baber/WOPTO huggingface dataset:
Patent GB-784482-A (GB)
Title: An optical projection apparatus with picture changer for the progressive projection of lantern slides
IPC: G03B23/04
Filed: 1956-02-28
Abstract: 784,482. Optical-projection apparatus. AGFA CAMERA-WERK AKT.-GES. Feb. 28, 1956 [March 1, 1955], No. 6241/56. Class 97(1) In an optical projector with a slide changer the slides are accommodated, upright and parellel, in a container beneath the projector proper, the container being open topped and having an aperture in the base whereby successive slides can be engaged and pushed up into projection position, the container being advanced after the projection of each slide to bring the next into position for projection, the slide engaging member moving in a curved path to reduce the extent of its vertical movement. In the form shown in Fig. 1 the slides are disposed in channels 12a in the side walls of a box 12 and are pushed upwards for projection, into a channel between the face of a partition 8 and guides 16. The forked pusher member 14a is secured to one end of a steel tape 14 which is slightly curved in transverse crosssection to stiffen it except where it is flattened when led round a roller 17, which, and a roller 18, carry an endless band 19 to which the other end of the tape 14 is secured at 20. The curved transverse crosssection of the tape 14 is maintained by a guide 21 of curved cross-section. The band 19 and hence the tape 14, are actuated, to feed the shoes by the mechanism shown in Fig. 2. Clockwise rotation of a handwheel 23 turns a pivot 22 to which is attached a lever 24, the end 24a of which is attached to the band 19, whereby a slide is lifted to the projection position. At the end of this movement the end 24b of the lever 24 strikes the end of a sliding member 28 coupled to lift a flap 27, pivoted at 27a, which covers the projection aperture during slide changing. A portion of the flap when lifted, bears on spring blades 25 to depress them to grip the slide being projected. During the feed movement of the lever 24 it also bears on a roller 34b at the end of a lever 34 pivoted at 35 and coupled at its lower end 33 to a pawl engaging a rack 12e on the bottom of the box 12, whereby the pawl is pulled back, to engage the next tooth of the rack, against the tension of the spring 36. The box meanwhile is held in position by a latch 31, pivoted at 30 and carrying a tooth 31a also engaging the rack 12e. As the handwheel. 23 and lever 24 are returned to their initial positions to return the slide to the box 12, an abutment 24c on the lever 24 strikes the latch 31 to release the box 12 which is then moved forward by the spring 36 to bring the next slide into position for projection. In another embodiment the projection aperture is covered during slide'changing by a sliding plate which is pushed upwardly by the slide itself as it is moved into position. To reduce the height needed for the movement of such plate it may be replaced by a number of strips which move down to cover different parts of the projection aperture but are moved up into superposition.
Patent GB-639699-A (GB)
Title: An improved method of and apparatus for simultaneously forming male and female moldsfor use in the shaping of glass sheets
IPC: B28B7/34
Filed: 1948-02-28
Abstract: 639,699. Bending glass sheets. LIBBYOWENS-FORD GLASS CO. Feb. 28, 1948, No. 6286. Convention date, March 27, 1940. [Class 56] Glass sheets are bent between opposed complementary concave and convex members of plaster of Paris, or of gypsum plaster, which members are made by positioning a pair of pattern moulds, in a mould box, in correctly spaced relationship, depositing a plaster composition between the moulds to form a master mould, drying the master mould and removing the patterns to produce cavities in the mould box which are filled with a plaster composition which, after drying, forms the bending members. In Fig. 2, the plaster members 14, 15 have shoulders 34, 35 on their vertical edges by which the angle plates 32, 33 secure them to flat metal backing members 27, carried by transverse beams 18, 19 actuated by the rams 20. The members 14, 15 have recesses 46 ... 49 to accommodate the tongs 11, which carry the glass sheet 10, as described in Specification 633,330, and the members are positioned relatively to the backing members 27 by resting at the bottom on a ledge secured to each member 27, and by a key 44 which engages recesses in the members 14, 15 and in the members 27. The mould box, Figs. 3, 4, in which the master mould 88 is made and in which, subsequently, the members 14, 15 are moulded, comprises sides 54, 55 hinged at 56 to bracket plates 57, e.g. three for each side, which are adjustable along a corresponding number of strips 60 secured by screws to the top 53 of the carriage 50, to vary the spacing of the sides. The bottom of the mould is closed by a wood or plaster block 74, and accurate surfaces are formed on the lower edges of the members 14, 15 to rest upon the locating ledges on the members 27, by metal strips 75, 76 which serve also to eject the plaster members 14, 15 from the mould when the sides 54, 55 are swung down. The sides are maintained in the correct vertical positions by bolts and nuts 66, 72. The end walls 77, 78 of the mould box, preferably of plaster, are clamped between the sides 54, 55 and are prevented from moving outwardly by a fixed vertical plate 79 and an angle plate 80 respectively, the plate 80 being adjustable along a slot 83 provided with a clamping bolt 82. The master mould 88 is formed, at its vertical edges, with V-shaped grooves 91, 92 which receive protuberances 93, 94 on the end walls whereby the master mould is located correctly. The master mould is recessed to hold blocks 99, 100 which form the tongs receiving recesses 46 ... 49 in the members 14, 15. A funnel 87 deposits plaster on both sides of the master mould. The rear faces and edges of the members 14, 15 may be coated with shellac to minimise the loss of moisture from the members during use, and a thin rubber sheet may be arranged between each of the members 14, 15 and the members 27.
