baber/WOPTO huggingface dataset:
Patent GB-625774-A (GB)
Title: Improvements in or relating to the manufacture of wire wound articles
IPC: H01C17/04
Filed: 1947-03-27
Abstract: 625,774. Covering by winding. BATES, F. W., CLARK, C. E., and HUGHES & SON, Ltd., H. March 27, 1947, No. 8318. [Class 83 (iv)] In a machine for coiling wire on formers for use as potentiometers the former 7 is held in chucks 6 rotated from a pulley 10 and the wire is guided during coiling by a screw on a cylinder 21. The former 7 is flat and carries a cam 14 which oscillates a frame 18 carrying the cylinder 21 about a shaft 15. By varying a gear train 31 between the former and cylinder 21 the pitch of winding may be altered.
Patent GB-708265-A (GB)
Title: Improvements in or relating to combined fluid-pressure reducing and safety valves
IPC: G05D16/10
Filed: 1951-04-10
Abstract: 708,265. Fluid-actuated valves. INDIA RUBBER, GUTTA PERCHA & TELEGRAPH WORKS CO., Ltd., and WEBB, D. April 9, 1952 [April 10, 1951], No. 8337/51. Class 135 A combined pressure reducing and safety valve comprises a reducing closure member 6 controlling flow from an inlet 9 to an outlet 34 and urged off its seat 5 by a spring 16, outlet pressure acting on a piston 14 to seat the member when a predetermined pressure is attained. Outlet pressure has access to the interior of a bellows 20 surrounding the piston and acts on the bellows end-plate 24 which seats on an annular member 26 carried by the piston. The member 26 slides within a stop sleeve 30 screwed in the valve body and locked in adjusted position by a screw 32 engaging one of a number of slots 33. The sleeve is accessible through an opening 31 for adjustment. If outlet pressure rises after seating of member 6, piston 14 will move until plate 24 abuts the sleeve 30 and further movement of the piston separates the members 26, 24 which constitute the safety valve. Outlet pressure then acts on the member 26 which moves to open the slots 33 whereby excess outlet pressure is relieved. The bellows may be replaced by a diaphragm. Specification 529,442 and U.S.A. Specification 2,053,931 are referred to.
Patent GB-1361349-A (GB)
Title: Television signal strength measuring apparatus
IPC: H04N17/00
Filed: 1972-02-23
Abstract: 1361349 Television signal strength measurement PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 23 Feb 1972 [26 Feb 1971] 8341/72 Heading G4H [Also in Division G1] The strength of a television signal is measured by counting the line synchronizing pulses for a period proportional to the strength of the signal and then resetting the counter by a field synchronizing pulse. The incoming TV signal is fed through switched attenuator 2, 3 and band pass filter 4 to mixer 5. The resulting IF signal is split at 6 and one part is fed to IF amplifier 7 and video and display unit 8 so that the quality of the television picture can be seen. The IF signal is also passed to continuously variable attenuator 9, amplifier 10 and peak rectifier 11 and the resulting D.C. signal is applied directly to trigger stage 12 and via a potentiometer 14 to second trigger stage 13. The outputs of the trigger circuits are fed to bridge 15, the outputs of which are connected to motor 16. Variable attenuator 9 and potentiometer 17 are mechanically coupled to the shaft of motor 16. Potentiometer 17 controls the supply of current to integrator 18 and the output of the integrator is connected to trigger 19 which shuts gate 24. Line flyback pulses Z, extracted from video and display circuits 8 are fed via gate 24 to counter 21 (resettable by unit 20) and field flyback pulses V from the same source are fed through diode by two circuit 23 to zero integrator 18 and reset counter 21. In operation, the output voltage of peak rectifier 11 is applied to triggers 12, 13 and the output of these drives motor 11 and hence variable attenuator 9 until the voltage on the triggers reaches the desired value. At the same time potentiometer 17 is altered, altering the current supply to the integrator. After resetting, the integrator is started and simultaneously gate 24 is opened and remains open until the desired level of the integrated voltage, sensed by trigger 19 is reached. The time of integration and hence the count recorder are proportional to the input signal strength. The range of the apparatus may be increased by using input attenuator 2, and the counter may be provided with an indication when the input is either too high or too low for the instrument.
