baber/WOPTO huggingface dataset:
Patent GB-1017304-A (GB)
Title: Photographic camera
IPC: G03B17/42
Filed: 1963-03-04
Abstract: 1,017,304. Film feed for photographic cameras. AGFA, A.G. March 4, 1963 [March 2, 1962], No. 8566/63. Heading G2A. A photographic camera having a reversible motor for film advance and rewind has means for changing from rewind to film advance actuated by operation of a moveable portion of the camera body giving access to the film compartment of the camera. In the embodiment shown the film in camera 1 is advance by motor 2 when contacts 4a, 4b, 4d, 4e are closed and rewound when contacts 4b, 4c, 4e, 4f are closed in known manner, contacts 4e, 4b being connected by an insulating strip 5 and spring urged into the film advance position. Strip 5 is coupled by a lever 7 pivoted at 6 to a two armed lever 8 pivoted at 9 so that when lever 8 is rotated by means of finger piece 8b the contacts are moved to the film rewind position. A two arm lever 11 is spring urged towards arm 8c to rotate lever 8 into the film advance position but is normally held away from lever 8 by the removable camera back against which it bears. A doubleexposure preventing latch is controlled by lever 7 through pivoted lever 14.
Patent GB-1119866-A (GB)
Title: Improvements in internal combustion engines
Inventor: STARK FRANK HENRY
IPC: F02M35/02
Filed: 1966-02-26
Abstract: 1,119,866. Air filter; centrifugal separator. ROLLS-ROYCE Ltd. 10 Feb., 1967 [26 Feb., 1966], No. 8585/66. Headings BIT and B2P. [Also in Division Fl]  An I-C engine air intake system comprises a static air filter 10 and a centrifugal separator 8 driving a rotor 7 driven from an engine component, valve means 11 being movable from a first position, in which the static filter 10 is operative, to a second position in which filter 10 is inoperative and the air passes only through the separator 8. In the supercharged engine shown the separator 8 is upstream of the compressor 2 and at low speeds the air passes through the filter 10 and separator 8 in series. Above a predetermined speed the valves 11, operated by a speed responsive device, shut off the filter 10. In a modification the filter 10 is downstream of the compressor. 2 so that at low speeds the air passes only through the filter 10.
Patent GB-943040-A (GB)
Title: Apparatus for maintaining a predetermined temperature in a plurality of heaters
Inventor: CHUBB ALEXANDER ALBERT
IPC: G05D23/22
Filed: 1961-03-09
Abstract: 943,040. Automatic heating systems. ERNEST SCRAGG & SONS Ltd. March 30,1962 [March 9, 1960], No. 8602/61. Addition to 915,138. Heading G3R. A plurality of heaters 11 each having a temperature sensitive resistor 12 and a controller associated therewith has a common control device e.g. comprising a D.C. fed potentiometer 17 acting to adjust a common reference point. Each resistor 12 is serially connected to another resistor (not shown) to form with the potentiometer 17 the arms of a bridge network with a transistor amplifier 13 connected across one diagonal which controls the saturation of a transductor 14.
Patent GB-440534-A (GB)
Title: Improvements in or relating to eye shields for head coverings
IPC: A61F9/04
Filed: 1935-03-20
Abstract: 440,534. Eye-shades for head coverings. MELHUISH, E. R., Waterditch, Pontner, Ringwood, Hampshire. March 20, 1935, 8628. [Class 63] An eye-shade F for caps and other head coverings is adapted to slide between the two layers H, J, of a cap peak, and is provided with recesses L which are engaged by rivets C<1> to limit the outward movement of the shade. The outer edges of the shade F are guided by means of pieces of material K secured between the layers H, J, of the cap peak, and the shade is provided with a stiff hinge P so that the outer portion of the shade may be bent at any desired angle. The shade may be of any suitable material or colour, and two or more shades may be superimposed when it is desired to vary the opacity or depth of colour. In a modification, Fig. 6, two straps A each having projecting washers B<1>, B<2>, are secured to the underside of the peak, and the eye shade F is provided with a pair of slots D which are guided by means of the washers B<1> during the sliding movement of the shade, the washers B<2> being adapted to engage with recesses E in the shade when the latter is in its retracted position. In a further modification, a large headed stud may replace each of the straps A. Specification 10877 /02, [Class 63], is referred to.
