of colliery shale and other waste bituminous shales
IPC: C04B7/30
Filed: 1935-08-08
Abstract: Colliery, oil, or like shales are mixed with calcium carbonate and if necessary with additional combustible, and burnt; the residue is ground, mixed with water, moulded and hardened by steam under pressure.  Asbestos, gravel, sand, crushed stone, and also gasgenerating substances such as aluminium powder may be added. The burnt mass may be moistened and allowed to hydrate, whereupon additional water is added for moulding.  A suitable steam pressure is 120 lbs. per sq. in. Specifications 455,039 and 456,780 are referred to.
Patent GB-336970-A (GB)
Title: Improvements in or relating to the working up of chromium ores
IPC: C22B34/32
Filed: 1929-07-22
Abstract: 336,970. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). July 22, 1929. Roasting.-Chromium ores which are to be worked up, for example with alkali carbonate in the presence of lime, dolomite, or bauxite, are subjected to a preliminary treatment consisting in heating in an oxidizing atmosphere to over 800‹C, with or without the addition of a small amount of an oxidizing material such as sodium or potassium nitrate.
Patent GB-761869-A (GB)
Title: Wideband microwave attenuator
IPC: H01P1/22
Filed: 1953-08-14
Abstract: 761,869. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd. Aug. 14, 1953 [Sept. 4, 1952], No. 22496/53. Class 39(1). A wideband microwave attenuator comprises a length of rectangular waveguide 2, a gas discharge device having an envelope 3 extending along and substantially internally of a major portion of the waveguide, a reservoir 10 of a light gas having high ionisation potential and high breakdown power and an anode 5 and cathode 6, the gas pressure being such that the mean free path of the electrons is of the order of the cross-sectional dimensions of the envelope while the ratio of the surface area to the free volume of the envelope within the wave-guide, the unit of length being the inch, is greater than 50: 1, preferably approximately 70: 1, and means for connecting a source 4 of ionising potential between the anode and cathode. The envelope 3 can be of rectangular cross-section, and can be tapered at 7, 8 to reduce reflections of the R.F. signal applied to the attenuator. In the construction shown in Fig. 2 the envelope comprises two lengths 11a, 11b of rectangular cross-section joined at one end by a capillary tube 11c connected to the gas reservoir, each length of envelope having a side tube near the other end leading to the cathode or anode. In the construction shown in Fig. 3 the envelope 17 is of cylindrical cross-section and contains a pair of strips 21, 22 of insulating material such as mica to increase the ratio of surface area to free volume of the envelope. In the constructions shown in Figs. 4 and 5 the envelope comprises a length of capillary tubing 23, 27 folded so that the discharge traverses the major length of the wave guide at least twice. Fillings can be helium or hydrogen at a pressure of approximately 1 mm.
Patent GB-898890-A (GB)
Title: Valve apparatus for venting gases from a pressurised fuel system
Inventor: SCHRADE HELMUT
IPC: B64D37/00
Filed: 1960-06-28
Abstract: 898,890. Fluid-pressure servomotor-control systems. FLUGZEUGWERKE DRESDEN VEB. June 28, 1960, No. 22553/60. Class 135. A valve appratus for venting gases from a pressurised fuel system comprising a first chamber 12 having a valve disc 3 for sealing the chamber from atmosphere, a pressure chamber 14 having means 10 for communicating with atmosphere, a rigid stem 4 comprising a duct 5 for providing communication between both chambers and carrying, at one end, the valve disc and, at the other end, a slidable piston 9 which forms a movable wall of the pressure chamber, and means 2 carried by a float 1 in the first chamber for closing off the end of the duct and for holding the valve disc in the closed position. The valve means 2 is guided in a perforated cage 6 which also serves to limit the travel between the float and the valve disc 3. In operation, when the pressure of air accumulated in the chamber 12 reaches a certain value, the float 1 drops thereby permitting the air to enter the chamber 14 via the duct 5. If the volume of air is low, it escapes to atmosphere through a number of small openings 10 in the piston 9 ; if, however, the volume of air is large, the pressure displaces the piston 9 and thereby opens the valve disc 3.
