baber/WOPTO huggingface dataset:
Patent GB-1198040-A (GB)
Title: Improvements in and relating to Film Feeding Equipment
Inventor: STEJSKAL BRETISLAV
IPC: G03B17/30
Filed: 1969-01-13
Abstract: 1,198,040. Control of D.C. motors. TESLA NARODNI PODNIK. 13 Jan., 1969 [12 Jan., 1968 (2)], No. 1917/69. Heading H2J. [Also in Division G2] In feeding equipment for advancing a film strip by a required number of frames in either direction, the strip is moved past a light source and an objective between two reels, the film being coupled to two reversible motors through respective friction drives. Photo-electric sensors for stopping forward or backward movement of the film are located near the film gate, another pair of similar sensors being positioned near the display screen. These sensors detect the passage of synchronizing marks on the film strip. A forward-signal is applied from a bistable circuit to lead 26, whereby transistor T1 is turned-on, transistor T3 is turnedoff and transistors T4, T9, are rendered conductive. Motor 4 receives full positive supply voltage, whilst motor 5 is energized at a lower voltage through resistors R31. Backward movement is started when a signal from a bistablecircuit is applied to lead 27, so turning-on the transistor T2. Transistor T5 is turned-off whilst transistors T8, T10, are made conductive so that the motors 5, 4, are energized in reverse, the motor 4 having a reduced voltage-supply. When, during forward movement, for example, a stopping signal, is applied to the bistable circuit, the motors are switched-off and a monostable circuit becomes effective to apply a pulse to lead 28. Transistors T2, T10, are turned-on whereby the motors are connected for reverse-current braking, the motor 4 being supplied through the resistor R31. The motors are then disconnected from the power supply and transistors T5 and T12 become effective to complete a braking circuit across the motors. During the reverse movement, the braking is effected in a similar manner.
Patent GB-173975-A (GB)
Title: Adjustable wrench
IPC: B25B13/22
Filed: 1921-01-13
Abstract: 173,975. Ragon, L. H. Jan. 13, 1921. Sliding-jaw wrenches; handles.-In a wrench having a sliding jaw as c which is held in adjusted position by a spring-pressed pawl as d engaging a rack on the fixed jaw, the spring f which controls the pawl is arranged substantially parallel to the handle and is fixed to an extension of the jaw, and a side projection h is fixed to the pawl to enable it to be disengaged from the rack. An oval tubular hand-grip i is preferably provided, and is secured by rivets j.
Patent GB-753986-A (GB)
Title: Foldable sofa bed and lock therefor
IPC: A47C17/23
Filed: 1954-01-22
Abstract: 753,986. Bed-settees. COOPERSMITH, R. Jan. 22, 1954 [May 13, 1953], No. 2040/54 Class 52(2). A foldable sofa-bed with bed frame sections 17 . . . 20 foldable into the sofa frame S so that section 20 is parallel to but spaced from section 18 has a pivoted locking element 36 on section 20 which engages a bracket 74 on section 18 to hold the frames in said spaced relation, the element 36 being automatically unlocked, as the frame is unfolded, by a lever 61 and unlocking link 67 with a slot engaging a pin 71 on a bracket 70. As the bed is unfolded link 67 slides and pivots about pin 71 and its end 73 strikes an actuator 42 so that the latch element 36 is pivoted against the action of spring 44 to free its notch 40 from the bracket 74. When folding the bevelled nose 41 of element 36 strikes seat 75 of bracket 74 and the notch 40 snaps over the edge of seat 75. In a modification the unlocking link carries a pin sliding in a slot on the bracket. Specification 675,254 is referred to.