Patent GB-1204624-A (GB)
Title: Electric lamps
Inventor: WRIGHT JOHN WILLOUGHBY THOMAS
IPC: H01J5/60
Filed: 1968-02-22
Abstract: 1,204,624. Capping incandescent and discharge lamps. THORN LIGHTING Ltd. 20 Feb., 1969 [22 Feb., 1968], No. 8728/68. Headings H1D and H1F. An electric lamp, having its envelope closed by a wedge seal through which at least one terminal lead passes, is fitted with an end cap formed with seating structures which receive and support the wedge seal, and the or each terminal lead is secured to the cap so as to hold the seal against the structures and prevent relative axial movement between the envelope and the cap. The figure shows an incandescent filament lamp having an envelope 12 closed by a wedge seal 14 and a cap 17 having internal lugs 21-24 co-operating with the sides of the seal. The lugs are formed by making V-shaped cuts in the wall of the cap and bending the cut metal parts inwardly, the cuts being so located and formed that the lugs fit the sides of the seal. The lead wires 15 pass through holes in the base 18 of the cap where they are welded or soldered to the cap. In a modification, Figs. 4 and 5 (not shown), the seating structures are constituted by an annular ring of suitable material sealed within the cap and provided with tapered recesses to receive the wedge seal. In a further modification, Figs. 6-8 (not shown), the cut-out lugs of the first embodiment are replaced by two pairs of indentations on the side wall of the cap. The invention may also be applied to fluorescent and discharge lamps and the caps may be of the bayonet, Edison screw or two-pin type.
Patent GB-551854-A (GB)
Title: Die heads
IPC: B23G5/12
Filed: 1941-07-10
Abstract: 551,854. Screwing die-heads. LANDIS MACHINE CO. July 10, 1941, No. 8751. Convention date, July 27, 1940. (Class 83 (iii)] A screw cutting die-head of the pull-off type has releasable latch means for holding the cutters in operative position and independent cam means for resetting the cutters and permitting the latch to be resilently re-engaged. The head comprises a shank 25 having forwardlyextending lugs 26 engaging recesses 27 in a relatively slidable head portion 20, the forward part 24 of which has slideways 31-34 for chaserholders 41, 42 &c. which may be similar to those described in Specification 534,948. Each holder has a recess for a tangential chaser 50 which is adjustable relative to a clamp member 60 by inter-fitting serrations 45. The holders are guided laterally by surfaces 84, 85 and are held against a bottom guide surface 81 by flush mounted gibs 91 secured by adjustable screws 115 and providing surfaces 106 bearing on the holder. Clearance is provided at 111. Cam portions 125 coact with cam surfaces on prongs 127 of the slidable closing-ring 130 to impart radial movement to the dies. The closing-ring is forced rearwardly to engage its end surface 131 with latch members 145 guided for radial movement in a locking-ring 150. A setting ring 160, which also serves to exclude dirt &c., screws at 162 over the head and has a flange 161 opposing rearward movement of the locking-ring 150. After the dies have been set to the required diameter the ring 160 is locked by a screw 168. The locking ring 150 has bores to receive springs 180 which act to draw a retaining ring 170 into contact with a flange 175 on the shank and to engage the locking ring with the other side of this flange. In operation, when the required thread length has been cut, the movement between work and head is interruptel by a stop and the front unit of the head then pulls away from the shoulder 132 against the springs 180. The latch surfaces 142, 190 then coact to move the latches outwards until the part 145 of the latch comes opposite its recess 133, thus allowing ring 130 to move back and open the dies. The springs 180 then act to re-engage the shoulders 132, 176. For resetting the die the locking ring has a pair of recesses 250, Fig. 6, coacting with pins 200 in the closing ring so that when the locking ring is slightly rotated by a handle 210 the closing ring is cammed forwardly until the latches are free to be moved by their springs into the working, Fig. 2, position. To assist in tripping the die manually the coacting surfaces 142 are eccentric to the head axes so that the latches may be moved partially outwards by the rotation of the ring 150 after which a slight forward pull on the front unit of the head will collapse the dies. An auxiliary cam may be used to actuate the handle for resetting instead of manual aperation. Specifications 419,188, 425,932, 462,412, 534,611 and U.S.A. Reissue Specification 20930 also are referred to.