Patent GB-494414-A (GB)
Title: Improvements in or relating to sheet folding machines
IPC: B65H45/20
Filed: 1937-03-22
Abstract: 494,414. Pleating. POLLAK, J. E. (Palmer, E. E.) March 22, 1937, Nos. 8403 and 22317. [Class 141] [Also in Group XVI] A folding machine for forming zigzag folds in sheets of paper or like material in the production, for example, of maps, time-tables or pamphlets, comprises platelike members adapted to fold the sheet by making similar movements in opposite directions, and having associated therewith mechanism whereby the depth of the folds produced may be varied. The sheets to be folded are arranged on an endless belt 6 in the form of a fanned-out pile with the front edges of the sheets folded back on themselves. They are fed forward at the required intervals into engagement with the lower fold plate 4 which is then in the raised position, by fingers 8 which engage the fold in each sheet and are carried by a frame reciprocated horizontally by a lever 9 oscillated by cams 30, 31 under the control of a spring 28 so as to have quick forward and return. movements followed by a period of rest. A ratchet mechanism 33, 34 operated by a link 32 from the lever 9 gives an intermittent movement to the belt 6. Additional fingers 10 are pivoted on the carriage, and extensions 11a thereon engage stops 13 so as to hold the folded front end of the sheet against the blade 4. The blade 3 is now moved downwardly to engage the sheet and the fingers 8, 10 are withdrawn. Subsequently the blade 4 is moved downwardly and then upwardly to fold the sheet over the blade 3. When this operation is completed, the blade 3 is moved in a similar manner to fold the sheet over the edge of the blade 4. Alternate movements of the blades 3, 4 continue in step with the feed mechanism to zigzag fold the sheets. The blade 3 is pivoted to a carriage 23 reciprocated vertically on guides 24 by a rotary cam 26 engaging a lever 25 resting on the pivot 22a of the blade 3. In addition to the reciprocating movement of its carriage, the blade 3 receives an oscillating movement from a rotary cam 27 acting against the pressure of a spring 22b. Similar mechanism is provided for operating the blade 4. The depth of the fold is varied by making the cam 26, Fig. 10, tapered or stepped in the axial direction and adjusting it axially according to the desired depth of fold. In order that zigzag folds of continuously-varying width may be imparted to a sheet, mechanism for effecting axial movement of the cam 26 is provided comprising a pivoted arm 54 actuated by a grooved cam 60, its free end engaging a grooved boss 56 on the cam 26. The folded sheets pass between guides 14, 15 and press against a slidable back-stop 18 having attached thereto a weighted' cord passing over a pulley. If unfolded sheets are fed to the machine, the initial fold may be imparted to the front edge thereof by a reciprocating member co-operating with the feedfingers for this purpose.
Patent GB-555777-A (GB)
Title: Improvements in and relating to lubricators for the axles of colliery tubs and the like
IPC: B61F17/26
Filed: 1942-06-19
Abstract: 555,777. Lubricating. JOBLING & CO., Ltd., J. A., GRAVES, W. R., and BRECKENRIDGE, J. C. June 19, 1942, No. 8442. [Class 12 (iii)] A multi-lubricator for the axles of colliery tubs and the like comprises a lubricant reservoir 1 having a cover 2 which carries the cylinder components 3, 4 of two reciprocating pumps and a resiliently supported axle contactor bar 5 which carries the plunger components 6, 7 of the pumps. Spring-loaded lubricant applicators 8, 9 are arranged in series with the plungers 6, 7. The contactor bar 5 is formed at each end with a downwardlyextending limb 18 the lower end of which is formed with a recess 19 which co-operates with a horizontal pin 20 secured in a pocket 21 arranged on the outer side of the associated end wall of the reservoir 1. Each cylinder may be surrounded by a filter screen. The cylinders 3, 4 are suspended from the cover 2 by ball-and-socket joints 10, 11. In operation, as an axle contacts and depresses the bar 5, the pumps become primed, and as the axle contacts and depresses each applicator 8, 9, lubricant is ejected on to the axle.
Patent GB-271210-A (GB)
Title: Improvements in and relating to thermo-electric cooking ovens
IPC: F24C7/06
Filed: 1926-03-29
Abstract: 271,210. Sacerdote, S. March 29, 1926. Resistance ovens.-The heating elements 4 are displaceably disposed in channel shaped members 2 protected by heat insulating material so that the heat is first reflected towards the floor or roof from which it is diffused and reflected to ensure uniform heating. The heating elements do not occupy the whole length of the chamber 1 and may be displaced to attain transverse heat regulation. The channels may be of iron lined with insulating enamel. The auxiliary chamber 1<1> is heated by elements 8 in channels 9. Similar heating may be employed in the space 6 under the chamber 1. Heat accumulators 11 may be fitted as shown. Steam formed in the chamber 1 is removed by a draught pipe 14 communicating with a furnace 13 adjacent to the charging door.