Patent GB-429993-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H05B41/10
Filed: 1935-02-27
Abstract: 429,993. Discharge lamps. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Feb. 27, 1935, No. 6292. Convention date, Feb. 28, 1934. [Class 39 (i)] To permit heating of the thermionic cathode 3<1> before the lamp is subjected to the full discharge voltage, a timing device comprising a synchronous motor 21 in series with a pair of contacts 22, 23 is used to short-circuit the discharge path until the preliminary heating is effected. The motor drives through speed reducing gear a shaft 32 on which are two cams 30, 31 having notches 33, 36 relatively displaced a few degrees ; the Figure shows the parts in their normal rest position. As current is switched on the mains 5, the motor drives the cams and the contacts 22, 23 are at first held closed as the projection 34 on the contact arm rides on the circular part of the cam 30 ; when the notch 36 on cam 31 comes opposite the projection 37 the contacts 40, 41 complete a circuit through a relay 43 and the cathode 3<1>, the relay having holding-on contacts 48, 49 which maintains the circuit through the cathode. As the notch 33 comes round again the contacts 22, 23 are opened by the relay arm 46 and discharge across the lamps is started ; while current passes through the mains 5 the relay 43 holds the contacts 22, 23 open and maintains the cathode circuit. If the lamp does not start working when the contacts 22, 23 are separated a film cut-out 51 supported by contact arms 52, 53 breaks down and cuts the lamp out of circuit. As shown a second cathode 3 is connected directly to the transformer secondary 12 and two anodes 2, 21 are provided. The lamp has a filling of neon and sodium vapour.
Patent GB-608730-A (GB)
Title: Improvements relating to air operated actuators or motors
IPC: F01B19/02
Filed: 1946-02-28
Abstract: 608,730. Diaphragm pistons. PROSPERITY CO., Inc. Feb. 28, 1946, No. 6297. Convention date, June 7, 1945. [Class 122 (i)] [Also in Group XXVIII] A diaphragm piston for an air-operated motor (see. Group XXVIII) comprises a rubber disc 5 free of walls 2, 3 of the piston chamber 1, and is adapted when flexed to make sealing contact at least about its periphery with the wall 2 which is concave.
Patent GB-861786-A (GB)
Title: A window regulator
IPC: E05F11/44
Filed: 1959-02-24
Abstract: 861,786. Vehicle window regulators. ANDERSON CO. Feb. 24, 1959 [May 16, 1958), No. 6302/59. Class 20(3) A window regulator for moving a vehicle window guided to move in a predetermined compound path in the plane of the window between raised and lowered positions in guideways 21, 22, Fig. 1, within the vehicle comprises a travelling nut 51 on a vertical rotatable threaded shaft 47, rotated e.g. by an electric motor 43 through gearing 44, the nut 51 being linked to the lower edge 40 of the window by a linkage 62, Fig. 3, pivotally mounted at one end 65 to the nut on a pivot 64 perpendicular to the shaft 47 and at the other end 66 to the window panel edge portion 53 on a pivot 52 perpendicular to the plane of the window. When it is desired to give the window a transverse movement in addition to the movement parallel to the plane of the window as in the embodiment just described, the linkage shown in Fig. 8 is used and this comprises a lower link 146 pivoted to the travelling nut 130 on a pivot normal thereto and an upper link 143 secure to the window frame 136 by two spaced screws 158 and an intermediate link consisting of two members 144, 145 superposed on each other and pivoted together on a pivot 154, the member 144 being hinged to the upper link 143 on a hinge pin 147 parallel to the plane of the window 116 and the member 145 being hinged to the lower link 146 on a hinge pin 148 normal to the pivot 150. Such a mechanism is used when the window is curved as shown in Fig. 6, the window 135 being guided by rollers 139 running in guideways 133. These guideways are so shaped e.g. arcuate in a plane transverse to the window, as to permit the window to follow a path toward and away from the shaft 124 and the pivots 150, 154 permit the window to be driven forwardly in parallel to the plane of the window, and upwardly as the nut 130 advances up the shaft 124. Both mechanisms described have a toggle action when the window is nearing the fully raised position. The angle between the axis of the shaft 124, Fig. 7, and the line joining pivots 150 and 154 then approaching 45 degrees whereupon all or greater component of the force frorm the nut 130 to the pivot 154 is exerted in a forward direction for seating the window in a closed position.