Patent GB-784645-A (GB)
Title: A hydraulic press
IPC: B30B15/16
Filed: 1955-03-25
Abstract: 784,645. Moulding-presses. CKD CESKA LIPA, NARODNI PODNIK, and VLTAVSKY, M. March 25, 1955, No. 8756/55. Class 87(2). [Also in Groups XXII and XXIX] In a hydraulic press for moulding plastic materials, in which the resistance of the work changes during the application of pressure, a hydraulic accumulator is provided for maintaining the pressure substantially constant. For a working stroke liquid is supplied by a pump 8 through a reversing valve 12 to a working space 5 of the press cylinder above the press piston 2. When the pressure rises to 80 per cent of the desired working pressure, a valve 3 opens against the action of a spring 4 to put a gas loaded accumulator 6 into communication with the space 5. Thereafter the pressure rises more slowly than before as the accumulator is being charged, and when the working pressure is reached it is maintained constant by the accumulator. The press piston is returned by lowering the valve 12, the valve 3 closing when the pressure in the space 5 drops by 20 per cent. At the end of the return stroke the press piston uncovers an overflow port provided with a non- return valve 13. The pressure at which the valve 3 opens and closes may be adjusted by a screw 16.
Patent GB-160732-A (GB)
Title: Apparatus for computing by means of weighing operations
IPC: G01G19/00
Filed: 1921-03-22
Abstract: 160,732. Toledo Scale Co., (Assignees of Thomas, E. G.). March 22, 1920, [Convention date]. Computing-apparatus.-Relates to apparatus for computing by weighing operations, more particularly for determining weights per unit of length or area, or for determining the number of units in a given lot. The invention consists in indicating the quotient of the desired computation on an automatic commodity balancing mechanism, the dividend of the computation being represented by the weight of the commodity acting through a lever having a fixed fulcrum, the point of connection between the lever and the balancing mechanism or the commodity or both, being adjustable according to a known factor of the weight, which factor constitutes the divisor of the computation. In Fig. 1 is shown a weighing- scale for indicating on a dial weights per square yard of pieces of fabric of various lengths and widths. A bolt of cloth is placed on a pan 10 and the load is transmitted to a beam 14 by means of a lever 7, rod 6, horizontal lever 5, rod 12, and a slide 13. The slide 13 is adjusted over graduations a according to the width of the cloth. A hand-wheel 20 is then turned so as to traverse the dial 23 along a guide 56 and simultaneously to adjust a slide 32 over yard graduations b according to the number of linear yards in the bolt. The dial 23 (which contains any convenient load-balancing mechanism) then indicates the weight per square yard of the cloth. The beam 14 bears on its lower edge a third set of graduations c corresponding to the graduations a. When the slides 13, 32 are set to corresponding positions on the graduations a, c the dial 23 will then indicate on a second set of graduations the total weight of the commodity in the pan 10. When adjusting the slide 13, the lever 5 is temporarily disengaged from the rod 12 by turning a handle 52. A pair of spring-closed jaws 40, 41 connected by toothed quadrants 43, 44 hold the beam 14 in central position whilst the slide 32 is being adjusted. The beam is liberated for a weighing operation by means of a handle 46. The dial may be graduated to read in weights per linear yard. Besides variations in length and breadth, a third variable may be provided for by making the leverage of the lever 5 or the lever 7 variable, the dial being then graduated to read in weights per unit of volume. In a modified machine, the levers 5 and 7 are dispensed with and the goods pan is suspended directly from a fixed knife-edge on the beam the dial then read. ing in total weights and in weights per linear unit. The dial may be graduated to show weights per square yard if fabrics of uniform width are to be dealt with, or the slide 13 may be retained to compensate for variations in width The machine may be modified as described in Specification 182,931 for indicating the number of similar articles placed in bulk on the machine.
Patent GB-688093-A (GB)
Title: Improvements in or relating to apparatus for sharpening razor blades
IPC: B24D15/08
Filed: 1951-04-16
Abstract: 688,093. Sharpening razor blades. SANDOZ, C. E. April 16, 1951 [April 17, 1950], No. 8877/51. Class 60. A device for sharpening simultaneously the four flanks of the cutting edges of a doubleedged safety razor blade comprises a housing formed of two parts 1, 2 hinged together and containing three aligned gears 10, 11a, 11b rotatable through a step-up gearing 7, 8 by a knob 6, studs 15a, 15b which are mounted on the gears 11a, 11b for engagement with the blade 20 and carry a link 13 also provided with a stud, 14, for engaging the blade, a pair of grinding stones 16 mounted in each of the parts 1, 2 in oppositely-disposed relationship, and means to retain and guide the stones in the housing. The stones 16, which are formed with teeth inclined at the desired blade angle, Fig. 4, and capable of meshing when the blade 20 has been removed, are urged by springs 17 to project through slots formed in retaining plates 18 adapted to engage lugs 22 on the ends of the stones in order to prevent them from springing out of the housing. Holes formed in the plates 18 permit the studs 14, 15a, 15b to move along circular paths as the knob 6 is rotated by hand or by the cord 21, this rotation being transmitted through the gears 8, 10 which are connected. together. The eccentricity of the studs 14, 15a, 15b is such as to move the blade laterally between limits extending from a point on the teeth, to a point beyond the high edge thereof. A hinge is provided for the parts 1, 2 in the extended edges of the plates 18, and the stones are guided by bosses 23 projecting from the parts 1, 2.