Patent GB-926956-A (GB)
Title: Improvements in or relating to releasable fastening devices
Inventor: CHANARYN VICTOR
IPC: E05B65/32
Filed: 1959-01-20
Abstract: 926,956. Latches. WILMOT-BREEDEN Ltd. Jan. 14, 1960 [Jan. 20, 1959], No. 2047/59. Class 44. A releasable fastening device comprises a rotatably mounted cam and a keeper which undergo relative translatory movement during a fastening operation and initially engage to turn the cam in the uncoupling direction prior to coupling engagement in which the keeper engages the cam at or close to the rotational axis of the cam the keeper having a coupling portion, which presents in section in a plane at right angles to the rotational axis of the cam, a closed figure of simple geometrical form, and the coupling portion being formed with a rearwardly directed surface undercut to ensure substantially line contact with the cam when in coupling engagement therewith and with a rounded leading surface with which the cam initially engages. As shown, the cam 1 is rotatably mounted about an axis 3 on a backplate 19 and is adapted to engage a surface 8 of a keeper portion 2 upon relative translatory movement of the cam and keeper portion from the Fig. 1 position to the fastened position of Fig. 3. A member 16 formed on or attached to the backplate 19 and including a spring- loaded wedge 23 co-operates with a keeper portion 14 and the portion 2 to guide the cam and keeper portion 2 and to provide restraint against movement of the parts in the vertical sense. The cam 1 is mounted on a spindle 25 which also carries a cam-plate 27 and a spring 28 loading the cam in its keeper-engaging direction from which it is released by an outside push-button 33 or by an inner remote control linkage (not shown) through a lever 37, an arm 39 of which engages an arm 42 of the cam plate 27. The push-button 33 incorporates a key-operated locking member 47 for blocking the push-button stem 35. Where key operation is not required, an inner locking knob is operatively engaged with a similar locking member rotatably mounted in the outer door handle. In both cases, the outer door handle is mounted in an aperture in the door panel by means of a spring clip 55 and sealing washer 56. In other arrangements, Figs. 9 and 10 (not shown), the portion 14 is disposed above the portion 2 and in the Fig. 9 arrangement forms also a mounting for the wedge 23. The member 16 forms a partial shroud for the cam. Specifications 864,305 and 871,895 are referred to.
Patent GB-137915-A (GB)
Title: New or improved saw sharpening machine
IPC: B23D63/00
Filed: 1919-01-28
Abstract: 137,915. Collins, W. A., and Porter, L. B. Jan. 28, 1919. Saws, sharpening.-In a machine for sharpening saws, of the kind in which a grinding-disk is automatically moved to follow the protile of the saw teeth and mechanism is provided for moving the saw forward one or more teeth at each operation, the operations being so timed that the front or cutting-edge of a tooth is ground whilst the saw is stationary and the back of a tooth whilst the saw is being fed forward, means are provided for adjusting the angle or bevel of the front of the teeth and for adjustment of the movement of the saw and of the grinding-disk to adapt the machine to saws having teeth of different pitch. The saw 4 is secured by a spring-pressed conical clamp 51 to a block 3 adjustable on guides 2, and is sharpened by means of a grinding-disk 14 mounted in bearings in a bracket 11. This bracket is mounted to swivel about a pin 11<a> carried by a swivel pin 10, which is rotatably mounted in a bracket 9 provided with a slide 8 longitudinally movable on guides 7; adjustment of the grinding-disk about the pin 10 gives the required bevel cut or side clearance to the teeth. The guides 7 are carried by a bracket 5 angularly adjustable on a pivot 6 carried by the frame 1; such adjustment enables the cutting-angle of the front of the teeth to be varied. The grinding- disk is driven from a countershaft 15, which also drives, through worm gearing 20, 21 and a belt 25, a low-speed shaft 26<a> from which the reciprocating movement of the slide 8 and the feeding movement of the saw are derived. The slide 8 is reciprocated on the guides 7 by a profile cam 35, which engages a roller 36 adjustably mounted on the slide, and is carried by a slide-carriage 33 reciprocated in guides on the frame 1 by a rod 32 connected to a lever 31 mounted on a rocking shaft 30. This shaft is operated from the shaft 26<a> through an adjustable-throw crank 27 connected by a rod 28 to an oscillatory lever 29 carried by the shaft 30. The saw is fed forward by an adjustable-throw crank 41<a> on the rocking shaft connected, through an arm 40, with an adjustable pawl comprising a rod 39 adjustable longitudinally in the arm 40 by means of a screw and carrying the pawl tooth 38. The adjustablethrow cranks 27, 41<a> are constructed as shown in Fig. 6, and comprise a crank-pin 42 adjustable longitudinally of the crank-web by means of a screw 43. To prevent chattering, the saw is held rcsiliently against the face of a table 46 by a clamp 48. To produce opposite bevel cut on successive teeth. the saw is fed forward two teeth at a time, whereby every other tooth is given a similar cut; the grinding-disk is then re-set to give the opposite bevel. As described above, the machine is adapted to sharpen circular saws; it may also be adapted to sharpen hand-saws, bandsaws, &c. According to the Provisional Specification, the cam 35 may consist of a curved arm pivoted to the carriage at one end and having an adjusting-screw at the other end, and a fan may be provided for removing the metal particles.