Patent GB-392316-A (GB)
Title: Improvements in trawl fishing nets
IPC: A01K73/02
Filed: 1932-03-02
Abstract: 392,316. Trawling. JORDAIN, S. J., Bolton Street, SANDERS, F. C., King 'Street, and PITMAN, E. J., Mount Pleasant Road, all in Brixham, Devon. March 2, 1932, No. 6347. [Class 48.] The cord end of a trawl net is divided by a Y-shaped piece of netting d into upper and lower portions which are closed by draw cords d<1>, d<2>. Secured to the front of the netting d are flaps e, f, which are arranged to leave apertures o, k<1> for the fish and stones respectively. The sizes of these apertures can be varied by cords m, k.
Patent GB-535534-A (GB)
Title: Improved method of producing magnetic materials
IPC: H01F1/147
Filed: 1940-04-08
Abstract: 535,534. Nickel-iron alloys. NAAMLOOZE VENNOOTSCHAP PHILIPS, GLOEILAMPENFABRIEKEN. April 8, 1940, No. 6349. Convention date, April 11, 1939. Addition to 448,046. [Class 82 (i)] [Also in Group XXII] In making magnetic cores of the kind disclosed in the parent Specification, nickel-iron alloy containing under 0.01 per cent. of phosphorus is used. This is stated to reduce the hysteresis loss and a still greater reduction may be effected by adding to this alloy, during melting some calcium, or an alloy thereof, e.g. calcium-silicon or calcium-aluminium or both. An alloy comprising equal parts of iron and nickel and 0.003 per cent. of phosphorus which had 0.2 per cent. of calcium added during melting gave a hysteresis factor of 1.85 and one containing 0.004 of phosphorus with 0.6 added calcium-silicon a factor of 1.8.
Patent GB-451793-A (GB)
Title: A device for the marking of any pattern on a smooth rubber tyre to render same non-skidding
IPC: B29D30/68
Filed: 1935-11-07
Abstract: 451,793. Tool handles. DEAS, J., Longwood, Sutton Road, Walsall Nov. 7, 1935, No. 6447. [Class 61 (i)] [See also Group XVI] A branding-iron for rubber tyres has a handle stem 4 which is provided with a detachable handle 5 having an internal metal sleeve 6 and an asbestos sleeve 7 to insulate the handle. The sleeve 6 may be slightly tapered to provide a friction grip.
Patent GB-944511-A (GB)
Title: Improvements in or relating to gramophone records
Inventor: RAND WALTER LESLIE
IPC: G11B3/70
Filed: 1959-02-25
Abstract: 944,511. Gramophone records. ELECTRIC & MUSICAL INDUSTRIES Ltd. April 4, 1960 [Feb. 25, 1959], No. 6461/59. Heading G5R. A gramophone record comprises a separately formed centre-piece 4, thick enough to co-operate with centre-post type automatic record changers, fixed in the centre of a thin annulus 3 carrying the sound grooves. The centre-pieces may have radially grooved or roughened driving ribs 5 and a circumferential groove 9 into which the annulus is snapped. In further embodiments (Figs. 6-9, not shown) the annulus may have inwardly extending arcuate tongues engageable with co-operating arcuate grooves on the centre-piece by bayonet action or with alternate arcuate recesses on opposite faces of the centre-piece by snap action.