Patent GB-577684-A (GB)
Title: Improvements in or relating to screens for viewing projected optical images
IPC: G03B21/60
Filed: 1944-05-05
Abstract: 577,684. Projection screens. CINEMATELEVISION, Ltd., LANCE, T. M. C, and COLLIER, T. W. May 5, 1944, No. 8561. [Class 97 (i)] An optical projection screen is composed of a plurality of small reflecting elements assembled by means carried at the rear of their reflecting surfaces and with some of their adjacent edges abutting. Their reflecting surfaces may be coincident with a plane or a curved geometric surface. The reflecting elements shown in Fig. 1 are formed as six-face box-like units pressed from a metal sheet of approximately .006" thick, with a reflecting surface 1 indented to form small concave mirrors. The upper and lower horizontal faces 3 and 4 have holes 5 (Fig. 3) and tongues 6 which can be bent up from the plane of the faces so that the elements can be assembled on tensioned wire, spring or rod supports 8 (Fig. 5) and held by bending the tongues back after assembly. Preferably, as shown in Fig. 5, the supports 8 are stretched between 'the frame members 10 and the elements are staggered so that they break joint. The elements may be formed with recesses on their vertical and horizontal faces to permit the passage of sound. In a modification, the elements may be formed of glass, transparent plastic or other transparent material, the rear surface being formed with small protuberances and then " back surface " silvered to, form small mirrors concave to the direction of the incident light. In a further modification, the front and rear surfaces are provided with a number of parallel grooves, those on one surface being at right angles to those on the other, the grooves forming a number of part cylindrical surfaces, and the rear face being " back surface " silvered. In modifications, the elements may be of triangular or hexagonal shape. and may be assembled by bolting a suitable projection on the rear of the element to a back plate. When used for a television screen, the supports 8 may be horizontal or at any angle to the vertical.
Patent GB-192318-A (GB)
Title: Improvements in bobbin-drag devices for spinning, twisting, roving and like machines
IPC: D01H7/44
Filed: 1922-03-24
Abstract: 192,318. Lindsay, R., and Malloch, J. M. March 24, 1922. Bobbins are provided with square recesses which engage corresponding spigots on the bobbin carriers A.
Patent GB-890573-A (GB)
Title: Improvements in and relating to fastener devices for securing an article to an apertured support
Inventor: CHRISTIAN JAMES BERTIE LEONARD
IPC: F16B5/12
Filed: 1959-03-12
Abstract: 890,573. Bolts &c. CARR FASTENER CO. Ltd. Jan. 29, 1960 [March 12, 1959], No. 8640/59. Class 89(1). A bolt with either a screwed or plain shank 1 is made of synthetic resin, e.g. nylon, and has a head 2 with a flexible arm 3 extending laterally of each of two opposed sides of the head. The arms are arcuate and extend towards the shank end remote from the head. For holding a moulding to a support, the arms clamp inturned flanges on the moulding against the adjacent face of the support. The head surface 2a which bears against said support may be undercut to provide an annular sealing flange.
Patent GB-104985-A (GB)
Title: Improved Method of and Means for "Boiling" Hams.
Inventor: STONE HENRY
IPC: A47J27/20
Filed: 1916-06-21
Abstract: 104,985. Stone, H. June 21, 1916. Cooking in water-tight vessels which are immersed in water.-Hams are placed in a rigid water-tight vessel of the shape of the ham, but containing no water. The vessel is then placed in water in any ordinary boiling-vessel, the water being maintained below the boiling-point. The ham is stated to retain its shape and to lose practically no weight. The vessel a of stout sheet metal, such as tin or aluminium, is permanently closed at its narrow end, while its opposite end is provided with a flange a' to which can be secured by bolts c and fly-nuts d a flat lid b, a rubber or like ring e being interposed. A safety-valve may be provided on the vessel.