Patent GB-1359895-A (GB)
Title: Vehicle
IPC: A63G19/10
Filed: 1972-01-17
Abstract: 1359895 Toy vehicle M I GLASS [trading as MARVIN GLASS & ASSOCIATES] 17 Jan 1972 [8 Feb 1971] 2155/72 Heading A6M [Also in Division B7] An operator-propelled toy vehicle comprises a frame including a generally flat spring member 22 curved to provide a deformable medial portion 22a and downwardly extending forward and rearward end portions 22b, 22c; seat means 34; and axle means 50 (52) journaled in at least one of said end portions and supporting laterally spaced wheels 76, the axle means incorporating a thrust receiving and transferring means for permitting rotational movement of the axle, responsive to deformation of the medial portion, to propel the vehicle. As shown the thrust means comprise ratchet wheel and pawl means arranged so that downward movement of the medial portion locks the rear wheels against rotation but permits the front wheels to rotate and move forward and subsequent upwards movement of the medial portion locks the front wheels but permits the rear wheels to rotate and move forwards so that repeated up and down movements of the medial portion by an operator on the seat 34 causes the vehicle to be propelled along.
Patent GB-454348-A (GB)
Title: Improved device comprising an electric mercury-vapour discharge tube and a red-fluorescent layer
IPC: H01J61/33
Filed: 1936-01-24
Abstract: A high-pressure mercury vapour lamp of the kind described in Specification 431,451, [Group XL], is used with a fluorescent layer on the cap of the lantern the layer consisting of Rhodamine B.  This is dissolved in a condensation product obtained by heating 3 mol. symmetric dimethylglycol and 2 mol. of citric acid for 3 hours at 150 DEG  C. and then 3 hours at 180 DEG  C.  After cooling down 4 kgs. of this product is dissolved in 4 kgs. acetone in which mixture 10 grs. of the rhodamine is dispersed, this mixture being then applied to the cap.
Patent GB-1130003-A (GB)
Title: Temperature control of crystal resonators
IPC: H03H9/08
Filed: 1966-01-18
Abstract: 1,130,003. Constant-temperature containers. PLESSEY CO. Ltd. (Telephone & Electrical Industries Pty. Ltd.). 18 Jan., 1966, No. 2311/66. Heading H1E. In order to minimize temperature changes, a temperature-sensitive device, i.e. a piezo-electric crystal, crystal diode or thermistor, is embedded in a mass of a material having high thermal capacity and low thermal conductivity. The example described consists of a piezo-electric crystal embedded in paraffin wax or in a microcrystalline wax. The wax is contained in a vacuum flask and extends through the neck of the flask to provide an external support. The leads to the device are kept as thin and as short as possible and may be capacitatively coupled to the external supply lines. A heating or cooling device may be interposed between the device and the mass of wax.
