baber/WOPTO huggingface dataset:
Patent GB-453890-A (GB)
Title: Apparatus for recording sound on a film or reproducing sound from a film record
IPC: B29C45/44
Filed: 1935-03-21
Abstract: 453,890. Optical sound recording and reproducing apparatus. MIHALY, D. VON, 3, Hildegardstrasse, Wilmersdorf, and PINTSCH AKT.-GES., J., 71, Andreas Strasse, both in Berlin. March 21, 1935, No. 8903. Convention date, March 21, 1934. [Class 40 (ii)] Apparatus for recording sound on or reproducing sound from an endless band of film having a continuous photographic sound track extending a number of times round the band parallel to the edges of the film, the record shifting at intervals without interruption from one track to the next, comprises means for directing a narrow light beam on the film, means for driving the film in lengthwise direction, and means for causing intermittent movements of the light beam in a direction transversely of the film, the speed of said transverse movements being proportional to the speed of the lengthwise movement of the film. The Figures show apparatus for reproducing sound from an endless film 9 which is withdrawn from the inside of a coil 4 passed around a drum 8 containing a photo-cell 13 and paid on to the outside of the coil 4 as described in Specification 453,889 by a single sprocket 14 driven by a motor 16. The drum 8 is provided with a groove 10 in which is formed a narrow slit 12 opposite to which on the other side of the film is a mask 19 having an opening 20, the diameter of which is substantially equal to the width of any one of the sound tracks on the film, and through which light from a source 24 is directed by a condenser lens 25 and mirror 26. The light source, lens, mirror and mask are all carried by a frame 22 slidably mounted within the drum 8. The means for causing transverse movements of the light beam consists of a threaded spindle 30 passing through a nut 31, the upper end of the spindle bearing against a projection 29 on the frame 22 whilst its lower end carries a friction disc 32 against which a second loose rotatable friction disc 33 driven by a cord 36 from the motor 16 is pressed from below by a spring 34. The disc 32 is normally prevented from rotating by the armature 38 of an electromagnet 37 which engages against a pin 39 thereon. When, however, a roller 41 engages with a notch 42 in the edge of the film, a switch 40 is closed to energize the electromagnet 37, the armature 38 is raised and the disc 32 allowed to make a single revolution so as to raise the light beam to register with the next sound track. If desired, a handle may be provided to lift the armature 38 to allow the light beam to be registered with any desired sound track. Specification 453,888 also is referred to. The Specification as open to inspection under Sect. 91 comprises also a modification in which a two-armed lever is provided between the projection 29 and the spindle actuated by the disc 32. This subject-matter does not appear in the Specification as accepted.
Patent GB-1448968-A (GB)
Title: Swivel knife
IPC: B26B1/00
Filed: 1975-03-04
Abstract: 1448968 Knives CBS Inc 4 March 1975 [11 April 1974] 8956/75 Heading B4B A swivel knife comprises a blade unit 13 including a cylindrical body portion 14 fitted with a blade 25 and rotatably mounted in a handle 11 which is provided with a slot 16 aligned with a groove 15 in the body, and a manually actuable retaining means comprising a spring wire 18 inserted, at one end, in a bore 18 and formed, at the other end with a loop 19 which co-operates with the groove through the slot, the wire being actuable by bending against a spring bias thereof to disengage it from the groove and thereby permit removal of the body portion from the handle. The blade 25 is pressfitted into the body, e.g. of plastics material, the latter being rotatable in the bore 12 in the handle; a ball-bearing 19a is located in the bore to facilitate rotation of the body. In a modification, the blade is formed integrally with a metal body portion.
Patent GB-597812-A (GB)
Title: Improvements in or relating to the arrangement of pistoncontrolled ports in the cylinders of internal-combustion engines of the two-stroke-cycle compression-ignition type
IPC: F02B3/06
Filed: 1944-05-11
Abstract: 597,812. Two-stroke engines. PHILIPPOVIC, J. W. May 11, 1944, No. 9023. [Class 7 (ii)] In a two-stroke engine, particularly one in which the movement of the piston and cylinder is not constrained by a rotatirg crankshaft, convergent piston-controlled inlet ports and divergent piston-controlled exhaust ports are arranged so that the discharge of the exhaust gases induces the inflow of scavenging air. Two tengential inlet ports 37A, 37B, and two tangential exhaust ports 36A, 36B, are inclined towards the cylinder head and spaced as shown. The Figures show the application to the pile driver described in Specification 597,863.