Patent GB-1240957-A (GB)
Title: Igniter system for gas burners
IPC: F02P1/08
Filed: 1970-02-24
Abstract: 1,240,957. Igniter system; SCR control Circuits. FENWAL Inc. 24 Feb., 1970 [10 March, 1969], No. 8741/70. Headings F4F and F4T. [Also in Division H3] In an igniter system for a plurality of gas burner locations, an energy storage capacitor CE is connected in series with primary windings W1 and W2 of a spark coil 30, a rectifying diode D1 and a current-limiting resistor RL across a pair of leads L1 and L2 supplying alternating current, the energy storage capacitor CE being discharged through an SCR Q1 when the SCR is triggered by any of timing capacitors C1-C4 discharging through a corresponding neon lamp N1-N4, the appropriate timing capacitor being charged through a corresponding resistor R1- R4 when a corresponding switch S1-S4 (coupled to corresponding gas valves 21-24) is opened, so that the appropriate timing capacitor is no longer shunted to earth. The discharge of storage capacitor CE through the primaries W1 and W2 causes a high voltage pulse across each of the secondary windings W3 and W4, the ends of which are connected to electrodes 31-34, positioned adjacent to burners 11-14 respectively, producing sparks to ignite the burner when supplied with gas. Electrodes 41- 44 are also situated adjacent to the corresponding burners and, when ignition has taken place, provide a conduction path via the burning gas to shunt the corresponding timing capacitor to earth to prevent its being charged to the breakdown voltage of the corresponding neon lamp. Instead of the switches S1-S4, normally open switches (not shown) in series with each charging resistor R1-R4 may be provided to prevent each capacitor from charging when the fuel supply to the respective burner is cut off, each switch being closed when the corresponding one of valves 21-24 is opened. The igniter system may be used with a single burner for which it is desired to provide flame sensing and ignition at several locations. In this case, a single switch may be used to de-energize the entire circuit when ignition has taken place.
Patent GB-1475321-A (GB)
Title: Screw pumps
IPC: F04D3/02
Filed: 1975-02-26
Abstract: 1475321 Archimedean screw pumps SIGMUND PULSOMETER PUMPS Ltd 26 Feb 1975 [27 Feb 1974] 8932/74 Heading F1C An archimedean screw pump 5, Fig. 1, is made up of stages 5' each comprising a cylinder having one or more internal helicoidal vanes 9 and built up from plastics modules 30, Fig. 3, having a first portion 31 constituting part of the cylinder wall and a second portion 32 constituting part of the vane. A third portion (45), Fig. 5 (not shown), may depend from the inner edge of the second portion, its axial length being less than the distance between adjacent vanes to form part of a helical ribbon core coaxial with the cylinder. The modules are bonded together, the lower-end modules, which engage a member 58 are squared off by sawing off triangular pieces 33 which are inserted in triangular spaces at the upper end of the cylinder, a mandrel 52 carrying arms 62 maintaining alignment during the bonding process. A second end member (66), Fig. 6, (not shown), is added to the upper end of the cylinder, a glass fibre web then being bonded to the cylinder and end members. At the upper end of the pump a rigid lip 16 or a flexible annular flange is attached which engages an arcuate lip seal to prevent substantial backflow of liquid.
Patent GB-1438233-A (GB)
Title: Apparatus for cutting material into lengths
IPC: B23D33/00
Filed: 1974-02-28
Abstract: 1438233 Sawing G G BERG 28 Feb 1974 [1 March 1973] 9087/74 Heading B5L [Also in Division G3]  In a method of cutting cants or boards 4, 21 into a plurality of similar or dissimilar lengths, the length of board remaining after any given cut, as determined by the passage of a current; from source 16 via bus-bar 15 and contact member 17 fixed to member 3 contacting the rear of the remaining length; to one of the busbar sections 18, determines the length of the next cut to be made, the current passing from the contacted bus-bar section 18 via selectors 19 to one or other of lines A, B, C, selected, by means of assembly 23-26, in accordance with a program to minimize waste so that for each remaining length, a program predetermined one of abutments 6, 7, or 8 is raised to an active position. Passage of the current is enabled by operation of microswitch 14 by ejector 13, in ejecting the just cut length, return of the ejector to its starting position enabling feed forward of the remaining length of board, clamping of the board 4 and cutting of the next length being initiated by operation of microswitch 9, 10 or 11 of the next selected abutment, by the remaining length, fed forward by belt 2 supporting the member 3. Boards 21 of dissimilar uncut lengths within a given range may be stacked randomly, feed of all but the lowest being prevented by stop 22. The supply to the selected line A, B, or C operates a relay to enable pneumatic or hydraulic apparatus positioning the corresponding abutment in the active position. The program for minimizing water is detailed in the Specification. Embodiment with continuous feed forward, Fig. 2 (not shown).-Saw blade (27<SP>1</SP>), sections (18), and the abutments (6-8) move forward as an assembly during cutting, fixed inclined edge (30) ensuring that the blade moves into the board during the forward motion. The blade, in falling at the end of edge (30) operates a microswitch enabling the current source (16) and assembly (27<SP>1</SP>, 18, 6-8) returns to the starting position to remain stationary until the fore edge of the remaining length contacts the next selected abutment, whence advance of the assembly occurs again, operation of the microswitch having caused ejection of the last cut length. A chain (28), associated with rollers is provided for feeding the board.