Patent GB-782636-A (GB)
Title: Tube drawing apparatus
Inventor: GIESLER JEAN VERDI
IPC: B21C1/30
Filed: 1956-01-24
Abstract: 782,636. Drawing tubes. ROBERTSHAW-FULTON CONTROLS CO. Jan. 24, 1956 [May 19, 1955], No. 2312/56. Class 83 (4). In apparatus for drawing a tube 200, Fig. 5, through a stationary die 84 a mandrel 68 is reciprocated within the die while the tube is drawn through the die by mechanism such as a draw carriage 126, Fig. 1, which exerts a continuous pull. The mandrel 68 is pivoted on a carriage 16 which is reciprocated over a slideway 14 by means of a double-acting hydraulic piston 36 under the control of solenoid switches 25, 27 actuated from a roller 24 moving with the carriage 16. The mandrel may include means for lubricating the interior surface of the tube. The end of the tube 200 has lips 202 which engage over a head 192 initially fitting in a conical recess 190 in the end of the mandrel 68 and having a head portion 154 which is engaged by gripping jaws 132 on the drawing carriage 126. Movement of the carriage 126 on wheels 130 over guide tube 133 is provided by a pair of hydraulic cylinders 94 mounted between fixed members 82, 92 of the machine frame 10 and actuating piston 100 (not shown) attached to a draw plate 104 on the carriage 126. The gripping jaws 132 are mounted on the draw plate 104 and comprise radially slidable jaw pieces 150, Fig. 6, actuated by pivoted levers 146 engaging in the jaws and held in the clamping position by an axially slidable chuck head 144. For opening the jaws the chuck head 144 is retracted by a piston rod 166 of an hydraulic cylinder 168 and attached by a pin 160 movable in a slot 162. Hydraulic lines 180 to the cylinder 168 from a solenoid valve 188 are coupled through a hose reel 182. The length of tube drawn is limited by an adjustable stop 214 on a push rod 208 which is engaged by a stop 212 on the carriage 126 to move the push rod 208 against the action of a spring 210 and actuates a switch 204. The mandrel 68 is mounted on a bell crank 64 which can be tilted to raise the mandrel for insertion or removal of tubes. A wheel 66 on the end of the bell crank arm 64 runs over a table 70 which is elevated as required by an hydraulic cylinder 74. The apparatus may be sequentially operated automatically under the control of a series of solenoid-operated hydraulic valves or the separate operations may be manually controlled. Reference has been directed by the Comptroller to Specification 244,447, [Class 20 (ii)].
Patent GB-756755-A (GB)
Title: Improvements in vibratory converters
IPC: H02M1/26
Filed: 1954-01-26
Abstract: 756,755. Converting. MALLORY & CO., Inc., P. R. Jan. 26, 1954 [Jan. 29, 1953], No. 2313/54 Class 38 (2) An inverting circuit energized from a battery 14 comprises a vibratory interrupter 13 connected to a transformer 20 having a core 27 with two limbs which carry respectively primary and secondary windings 21, 23 and primary and secondary windings 22, 24. The coupling between the windings of each pair is tight compared with the loose coupling between the primary windings 21, 22. Two buffer capacitors 25, 26 are connected in series across the secondary winding output terminals 32, 34 and a resistor 29 is connected between the common terminals of the capacitors and transformer secondary windings. The output to the load 44 may be rectified by dry metal, or gas discharge rectifiers 30, 31 or by further contacts on the vibrator, Fig. 3 (not shown). The transformer core may be either of the core or of the shell types, Figs. 4, 5 (not shown). By this arrangement the contact-make current surge is suppressed without substantial increase of the contact-break voltage surge.