Patent GB-472155-A (GB)
Title: Improvements in or relating to navigation aiding radio systems
IPC: G01S1/02
Filed: 1937-03-30
Abstract: 472,155. Directive wireless signals. SOC. FRANCAISE RADIO-ELECTRIQUE. March 30, 1937, No. 9048. Convention date, March 30, 1936. [Class 40 (v)] In a system in which a direction is defined by the equi-signal line of two overlapping beams, the carrier frequency is modulated at an audiofrequency and the two beams are produced at alternate half-cycles of the audio-frequency so that this frequency is not detectable at the output of a demodulating detector on the equisignal line. If a rotating beacon is provided, the modulating frequency is changed as the beacon rotates so that the direction of a beacon can be determined by the frequency not detected. A suitable indicator is shown in Fig. 4. Vibrating reeds, responsive to the various modulating frequencies are arranged in a semicircle and in any location all the reeds except one vibrate, the non-vibrating reed, such as that shown unshaded at 80‹, indicating the direction of the beacon relative to the detector. The position of the beacon aerials at which the various frequencies are transmitted may be altered from time to time so that a key is required to enable the direction to be determined. The transmitter may comprise two dipoles Z, Z<1> mounted “ # to # # apart which are rotated. The dipoles act in turn as aerial and reflector to produce overlapping beams and are energized in turn by valves A, A<1> which are fed in phase opposition through transformer T from a source of audio-frequency which varies in synchronism with rotation of the aerial system. Instead of rotating the aerials, a rotating beam can be produced by arranging five aerials 1, 2, 3, 4, 5 as shown in Figs. 7 and 9. The four aerials 1, 2, 3, 4 are energized by high-frequency valves A, A<1> via tuned circuit LC and dephasing circuits D<1>, D<2>, D3, D4. Two crossed frames between aerials 2, 4 and 1, 3 provide a rotating field and within this a rotating coil E picks up voltage of phase varying with coil position. The output of coil E feeds aerial 5 through valves B, B<1> which are made alternately effective by frequency F fed to the anodes. The frequency F varies between limits in synchronism with rotation of the coil E.
Patent GB-335229-A (GB)
Title: Improvements in combined wireless receiving sets and loud speakers
IPC: H05K11/00
Filed: 1929-03-20
Abstract: 335,229. Yrarrazaval, G. G. de Andia-. March 20, 1929. Loud-speakers.-A combined wireless receiver and loud-speaker comprises a receiving set located inside a hollow body above which a sound reproducing unit and a sound reflector are carried by arms projecting upward from a platform on the top of the hollow body. The body 1, Fig. 1, may be of ornamental shape and carries the receiver 3 mounted on the underside of a platform 2. The loud-speaker 5 is carried on arms 2a the sound being directed upwards bv a sound tube 6 on to a 45‹ cone reflector 8 which is carried by supports 7. The cone 8 carries an ornamental shade 9 which may constitute the aerial, and a number of lamps 10 may be carried by a hollow bead 11 on the sound tube 6, the leads from the aerial, lamps and loud-speaker passing down the hollow supports 7, 2a. In a modification, Fig. 4, not shown, the loud-speaker is mounted above the reflector on a baffle board, while a further embodiment Fig. 5 not shown incorporates a horn type loud-speaker with the unit mounted at the apex of the shade, a sound reflector also being employed. Switches are provided for the electric lamps and loud-speaker, with plug and socket connections for connecting the receiver to another loud-speaker and also to a gramophone pick-up. Specification 320,214 is referred to.