Patent GB-510905-A (GB)
Title: Improvements in and connected with control-lever fittings for use with bowden cables
IPC: B62L3/02
Filed: 1938-03-24
Abstract: 510,905. Handle-bar &c. control levers. LEWIS, W. J. March 24, 1938, No. 9003. [Class 136 (i)] In control-lever fittings for use with Bowden cables, of the type in which the control-lever is fulcrumed to a U-shaped bracket adapted to be clamped to a handle-bar or like supporting- member by a band-clip connected to a single screw-threaded clamping-device disposed between the sides of the bracket, the screwthreaded clamping-device is disposed on the bracket substantially midway between the lever fulcrum and the cable-sheath abutment, and entirely separate of such abutment. An attachment bracket 1 is formed of sheet metal bent to a U-shape with bulging sides 2, Fig. 3, between which an operating-lever 3 is pivoted at 4. The edges 5 of the sides 3 and a recess 14 in the web 12 bear against the handler-bar or other tubular member 7, to which the bracket 1 is attached by a clip 8, the lugs of which are doubled-over ,and pierced to receive trunnions 18 on the head of a pivoted screw-threaded shank 19, which is passed between the sides of the bracket and engaged by a nut 20 and washer 22, whereby the clip and bracket are clamped to the handle-bar &c. 7. The web 12 of the bracket is pierced at 15 to receive a nipple 16 forming an abutment for the sheath of the cable.
Patent GB-724828-A (GB)
Title: Improvements in thread trimming machines for textile fabrics
Inventor: STOUT HAROLD EDGAR
IPC: D06C13/08
Filed: 1953-04-01
Abstract: 724,828. Trimming fabrics. TEXTILE TRIMMING & BOARDING MACHINE CO. April 1, 1953, No. 9086/53. Class 42 (1). In a thread-trimming machine for textile fabrics, of the kind in which a trimming head comprising thread clippers and a suction nozzle is movable over the surface of the fabric, a cutting device is yieldingly anchored to the trimming head for cutting open loops of thread so that the separated thread ends can be trimmed by the clippers. The cutting device comprises a channel 5, adjustably fixed to the nozzle housing 4 of the trimming head by screws 3 passing through slots in a flange 1 of channel 5, and a blade 14 in a holder 8 adjustably pivoted in channel 5 at 7. Holder 8 is pressed towards flange 1 by a leaf-spring 21, but yields against the spring pressure when pressed against the fabric as shown; a set-screw 19 carried by holder 8 limits the rearward movement of the holder. The forward end of holder 8 is formed as a pilot member 12, the top of which forms a continuation of the cutting edge of blade 14. An inverted channel guard 17 for blade 14 is angularly adjustable about a clamping bolt 18. In operation, pilot member 12 is passed through thread loops which are cut by blade 14; long loops are forced against the blade by the sides of guard 17. The cut threads are positioned, for trimming by the clippers, by a nose-piece 23 as described in Specification 718,152.
Patent GB-1502854-A (GB)
Title: Pressing piston
IPC: B30B12/00
Filed: 1975-03-05
Abstract: 1502854 Compression moulding of powder H KARLSSON 5 March 1975 [8 March 1974] 9206/75 Heading B5A A piston 1 in a chamber 3 for pressing, e.g. wax powder to form candles, has a skirt containing plugs 2, e.g. of rubber, providing a gap 4 for venting air from the powder. The plugs are arranged in overlapping rows so that the chamber wall is cleaned during piston reciprocation.