Patent GB-566759-A (GB)
Title: Connection block assemblies for electrical wiring purposes
IPC: H01R9/26
Filed: 1943-02-12
Abstract: 566,759. Distribution boards. PHILIPS ELECTRICAL INDUSTRIES OF AUSTRALIA PTY., Ltd. Feb. 12, 1943, No. 2384. Convention date, Feb. 6, 1942. [Class 38 (i)] A connection block assembly comprises a channel-shaped metal mounting strip 8 into which slide insulating blocks 6 having a terminal or terminals 9 moulded into them, end blocks 18 serving to hold the blocks 6 in place. The inturned edges 7 of the strip 8 fit over beads on the blocks 6, 18, the latter being secured by bolts passing through holes 22 which may also serve for mounting the assembly. The blocks 6 may have holes 14 drilled through both the insulation and the insert 9, a pair of screws 13 clamping leads inserted from each end.of the holes. Alternatively, two separate inserts 26, Fig. 4, are used and connected by a strip 29, the leads, or lugs attached thereto, being clamped under the heads of the screws 13. Separating flanges 11 are formed on the blocks 6.
Patent GB-320828-A (GB)
IPC: F16L13/04
Filed: 1929-01-23
Abstract: 320,828. Mannesmannr÷hren-Werke. Dec. 6, 1928, [Convention date]. Joints formed by welding.-The abutting flanges of two tubes are brought wholly or partly into a position parallel to the axis of the tubes so as to engage in a spigot and socket manner, after which they are jointed by welding at the ends and then, at the same temperature, the edges of the flanges are turned inwardly so as to relieve the weld of strains.
Patent GB-682745-A (GB)
Title: Improvements in or relating to plant driven by compressed air for cooling the air in underground workings
IPC: E21F3/00
Filed: 1951-01-31
Abstract: 682,745. Refrigerating. RUHRSTAHL AKT.- GES. Jan. 31, 1951 [Sept. 10, 1949], No. 2439/51. Class 29 Apparatus for cooling the air in mines comprises a waggon in the mine on which is mounted a compressed air motor 2 driving a compressor 1 from which compressed dichlorodifluoromethane passes to a water cooled condenser 4, a supercooler 6 cooled by the expanded air from 'the motor 2, an expansion valve 7 and an evaporator. 3 over which the mine air is blown by a fan 11. Moisture precipitated on the evaporator 3 is sucked through a pipe 13 by the motor exhaust and is atomised into the exhaust air stream. To melt ice crystals in the exhaust air stream, the latter may be mixed with warm air entering through a pipe controlled by a shutter 15 operated by a thermostat in the exhaust air stream. Exhaust from other compressed air motors may also pass through the supercooler 6.
Patent GB-114420-A (GB)
Title: Improvements in or relating to Glazed Roofings.
IPC: E04D3/06
Filed: 1918-02-11
Abstract: 114,420. Soc. des Vitrages A. M. L. March 26,1917, [Convention date]. Glazing.-Panes of glass are formed with one or more lateral flanges at opposite edges. The flanges project in the same direction as shown in Fig. 1. The glass is fixed by stops 19, 20, 21. According to the Specification as open to inspection under Sect. 91 (3) (a) the flanges might project in opposite directions, as shown in Fig. 3 (cancelled). This subject-matter does not appear in the Specification as accepted.
Patent GB-340816-A (GB)
Title: Process for working-up the waste sulphuric acid produced in the washing of mineral and tar oils with sulphuric acid
IPC: C01B17/92
Filed: 1930-01-23
Abstract: Sulphuric acid used for washing mineral and tar oils trickles in undiluted state down a tower in counter-current to vapours of acid tar oils of medium boiling point such as phenols or higher benzene homologues, the proportion of tar oils to acid being small, e.g. 1 to 8 by volume.  The condensed vapours, containing the resinous impuririties of the acid in solution, separate above the acid.  Water is added to the purified acid to lower its specific gravity from 1,8 to 1,5--1,55, whereupon traces of resins, acid tar condensates and lighter hydrocarbons separate above the pure sulphuric acid, as a tar-oil-bitumen mixture which is worked up for asphalt, tar oils, benzols &c.