Patent GB-828927-A (GB)
Title: Improvements in or relating to an externally accessible control lever for a precision instrument such as a clock
IPC: G04B41/00
Filed: 1956-07-20
Abstract: 828,927. Clocks. JUNGHANS A. G. GEB. July 20, 1956 [July 20, 1955], No. 22554/56. Class 139 In a clock the pendulum starting lever 14 is mounted in a bush 15 and is bent to the shape shown in Figs. 1 and 2, the end 14b co-operating with the pendulum crutch and the end 14d<SP>1</SP> forming a handle. The lever is flattened at 14c<SP>1</SP> and a disc 16 is mounted thereon. The inner end of the sleeve 15 is tapered so that the sleeve may be forced into the bore. In other examples the lever in its operative position locks the striking mechanism and is retained by a coil spring or by a cup spring.
Patent GB-1318173-A (GB)
Title: Timepiece case assembly
IPC: G04B39/00
Filed: 1971-04-19
Abstract: 1318173 Clocks and watches SUWA SEIKOSHA K K 19 April 1971 [10 March 1970] 22595/71 Heading G3T  A caseband 14 of a timepiece case assembly has a flange portion 13 defining a groove in which a bezel 12 is located and a surface which abuts a packing element 16 located between the caseband 14, a ring 15 and a glass 10. The surface lies in a plane more remote from the plane of the  glass 10 than the plane of that part of the caseband which lies nearest the plane of the glass. A further embodiment, Fig.6 (not shown) has the packing element (16) located in a space defined by the flange portion (13) and a groove (18) formed in the ring (15), and has the glass (10) fitting on to the ring.
Patent GB-1083605-A (GB)
Title: Facsimile transmission system
IPC: H04N1/00
Filed: 1966-05-20
Abstract: 1,083,605. Facsimile transmission on telephone lines. MAGNAVOX CO. May 20, 1966 [May 26, 1965], No. 22626/66. Heading H4K. Facsimile signals are produced as a frequency modulation of an audio-frequency carrier and put on to a telephone line by acoustically coupling an audio transmitter to an audio receiver connected to the line; the signals being received by acoustically coupling an audio receiver to an audio transmitter connected to the line. The audio receiver and transmitter connected to the line may be a receiver and transmitter of telephone handsets at the sending and receiving substations. Various mountings for coupling telephone handsets to facsimile send/receive equipment are described. The motors of the facsimile equipment may be synchronized by a signal generated by the motor at the transmitting station, or each motor may be locked to a timing fork. The receiver signal may be chopped and filtered to remove extraneous signals.
Patent GB-424062-A (GB)
Title: Improvements in or relating to rotary engines, pumps, and the like
IPC: F04C9/00
Filed: 1933-08-14
Abstract: 424,062. Semi-rotary engines. DAW, Z. W., 11, Queen Victoria Street, London. Aug. 14, 1933, No. 22631. [Class 110 (ii)] Means to convert the oscillating motion of a crank 1 fixed to the engine shaft 2, of a semi-rotary engine, to a rotary motion of the shaft 10, comprises a forked connecting rod 3 pivoted to pins 6 in a sliding cross-head 4, and a second connecting rod 7 pivoted to the rod 3 between the forks. The latter rod may be pivoted to the same cross-head pin as the rod 3 especially where two engines drive a common shaft arranged between them.
Patent GB-747002-A (GB)
Title: Improvements in or relating to sheet feeding mechanisms
Inventor: MESTRE LUIS
IPC: B65H9/06
Filed: 1954-08-04
Abstract: 747,002. Feeding sheets. GESTETNER, Ltd. Aug. 4, 1954 [Sept. 2, 1953], No. 22675/54. Class 100 (1).  Sheet-registration.-In sheet-feeding apparatus for printing-machines the leading edges of the sheets 50 are registered by a stop 60 removably secured on a rockable shaft 64 by a central screw &c. 71, and the inclination of the stop with respect to the direction of travel of the sheets can be adjusted by urging one end of the stop away from the shaft 64 by a spring 72, and arranging the opposite end of the stop to bear against the inclined surface 75 of a nut 74 engaging a screw-thread on the shaft. The stop 60 has depending fingers 59 which enter alternate slots 62 in a sheet support 57 when in position to register the sheets. The sheets are taken by grippers 65 on an impression cylinder 66 of a rotary offset machine, printed by the offset cylinder 112, and delivered' by a delivery cylinder 115 (not shown) to a delivery shoot. The shaft 64 is rocked from a cam 67 on the cylinder 66 through a rocker arm 70 which can be adjusted angularly of the shaft to vary the arc through which the stop 60 is rocked. This adjustment comprises a lug 82 on a collar secured to the shaft 64, a lug 79 secured to the arm 70 which is rotatably mounted on the shaft, and a screw 83 passing through the lug 82 and screw-threaded in the lug 79. The sheets are separated from a pile and fed by belt conveyers 52 over the support 57. Specification 747,005 is referred to.