Patent GB-846460-A (GB)
Title: Improvements in friction drives for magnetic tape recorders
IPC: G11B15/50
Filed: 1956-08-13
Abstract: 846,460. Magnetic tape recorders. LOEWE, S. Aug. 13, 1956 [Aug. 19, 1955], No. 6475/60. Divided out of 846,269. Class 40 (2). The friction drive of a magnetic tape recorder is constructed to prevent the entry of dust to the frictionally engaged surfaces. In the body 1 is fitted a spindle 5 on which is mounted a pulley 2 driven through a belt 6 by a motor (not shown) and a friction disc 3, the drive from the pulley to the disc 3 being by means of a felt ring 8. Above the disc 3 is a reel 4 for the magnetic tape 7. Dust caused by abrasion of the tape is excluded from the ring 8 by a ring 9 upstanding from the pulley and entering without contact a groove 10 of the disc 3.
Patent GB-272284-A (GB)
Title: Apparatus for sterilizing milk cans, bottles and the like
IPC: A61L2/07
Filed: 1926-03-09
Abstract: 272,284. Brearley, H. March 9, 1926. Disinfecting-chambers.-Apparatus for sterilizing milk-cans, bottles, &c., comprises a cabinet A containing a number of steam chests B, C to which dry steam is supplied under pressure by internally arranged distributing pipes g<6> - - g<8> from a small boiler G heated by a gas, spirit paraffin, &c. burner, the hot gases from which pass through a jacketed space D in one of the steam chests. In the construction described, the cabinet is formed of galvanized or other sheet metal and has an upper steam chest B for treating small cans, bottles &c. which may rest on a wire grid therein, and a lower stream chest C for large cans which may be placed inverted over steam nozzles g<10> therein. A removable corrugated floor, or a removable chamber having a hinged lid and removable grids for supporting bottles &c. together with apertures above the nozzles g<10>, may be provided in the lower chest C. The supply of steam to the chests is controlled by a gravity safety valve g<13>, and by taps g<12>, g<11>. The floors of the chests may be inclined to one end where drain taps may be provided. The chests may have steam tight doors lined with asbestos or other insulating material. The boiler G comprises a copper tube in the form of an inner and outer conical coil which may be surrounded by refractory material or by a copper &c. casing g<4> packed with slag wool or other heat insulation. The top of the outer coil is connected by a pipe g, which has a control tap g<2> and may have a non-return valve, with a cistern g' or other water supply. Hot water for scalding &c. is obtained by-opening taps g<2>, g<3> and regulating the burner. The burner gases pass from boiler flue E through aperture E' into the jacket D of chest B, which they leave through opening F. One of the Provisional Specifications describes the use of a small vertical steam boiler having a central heating chamber in which a steam superheating coil connected to the steam space of the boiler may be placed, and the provision of hinged closing flaps on the steam nozzles in the chests.
Patent GB-829623-A (GB)
Title: Improvements relating to devices for fastening railway rails to sleepers
Inventor: IRVING JAMES
IPC: E01B9/34
Filed: 1955-03-07
Abstract: 829,623. Fastening railway rails. BAYLISS, JONES & BAYLISS Ltd. March 7, 1956 [March 7, 1955], No. 6569/55. Class 104 (2). A rail clip comprises a spring metal clip having upper and lower limbs 10, I integrally connected at their outer ends 13 and apertured (12) intermediate their ends to receive a fastening member 29 which, on tightening, causes the lower limb 10 to bear on the rail foot 23. The upper limb 11 overlaps the rail foot 23 and has an inner end portion 19 bent upwards, from a position adjacent the edge of the rail foot 23, at an angle, approximating that of the upper surface of the rail foot 23, to provide an indication for limiting the tightening of the member 29. The outer end 13 of the clip 10, 11, which may also be made in the form of an eye, is downwardly curved and engages a recess 26 in the sleeper 25 or a lower member 21 seated on the sleeper 25. The member 21 at its forward end 22 lies close to or abuts the rail foot 23. In the arrangement shown in Fig. 6, the clip 10, 11 is upwardly bowed. A base-plate 33 is formed with a shoulder 34 to abut the rail foot 23 and has a recess 35 to receive the outer end 13 of the clip. The width of the clip 10, 11 is equal to or less than twice the distance between the aperture 12 and the rail foot edge or the end 22 of the member 21 so that the clip can, on release of the fastening member 29, be rotated through 90 degrees from the rail engaging position to allow the removal and replacement of the rails. A number of clips provide a reception channel for the replacement rail to facilitate the installation of the new rail in correct gauge relationship with its companion rail. The forward end 20 of the upper limb 11 of the clip is of arcuate form. Specifications 829,624 and 829,625 are referred to.