Patent GB-577335-A (GB)
Title: Improvements in and relating to bearings and bearing surfaces
IPC: F16C33/12
Filed: 1944-02-10
Abstract: 577,335. Electrolysis. VANDERVELL PRODUCTS, Ltd. (Cleveland Graphite Bronze Co.). Feb. 10, 1944, No. 2498. [Class 41] [Also in Group XXXIV] A lead-antimony alloy wearing surface on a bearing is formed by the simultaneous electro deposition of .lead and antimony on an intermediate layer of copper, silver or bronze, or alloys thereof, which has been bonded to a steel backing. The wearing surface alloy may also include tin. For a wearing surface containing 4¢-6¢ per cent. tin, 1¢-2¢ per cent. antimony, and the balance lead, there is used a bath containing lead 110, tin 6, antimony 1, resorcinol 5, gelatin 1, and fluoboric acid 60, grams per litre. Anodes of lead-tin alloy (5 per cent. tin) and a current density of 20 amperes per square foot at room temperature are used. A thin preliminary bonding layer of tin may be electro deposited.
Patent GB-1382115-A (GB)
Title: Method and apparatus for freezing products by directcontact with an evaporating freezing agent
IPC: A23L3/36
Filed: 1972-01-19
Abstract: 1382115 Refrigeration GRASSO'S KONINKLIJKE MACHINEFABRIEKEN NV 19 Jan 1972 [2 Feb 1971] 2554/72 Heading F4H In apparatus for freezing a product by direct contact with an evaporating freezant, e.g. R12, the product is inserted into a sealed freezing chamber 1 through an air lock not shown, or the like and the atmosphere therein is scavenged with a volume of gaseous freezant from a store formed in the top of a condenser 6 through a conduit 16, 17 and valve 4 by a pump 9, and passes via a valve 2 and conduit 19, 20 to a separator 7 formed as a jacketed cooling column wherein the freezant is separated from the effluent gas mixture by condensation. After scavenging, the valve 2 is closed and liquid freezant passes from the condenser 6 into the chamber 1 for direct contact with the product, the evolved gas passing back through a valved conduit 18 to the top of the condenser 6 until the freezing process is completed. Thereafter, valves 3 and 4 are closed and a second scavenging occurs by opening of a valve 5 in a conduit 22, 23 and operation of a pump 11 to establish communication between the freezing chamber 1 and a store 8 of cold gaseous constituents of the effluent gas mixture separated in the separator 7. After this second scavenging the valves 2 and 5 are closed and the vessel may be opened for removal and recharging of the product. The separator 7 is cooled by a closed refrigeration circuit having a compressor 13, and a condenser 14 having a coil 25 through which freezant from the condenser 6 is passed by the pump 9.
Patent GB-451910-A (GB)
Title: Hose supporting clasps
IPC: A41F11/04
Filed: 1936-01-27
Abstract: 451,910. Hose suspender grips. SIGNORINI, A., 390, Reconquista Street, Buenos Aires. Jan. 27, 1936, No. 2580. Convention date, Jan. 28, 1935. [Class 44] A grip for hose suspenders comprises a loop member 2 for attachment to the suspender tape, not shown, and having secured thereto a rigid button-carrying member 1 co-operating with a rigid loop member 19 pivoted at 17 to a cranked member 11 which is itself pivotally mounted at 16 between cheeks 14 on member 2. Member 1 as shown is rigidly connected to member 2 but a modification is described in which the connection is pivotal. The lower end of member 1 carries a resilient button 8 of rubber or corrugated metal secured under a downwardly directed overhanging hook-like portion 6 stamped up from or secured to member 1. The lower face of button 8 co-operates with an internal straight edge 26 at the lower end of the aperture 20 in member 19. In use, the hose &c. is placed over the parts 6, 8, loop 19 is swung down to embrace button and hose, and is then moved upwardly, member 11 swinging upwards and finally being snapped over a dead centre so that grip between parts 8, 26 is effected by a toggle action. A lip 28 is provided to facilitate manipulation. Members 1, 19 may have strengthening ribs such as 23 and a strip of fabric, not shown, may be secured to the lower bar of the loop 3 in member 2 so as to lie between the grip and the person of the wearer. Modified forms of crank connection between members 2, 19 are described.