Patent GB-276698-A (GB)
Title: Automatic warning-signal apparatus for railways
IPC: B61L29/28
Filed: 1927-08-30
Abstract: 276,698. G÷tz & S÷hne Kommandit- Ges., S. Aug. 30, 1926, [Convention date]. Electrical systems, automatic.-A signal at a level crossing is actuated automatically as the train approaches and passes the crossing, independently of the direction of traffic, by a combiration of contact members which normally occupy opposite positions, are caused to occupy similar positions as a train approaches, to move simultaneously to reversed positions as the train passes and to assume opposite positions as the train moves away from the crossing. Insulated rail sections, J1, J2, as shown in Fig. 1, or magneto generators actuated by the deflection of the rails may be used to control the apparatus and are placed at some distance on each side of the crossing and are each connected to the relay device by a single wire only. The relay shown in Figs. 1 and 2 is actuated mechanically as the train passes the crossing but may be actuated electrically, if desired. The apparatus is shown in normal condition, one contact-carrying rod K1 being down and the other K2 up. These rods may move horizontally. A train passing towards the crossing over contact J1 energizes magnet m3 by a circuit including armature r1 contact. 15, 9, battery B and the rails. Armature r2 is moved and allows the contact rod K2 to fall. Both rods K1, K2 being down, the circuit to signal S is completed over the contacts 1, 4, and the signal remains operative until, as the train passes the crossing, both rods are raised and retained by their detents. As the train passes the contact J2 beyond the crossing, a. circuit is made over contect 16, 8 to magnet m4 and allows rod K2 to fall. The apparatus is now reset ready for actuation by a train in either direction. Front contacts 13, 14 are provided in a holding circuit to the relay magnets to ensure that the rods K1, K2 are released as the train passes the rail contact. If magneto-generators are used for operating the relays, a dash-pot control on the relay armatures is fitted to maintain closed the energizing circuit between the successive impulses.
Patent GB-1499443-A (GB)
Title: Roofing panel
IPC: E04D1/36
Filed: 1975-05-23
Abstract: 1499443 Roofing panel ROOFTILERS (VIC) PTY Ltd 23 May 1975 [7 June 1974] 22887/75 Heading E1B A roofing panel has opposite respectively upwardly and downwardly directed interlocking edge flanges of such a form that when each is interlocked with the corresponding opposite flange of a similar adjacent panel an elongate cavity 11 is formed. The cavity has an outer lower edge which allows discharge of water and the formation of a meniscus to restrict air flow into the cavity and the forcing of water over the upper inner edge 8 under wet and windy conditions. The panels may be formed of coated sheet metal and may be formed on their other edges with similar meniscus forming interlocking corrugations.
Patent GB-1395682-A (GB)
Title: Saw blade holder for portable reciprocating saw
IPC: B23D51/10
Filed: 1973-05-15
Abstract: 1395682 Blade holder for reciprocating saw STANLEY WORKS 15 May 1973 [15 May 1972] 22952/73 Heading B5L A portable reciprocating saw comprises an elongate saw blade 122 with a cutting edge along a longitudinally extending edge thereof and an end tang 140, a saw blade support slide 70 mounted for rectilinear reciprocable motion, a saw blade holder 120 on the forward end of the slide 70 having an opening 146 for receiving the tang 140, and a motor drive for reciprocating the slide. The blade holder 120 comprises a supporting ring 130, located within an enlarged end portion of a bore 131 in the slide 70, and having a bore 136 set at an angle to the direction of reciprocation of the slide. A bifurcated blade clamp 134 is received in the bore 136 and a clamp screw 138 holds the end tang 140 within the slot 146 of the clamp. An arcuate slot 142 is provided in the slide 70 and is wide enough to receive the shank of the screw 138. Enlarged end portions 150, Fig. 3, of the slot 142 are large enough to receive the head 145 of the screw 138 so that the blade 122 can be secured in either of two alternative positions at 90 degrees to each other. The axis of the tang 140 is at an angle to that of the remainder of the blade 122 so that reversal of the blade through 180 degrees causes its cutting edge to lie at a different angle to the line of reciprocation of the slide 70, as shown in solid and dashed lines in Fig. 4.