Patent GB-356100-A (GB)
IPC: H04M11/06
Filed: 1930-03-21
Abstract: 356,100. Automatic exchange systems. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. March 21, 1930, No. 9132. Convention date, April 11, 1929. [Class 40 (iv).] Telegraph connections are set up over existing telephone lines leading from subscribers to their exchanges by means of numerical selectors at the telephone exchange. The line may be extended to a telegraph line or to an automatic telegraph exchange. If the subscriber FA, Fig. 1, wishes to select the telegraph line TA, he removes his receiver and dials the particular number of the line TA, thereby setting the selector LW on terminals connected to a relay U, which switches the line a, b through to the relay N. The subscriber then presses key ET, energizing relay B and closing a circuit from the sub-station battery B<1> for the relay N, which causes relay R1 to energize relay C thereby causing the rotary magnet DAS1 to rotate the line finder AS1 until the calling line is found. Relays P, T, A, V energize in the usual way, relay A extending the line to the telegraph apparatus and relay T closing a fresh circuit for the relay U. To release the connection, the subscriber replaces key ET and depresses key AT, thereby de-energizing relays B, N, &c. To call a particular line from the telegraph station the corresponding key RT is depressed, thereby causing a free line finder to extend the telegraph line TA to the line a, b, say, as described above, the switch ar1, ar2 being then moved to send current of a frequency to which the relay R is tuned, thereby causing relay B to extend the line a, b to the telegraph receiving apparatus ER. In the arrangement shown in Figs. 2, 2a a combined telephone and telegraph subscriber may obtain a telegraph or a telephone connection to a combined subscriber of another telephone exchange, by dialling different numbers according to whether a telephone or a telegraph connection is desired. To obtain a telegraph connection, the completion of the preliminary dialling operates a relay U at the telephone exchange (FV1, Fig. 2a) which switches the line through to the selector devices of a telegraph exchange TV from which the line is extended to a combined subscriber F/T of the telephone exchange FV2 on the completion of dialling impulses which effect the operation of the U relay allocated to the desired subscriber at the exchange FV2. The transmission of the messages in the two directions is effected by relays Er, Es, operating contacts er, es and within the telegraph exchange is carried over two pairs of double lines as described in principle in Specification 306,406, [Class 40 (iii), Telegraphs, Electric]. A telephone conversation between subscribers of the exchanges FV1, FV2 is carried on over the line VL connecting the two telephone exchanges.
Patent GB-564781-A (GB)
Title: Improvements relating to milling machines, lathes and other electro-motor driven machine tools
IPC: B23Q5/04
Filed: 1943-06-08
Abstract: 564,781. Variable - - speed gearing. CASH, J. June 8, 1943, No. 9182. [Class 80 (ii)] [Also in Group XXII] In a lathe, milling-machine or other machine tool having stepped pulleys on a headstock and countershaft which is driven by an electric motor, the motor and countershaft are carried by a plate which is slidable to facilitate belt changing for varying the machine spindle speed. As applied to a milling-machine, the stepped headstock pulleys 6 are belt driven from the countershaft pulleys 7 which, together with gearing 11 and motor 9, are carried by a plate 13a slidable in guides on the machine pillar 4. Vertical movement of the plate is effected by a disc 18a rotatable on a pivot 4c on the pillar by a handle 18b and having an eccentric groove 18 acting on a roller 13c carried by the plate 13a, the weight of the plate &c. being partly balanced by springs 14 to assist in raising it. In operation, after stopping the motor, the plate is raised to allow the operator to insert his hand in the pillar to move the belt onto the required pulleys, after which the plate is lowered until the desired belt tension has been obtained and is then locked by a hand-operated nut 17c acting on a bevelled jib on one of the guides for the plate. The countershaft is supported by a bearing 12 on a bracket 13 projecting from the plate 13a through an aperture 4a in the pillar, and an oil pump 19 driven from a pulley 20 on the countershaft may be mounted on the bracket. The hand aperture in the pillar 4 for giving access to the belt may be provided with a hinged cover which is locked in the closed position unless the motor starter is switched off.
Patent GB-665905-A (GB)
Title: Improvements in or relating to hitch connections between tractive vehicles and devices trailed thereby
Inventor: SHERWEN THEO
IPC: B62D49/08
Filed: 1947-12-08
Abstract: 665,905. Tractor-trailer couplings. FERGUSON HOLDINGS, Ltd., H. Nov. 13, 1948 [Dec. 8, 1947]. No. 9199/50. Divided out of 665.827. Class 103(v) In a tractor-trailer coupling of the type described in Specification 665,827 whereby it is possible for the tractor driver to use the hydraulic power lift to engage the coupling. hook 27 on the tractor with the tow-bar 20 on the trailer without leaving his seat, the claims are directed mainly towards the crossbar 30 which is provided to limit the possible rearing angle of the tractor. The bar 30 has at its ends two pins 29A which serve to connect the usual draught links 1 with further links 29 coupled at their lower ends to the hook arm 26, this arrangement ensuring that the hook cannot be engaged by power operation unless the crossbar 30 is in place. Specifications 470,069, 510,352, [both in Group XXXI], and 665,904 also are referred to.