Patent GB-937151-A (GB)
Title: Method of manufacturing selenium rectifiers and rectifiers manufactured thereby
Inventor: GILBERT JOSEPH
IPC: H01L21/105
Filed: 1961-03-14
Abstract: 937,151. Selenium rectifiers. WESTING- HOUSE BRAKE & SIGNAL CO. Ltd. Jan. 9, 1962 [March 14, 1961], No. 9232/61. Class 37. A method of manufacturing a selenium rectifier includes the steps of coating a metallic base with selenium having a halogen (preferably chlorine) content between 50 and 600 parts per million by weight, the coating being applied by vaporization, crystallizing the coating, depositing by vaporization on the coating a barrier layer, the layer comprising a mixture of cadmium sulphide and selenium together with thallium, depositing a counter-electrode on the barrier layer and subsequently annealing the barrier layer so as to fuse the counter-electrode. The barrier layer may be applied in two stages, the first stage consisting of depositing pure selenium and the second stage consisting of depositing a mixture of cadmiun sulphide and selenium together with thallium. The metallic base is of steel or aluminium, roughened by shot-blasting, then nickel-plated and subsequently coated with a mixture of tellurium and bismuth applied in vacuo. The counter electrode is a tin-cadmium alloy.
Patent GB-705254-A (GB)
Title: Improved method for producing bodies or coverings of hardening or setting material
IPC: B28B1/30
Filed: 1950-04-14
Abstract: A layer of fabric or knitted material which may contain stiffening wires is given a covering layer of gypsum, plaster or like cementitious material in a dry unhardened condition.  This layer may be applied as described in Specification 483,636, [Group VI].  The covering layer is then plasticized by moistening with water which may be coloured and shaped on a mould or on a core which may be resilient.  In a modification the layer may be plasticized after shaping.  Glue may be added to the gypsum to stiffen it.  The Specification refers to forming dolls' heads and models.
Patent GB-1247864-A (GB)
Title: Yarn-oiling equipment
Inventor: PARKER WALTER
IPC: D01H13/30
Filed: 1968-02-27
Abstract: 1,247,864. Yarn-oiling apparatus. ERNEST SCRAGG & SONS Ltd. 20 Feb., 1969 [27 Feb., 1968], No. 9293/68. Heading D1L. Yarn 14 is oiled by passage over a roller 13 partially immersed in oil in the shallow compartment 17 of a trough 11, the level 12 of the oil being kept constant by an overflow edge which leads to a deeper compartment 18 which may be entirely to one side of the shallow compartment (as shown), or may extend partially beneath it (Fig. 3). A plurality of rollers 13 may be provided alongside one another in the container which may be formed integrally by pressing or extrusion.
Patent GB-437593-A (GB)
Title: Improvements in time keeping mechanism, more especially for clocks
IPC: G04C15/00
Filed: 1934-03-24
Abstract: 437,593. Electric clocks. DORER, P. O., 219, Dollis Hill Lane, Cricklewood, London. March 24, 1934, No. 9309. [Class 139] In a clock normally driven by a synchronous electric motor and in which a spring driven auxiliary mechanism takes over the drive when the current fails, the auxiliary mechanism is controlled by an escapement, for example, as shown in Specifications 220,601, 225,522, [both in Class 106 (iii)], which oscillates very rapidly and starts readily directly it is freed. The synchronous motor 10 drives through gearing 11 a wheel 12 loose on the time indicating or controlling shaft 13, and winds up the spring- 14 of the auxiliary mechanism through gearing 19, overwinding being prevented by the spring slipping in the barrel. The wheel 12 is rigid with a freely mounted ratchet wheel 23 coacting with a detent 25 pivoted to a plate 24 rigid with the time shaft 13. The spring 14 is connected through gearing 15 to a pinion 16 loose on shaft 13 and through gearing 17 to the escapement 18 normally locked by an arm 22 rigid with the armature 21 of an electromagnet 20 energized with the motor 10. A friction disc 28 is loosely mounted between the wheels 12, 23, a recess 27 therein coacting with an arm 26 of the detent 25. Normally, the drag on the disc 28 forces the detent 25 into engagement with the teeth of ratchet wheel 23 and the time shaft 13 is driven through 12, 23, 25, 24. When the current supply fails, the auxiliary mechanism is released and the pinion 16 drives the time shaft 13 through a friction disc 29 against which it is pressed by a spring 30, the detent 25 being released from engagement with the ratchet wheel 23. The time shaft 13 may drive normal clock hands or other indicating devices, or may operate electric contacts to control other devices, as in the case of a master clock. In the latter case, the spindle 13 is rotated at, for example, once per minute, and actuates the contacts directly. Modifications. Alternative two-way means for driving the time shaft respectively by the electric motor and by the auxiliary mechanism may be used. The escapement may be locked by means operated directly by the magnetic field of the motor. Reference has been directed by the Comptroller to British Specifications 125,766, [Class 139], 389,406, and 389,908, and to U.S.A. Specification 1,912,650.