Patent GB-236881-A (GB)
Title: Improvements in or relating to coin-freed locks
IPC: G07F17/14
Filed: 1924-04-10
Abstract: 236,881. Tonks, W. H., and Sparks, W. April 10, 1924. Fastenings for doors.-In a coin-freed lock the outside handle may be operated fully more than once before opening the door without thereby preventing access to the compartment and the inside handle, may be operated without imparting any movement to the indicator plate and/or the coin-slit closing device. The lock is provided with a bevel-ended sliding member 18, Fig. 1, adapted to be displaced into the lock casing against the action of a spring 22 by closing the door, the end 19 of the slide co-operating with a catch plate 20 on the door jamb. The catch plate has a projection 20<A> which engages a hole in the lock to ensure that it is placed in proper position, when the lock is being fixed. The slide 18 carries a spring-controlled detent 21 which engages under a projection 15A on an indicator plate 15 to hold this in its raised or " engaged position, so that, if the inside handle is operated without opening the door, the indica. tor plate does not fall. The plate 15 when raised acts on means for closing the coin-slit. Coin action, mechanical-connection and multiple coin.-A coin in a carrier 3 on the spindle 2 of the outside handle displaces a pivoted detent 7 to allow the handle to be turned. When the handle is turned fully, the coin rests on a projection 18<a> of the slide 18 and does not drop until the door is opened. Two halfpennies may be used instead of a penny, the carrier 3 being provided with a lever which forms a stop for the second halfpenny. Indicators. - The indicator 15 is raised and held in its raised position, until the door is opened and shut again, by a pivoted notched detent 17 engaging the projection 15<A> and actuated by a pin 16 on a slide 14, which is connected by a link 3a with the coin carrier 3. When the door is shut, the detent 21 on the slide 18 coacts with an incline 15<b> on the projection 15A so that it passes under the projection and restores the detent 17 to normal position. Coin-slit closing-devices; fraud, preventing.- The coin slot is closed by a pivoted gravity or spring-controlled member 24, Fig. 2, held in its slot-closing position by two depending levers 25 connected by a spring 26. A coin, when being inserted, separates the levers 25 and is then forced past the member 24 which is swung to an upright position. The member 24 is restored to its slot-closing position by a cam surface 27 on the slide 18 and is held therein by a projection 15<c> on the indicator plate. The slotclosing device prevents the withdrawal of a coin by a wire after it has released the lock.
Patent GB-764699-A (GB)
Title: Improvements in and relating to regulating transformers
Inventor: SPENCER JOHN CHARLES
IPC: H01F29/12
Filed: 1954-03-29
Abstract: 764,699. Transformers. METROPOLITANVICKERS ELECTRICAL CO., Ltd. Feb. 24, 1955 [March 29, 1954], No. 9140/54. Class 38 (2). In a variable reactance transformer having coaxial primary and secondary windings of which one, 7, is arranged to be moved axially into and out of the other 8, e.g. such a transformer as forms the subject of Specification 612,100, a magnetic shunt comprising parts 15, 16 is carried by the movable winding 7 so that the shunting effect varies from a maximum to a minimum as the winding 7 is moved from a position furthest from fixed winding 8 to being wholly inside that winding. Movement is effected by turning handle 13 to rotate screwthread 12 lying inside a central limb 4 of the core which has two outer limbs 6, 6<SP>1</SP> to form a tapering shell construction. Auxiliary windings may be provided as in Specification 612,100.