Patent GB-714959-A (GB)
Title: Improvements in or relating to belt fasteners
IPC: F16G3/00
Filed: 1952-04-10
Abstract: 714, 959. Belt-fastening appliances. MATTHAEI, C. April 10, 1952 [May 4, 1951], No. 9228/52. Class 80(1) In a combined belt-cutting and wire-hookpressing device for a conveyer or other belt fastening, pivoted jaws which clinch one hook at a time are automatically advanced across the belt after each jaw closure and may be used either with hooks held spaced on a paper strip or with a hook strip comprising side-by-side hooks which are directly connected togethere.g. by lacquer or solder. The pressing jaws are actuated by two hand levers 5, 6, Fig. 8, while the belt 11 is held between upper and lower clamping bars 17 secured to fixed supports 18, 19, the upper bar 17 having a rack 16 which is engaged by a pawl 15 operated by the lever 5 to feed the pressing device across the belt by one hook space each time the jaws are opened. Preferably two racks 16 are provided so that the pressing device, which is slidable on the bar 17, can function on either side thereof. The bar 17 has various slots, Fig. 14 (not shown), to receive the end of an adjusting bar for locating the belt at right angles to the bar 17. A removable rod 24 supports the hooks and shapes the apices, a hook strip being held in a magazine 12 and pressed by a spring- loaded slide 13 against the pressing jaws. Each jaw 4, Fig. 3, is pivotally mounted by segments 3 on an axis tangential to the hooks and has a central pressing surface 7 which is flanked on one side by a recessed part to clear the hooks already pressed in. and on the other side by an inclined groove 9 whose edge separates the leading hook of the strip, this hook being then positioned and partially pressed into the belt by the groove 9. The cutting device, Fig. 10, is slidable along the bar 17 and comprises a knife 51 actuated by a lever 52. In a modification the magazine 12 is dispensed with and the hooks are held spaced in a paper strip, the pawl-and-rack feed of a pair of plain jaws corresponding to the hook spacing on the paper. Various modifications are suggested. The hooks may be loose in a magazine or held on a paper strip in a magazine; each jaw closure may press two or more hooks simultaneously ; a retaining comb may be employed ; the belt may be cut before being clamped and an abutment be provided to position the belt in the clamp ; the cutting and pressing devices may be combined to operate together; previously pressed-in hooks may be used as a feeding rack.
Patent GB-595088-A (GB)
Title: Improvements in or relating to luminous signs
IPC: H05B41/24
Filed: 1945-04-13
Abstract: 595,088. Signs. ACE ELECTRONICS, Ltd., WELCH, L. C., and COOK, R. J. April 13, 1945, No. 9253. [Classes 3 (i) and 3 (ii)] [Also in Group XL] A sign comprises a luminous discharge tube in the form of a letter or other design to any chosen point in which high-frequency oscillations are applied. The amplitude of the oscillations can be varied so as repeatedly to produce a glow which begins locally and extends along the tube until it fills it with light. The circuit is shown in the Figure, the oscillator valve 4 having a screengrid 12 energised with current from a source 5 through a 3-electrode valve 13. The plate current for the valve 4 passes from the source 5 through an adjustable inductance coil 6. The grid 16 of the valve 13 is connected to a time-base circuit comprising a condenser 17 charged through a resistance 18 and discharged through a thyratron 19. The outer terminal of the condenser 17 may be earthed or connected to a current source of adjustable negative potential. A resistance 21 may be provided to limit the grid current of valve 13. When the condenser 17 is discharged, the potential of grid 16 falls to a low value so that the space-current of valve 13 is reduced to zero. The space-current of valve 13 is then supplied entirely through the resistance 21, and the output of the valve 4 is thus reduced so that the glow produced is confined to the region of the terminal. The current through the resistance 18 now charges the condenser 17 so that the potential of the valve 13 increases at a rate determined by the time-constant of the condenser 17 and resistance 18, and this causes a corresponding increase in the potential of the grid 12 so that the plate current of valve 4 increases progressively. When the potential of the grid 16 reaches a predetermined value the thyratron 19 fires, so that the condenser 17 is again discharged, and the tube glow disappears. The resistance 20 enables the tube to start glowing slowly from zero position, instead of suddenly striking some inches of gas and proceeding slowly therefrom. By adjusting the potential of the negative current source, the duration of the off-period at the end of each cycle can be varied. The discharge may be arranged to take place when the glow just fills the tube, or later, or earlier. When later, the glow may increase in intensity after the tube is filled. Alternate light and dark regions may be produced in the glow by adjusting the resistance 11.