Patent GB-387018-A (GB)
Title: Improvements relating to electric synchronising apparatus
IPC: H02J3/42
Filed: 1931-08-14
Abstract: 387,018. Synchronizing. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and WHITELEY, A. L., 11, Stanley Road, Hillmorton Paddox, Rugby. Aug. 14, 1931, No. 22970. [Class 38 (iv).] Alternating currents or periodic current impulses to be synchronized are applied respectively to the grid and anode circuits of a discharge tube to that when the alternations or impulses are in synchronism the potentials applied to the grid and anode are opposed in phase and no current flows in the anode circuit, this cessation of current operating a control device. Alternating currents in circuits 1, 2 to be synchronized are applied through transformers 3, 4 to the anode and grid circuits of a thermionic valve or a vapour arc discharge device 5, a resistance 6 being provided to limit the current flowing in the grid circuit. A relay may be connected in the anode circuit being deenergized when the anode and grid potentials are in synchronism, or, as shown, a resistance 7 is included in the anode circuit of the discharge device 5 and caused to apply a negative potential to the grid of a second discharge device 8, which may also be of the vapour arc discharge type. On the cessation of anode current in the device 5, the negative bias on the grid of the device 8 is removed, permitting current flow which may operate a relay 13. If a slight phase displacement is permissible when the indicator 13 is to be energized, a steady negative bias may be applied to the grid of the valve 5, or a phase-shifting device may be inserted in either the grid or anode circuit.
Patent GB-296370-A (GB)
IPC: A61M3/02
Filed: 1928-08-10
Abstract: 296,370. Friedlander Gummiwarenfabrik Ges., J., (Assignees of Sandig, E.). Aug. 30, 1927, [Convention date]. Hydrostatic douches; stands and the like. - A portable hydrostatic douching appliance comprises a flexible container d enclosed in a pocket b of a waterproof cover a of rubberized fabric or like flexible material. A second pocket c is provided for the douche tube f. The appliance is suspended when in use by means of an eyelet e in the cover and, when not in use, is rolled up and secured by press studs and sockets g.
Patent GB-576772-A (GB)
Title: Improvements in or relating to flexible pipe joints or couplings
IPC: F16L37/06
Filed: 1944-11-22
Abstract: 576,772. Pipe joints. JAMIE, R. C. S., and HUNT & TURNER, Ltd. Nov. 22, 1944, No. 23196. [Class 99 (i)] Pipes 7, 8 are connected by a sleeve 10 of flexible material having an annular chamber 9 adapted to be supplied with fluid under pressure through a valve 14. The. chamber is formed by two strips of flexible material secured at their edges such as by vulcanization, is secured to the pipe by band-clips 12, and may be reinforced by an external metal band 13. In securing a flexible tube to rigid tube the chamber may be formed on the end of theflexible tube into the end of which the rigid tube is introduced.
Patent GB-511650-A (GB)
Title: Improvements relating to arrangements for sucking off the boundary layer from aerofoils
IPC: B64C21/06
Filed: 1938-08-05
Abstract: 511,650. Reducing surface-friction of aircraft. MESSERSCHMIDTT, W. Aug. 5, 1938, No. 23230. Convention date, Aug: ' 11, 1937. [Class 4] , In aircraft wings provided with slots connected with suction devices for sucking off the boundary layer the walls of the suction conduits are formed by structural elements, such as solid or hollow spars or hollow stringers, preferably in conjunction with parts of the stressed skin. In one form, openings d in the wing skin communicate with a trough-like flange c of a box-spar, and in some cases by forming holes i in the flange with the interior of the spar itself, a suction pump being in the latter case connected to the spar. In another form slots in the skin register with U-section stringers. In a third form, the conduit is formed by portions of the wing covering, the web of the spar and a diagonal web which closes the angle between the spar web and the wing covering.