Patent GB-527293-A (GB)
Title: Improvements relating to annealing metal alloys
IPC: C22F1/00
Filed: 1939-03-24
Abstract: 527,293. Annealing. ELECTRIC RESISTANCE FURNACE CO., Ltd., and KNIGHT, H. March 24, 1939, No. 9286. [Class 72] In the annealing of metal alloys of the kind comprising a component metal having a lower melting point than the annealing temperature of the alloy, the alloy is first heated to the annealing temperature in an atmosphere sufficiently oxidizing to produce a protective coating of an oxide of one or more of the component metals and then subjected to a temperature below the melting point of the lowest melting point metal in a reducing atmosphere which reduces the oxide layer to the metallic state. When heating brass, it is heated to 550‹-700‹C., preferably 650‹C., in an inert atmosphere containing 0.5 per cent. of oxygen in a sealed container placed in an electric furnace for the required time and the furnace removed. An inert gas containing 3 per cent. of carbon monoxide is now pumped into the container and by the time the temperature has reached 350‹- 400‹C. the container is full of the gas. When the charge has finally cooled, the oxide coating has been reduced.
Patent GB-538076-A (GB)
Title: Improvements in or relating to cooling towers
IPC: F28F25/08
Filed: 1940-05-27
Abstract: 538,076. Water cooling towers. MOUCHEL & PARTNERS, Ltd., L. G., GERARD, M. E., and ELMER, R. B. May 27, 1940, No. 9286. [Class 64 (i)] The louvre packing of a cooling tower is built up of superposed rows of grids a supported on posts i. In a circular tower, the grids are of trapezoidal shape and arranged in annular rows with their shorter and sloping sides next each other and spaced a grid's width apart: The grids of each annular row above the first bridge the spaces between the grids of the next lower row.
Patent GB-437364-A (GB)
Title: Improvements in electrical starting systems for internal combustion engines
Filed: 1934-03-24
Abstract: 437,364. Starting prime movers; centrifugal switches. ECLIPSE MACHINE CO., Elmira, New York, U.S.A. March 24, 1934, No. 9290. Convention date, March 25, 1933. [Class 38 (iv)] [See also Group XXXVII] An internal-combustion engine is cranked by a starting motor when closure of the electromagnetic starting switch 4, Fig. 1, is produced by energization of its coil 9 from the battery 1 on closure of the ignition switch 7. The circuit of coil 9 contains a resistance 12 shunted by contacts 13, these contacts being opened by movement of a diaphragm 15 responsive to engine suction so that insertion of resistance 12 in circuit with coil 9 reduces the current through coil 9 to a holding valve. If the engine suction acting on 15 fails, reclosure of contacts 13 is delayed by action of the leakage valve 30. When the engine attains a sufficient speed, the back E.M.F. of the engine driven generator, in series with coil 9 causes deenergization of this coil with consequent opening of the electromagnetic switch 4 and de-energization of the starting motor. In an alternative arrangement, Fig. 2, the resistance 12 is shunted by centrifugally operated switch contacts 21, 22 so that the current in coil 9 is reduced to a holding value when the engine attains a predetermined speed. The generator shaft 29 is axially drilled to take a flat ended plunger 34 bearing at its inner end on a flat on a transverse pin 32 carrying a ring 31. When the shaft 29 begins to revolve, ring 31 is moved perpendicular thereto causing plunger 34 to move outwards so that the bellcrank lever 25 is moved against the spring 27 to open contacts 21, 22, breaking the short circuit across resistance 12.