Patent GB-621394-A (GB)
Title: Hitch mechanism
IPC: B60D1/155
Filed: 1946-08-08
Abstract: 621,394. Tractor-trailer couplings. FERGUSON, Inc., H. Aug. 8, 1946, No. 23501. Convention date, Sept. 20, 1945. [Class 103 (v)] A tractor is coupled to an unbalanced trailer by a triangular coupling comprising an arm 23, Fig. 2, rigid with the trailer, a compression link 20 between the arm and tractor and a lower draught-link 19, the arrangement being such that when the tractor is backed against the stationary trailer the link 20 moves towards the arm 23, as shown in full line, to raise the trailer off a stand to transfer the unbalanced weight of the trailer onto the tractor back axle, and the slide end 27 of the draught link 19 moves into the trailer to straighten a toggle 53, 54, which passes over its dead-centre to retain the draught-link in its shortened position. One link 53 is fixed on a pivot pin having a head 28 which can be rotated by a one-way wrench to break the toggle when the trailer is to be lowered on to its stand, and the compression link 20 may be disconnectible under tension. The toggle link 53, Fig. 8, is pivoted between side-plates 47 and the pin 50 of the toggle link 54 slides in slots in the side-plates and also passes through the end of a slide 41 to which the end of the draught-link 19 is pivoted. In the uncoupled position, the link 19 is in the extended position and the toggle takes up the position shown in dotted line, and when the link 19 moves into the coupled position the toggle links are straightened as shown in full line and the pivot pin 55 passes over the dead-centre and the links abut a stop 56. The toggle links are assisted into this position by a latch 63 pivoted by an elongated hole 64 on a pin 65 between side-cheeks 66, a spring 69 urging a roller 62 over a nose 61 extending from the link 54. The compressionlink 20, Fig. 9, is universally jointed to the back axle by pins 79, 74 and the tube 71 of the link is connected to a conical stub 73 of the joint by a spring-ring 81 engageable in a recess in the tube but disconnectible therefrom under tension. The other end of the tube 71 is provided with a pair of pins 91 on which slide upper and lower plates 90 of a fork 82 which is pivoted to the arm 23, the holes 93 in the plates being widened at the base so that by moving the fork away from the tube, as when coupling the fork to the arm 23, lateral movement may be obtained, but when the link 20 is under compression the plates 90 slide into the narrow end of the holes and lateral movement is prevented. The draught-link 19 comprises inclined rods 33 pivoted to a yoke 34, the pivot 36 of the yoke being connected to spaced plates fixed to the underside of the back axle, the inclination of the draught-link 19 and compression-link 20 being such that the continuation of their axes meets in a point below and forward of the back axle of the tractor. The fork 82 may be rigid with the tube 71 of the compression link and the joint between the compression link and arm 23 may have frictional stiffness in order to assist the coupling of the vehicles. Specification 470,069, [Group I], is referred to.
Patent GB-331719-A (GB)
Title: Improvements in telescopic guards for rotating elements such as rotary shafts
IPC: B23Q11/08
Filed: 1929-07-31
Abstract: 331,719. Cincinnati Bickford Tool Co., and Klausmeyer, D. C. July 31, 1929. Guards. - An adjustable guard for rotating members, such as shafts, comprises a strip of spring steel or other resilient material 20 in volute form with the turns overlapping, as shown at 21, the larger end being surrounded by a tubular member 22, which houses some or all of the convolutions when the guard is collapsed. The guard is particularly, but not exclusively, applicable to machines in which frame members, between which the shaft &c. runs, mutually approach and recede. As applied to a radial drill, Fig. 2, the guard 20 surrounds the vertical driving-shaft 12, to which is slidably keyed a bevel wheel 17 driving the horizontal shaft 7 on the radial arm 4, the arm 4 being raised and lowered by a feed screw (not shown). The volute strip 20, which is initially in flat spiral form, is extended as the arm 4 rises and is secured by hooked ends 20b, 20a and screws to sleeves 23, 22 respectively on the arm 4 and on a bearing 13, which is integral with the usual sleeve 3 rotatable on the fixed vertical pillar (not shown). Alternatively, the guard may be initially volute and merely bear at its ends on the parts 4, 13. The sleeve 22 may contain oil or oil-soaked packing, the oil being picked up by the guard when collapsed, distributed over the contacting surfaces during expansion, and returned by gravity down the edges of the convolutions. In a modification, where the parts 4, 13 do not approach so closely, the sleeves 22, 23 are extended, as shown at 22b, 23<b>, Fig. 7, and the guard 20 is shortened so that it is reversely extended, as shown in broken lines, when the radial arm is at its lowest point.
Patent GB-1301034-A (GB)
Title: Means for limiting fundamental-frequency over-voltages in ac networks
Inventor: THOREN BERTIL
IPC: H02H9/04
Filed: 1970-05-15
Abstract: 1301034 Over voltage protection ALLMANNA SVENSKA ELEKTRISKA AB 15 May 1970 [16 May 1969] 23569/70 Heading H2H A device for limiting fundamental frequency over voltages in a high voltage A.C. network, comprises a reactor 3, in series with a fast switch 2, shunted across the supply. The switch is normally open. When an over voltage occurs, surge diverter 4 breaks down, and induces a voltage pulse in transformer 7, which causes fast switch 8 to close. A second surge diverter 9 may be shunted across the reactor 3 to prevent over voltages when the reactor 3 is brought into or out of circuit.