Patent GB-1282275-A (GB)
Title: Improvements in or relating to apparatus for handling disabled persons
Inventor: JAMES DAVID RICHARD
IPC: A61G7/10
Filed: 1968-06-17
Abstract: 1282275 Invalid hoists MECANAIDS Ltd 16 June 1969 [17 June 1968] 6634/70 Divided out of 1282274 Heading B8H In an invalid hoist comprising a cantilever arm 10 which is movable on a telescopic column 7 and which is provided with an invalid support, as disclosed in Specification 1,282,274, the arm 10 is formed of two sections 20, 21 which are pivotally connected about an inclined axis 23. The outer end of the arm is provided with a rigid bearing supporting a hanger 14 provided with slings 16, 17. When the outer arm portion 21 is rotated through 180 degrees, Fig. 2 (not shown), to a downwardly directed position, it is adapted to support a rigid invalid support.
Patent GB-512326-A (GB)
Title: Improvements in or relating to knife sharpeners
IPC: B24D15/08
Filed: 1938-03-03
Abstract: 512,326. Sharpening knives. JAFFA, A. E. March 3, 1938, No. 6640. [Class 60] A sharpener for knives comprises a hardened steel &c. strip 10 having formed therein two or more teeth 11, 12, alternate teeth being set in opposite directions like the teeth of a saw, and the teeth being of such a length that they possess resiliency below the set portions; in sharpening, the knife edge is drawn longitudinally of the V formed by the teeth. The teeth may be curved and their surfaces may be grooved lengthwise, and saw cuts may be made to separate adjacent teeth. The uncut base portion of the strip may constitute or receive a holder or may be divided into two oppositely disposed flanges to be secured to a support. As shown in Fig. 4, the base of the sharpener is inserted in a groove 14 in a wooden or artificial resin holder 16, with the teeth in a recess 15, the walls 17 of which have therein slots 18 to guide the knife..In this construction a sharpener may be placed at each end of the holder. In a further form, the recess 15 is omitted and the transverse slot 18 has an enlarged part to receive the teeth.
Patent GB-1090202-A (GB)
Title: Improvements in or relating to sheet feeding mechanisms
Inventor: GATES ALBERT GEORGE RONALD
IPC: B65B41/04
Filed: 1965-02-16
Abstract: 1,090,202. Feeding Sheets. GESTETNER Ltd. Feb. 10, 1966 [Feb. 16, 1965], No. 6643/65. Heading B6B. Sheets are separated from the top of a pile 3 and fed to a duplicating or other machine by a reciprocating friction member 1 associated with a presser member 4, the latter being raised and lowered in synchronism with the movements of the separator 1 to engage and hold the rest of the sheets on the pile during the separation of the top sheet, and being readily removable from the separator structure. The separator 1 is carried by a mounting 2 for movement to the left in the lowered position to feed a sheet, and a raised position during a return stroke, by conventional means including two cams. The presser member 4 carries a back stop 14 for engaging the rear of the stack 3, and two rubber pads 15, one on each side of the stop 14, and is connected rotatably at 13 to the end of an arm 5 on a rod 6 which is axially slidable in a bracket 7. The bracket 7 is mounted on the mounting 2 for vertical movement thereon by means of rollers and guides 8, 9, and can be raised and lowered by a cam 10 on a driveshaft 11 which may control the movements of the separator 1. Thus, the presser member 4 and stop 14 can be adjusted relatively to the separator, and is raised and lowered in synchronism with the separator. A front stop 16 on the front plate 19 of the stack holder is pivotal by cam means to allow the top sheet to be separated. The assembly of presser 4, 14, 5, 6, 7, 8, 10 and 12 is duplicated on the other side of the stack 3, and each assembly is readily removable as a unit from the machine. In a modification (Figs. 2-6), the presser member (20) is adjustably secured on the lower limb (21) of a cranked support rod (22) carried by a block (23) which is slidably mounted on two parallel rods (24), but can be locked in position by a lever (26) and cam (27). The presser (20) has a back stop (30) for the stack (3) and a rubber pad (31) to engage the rear edge of the sheet below the uppermost sheet. The rods (24) are received in recesses in a block (33) which is guided for vertical movement by studs (35) on the machine frame (34) engaging grooves (36) in the block. A pin (38) on a camoperated lever (39) projects through a further groove (37) in the block (33), and this pin is engaged by the bottom edge of a plate (45) which is mounted for vertical adjustment on the block (33); thus the position of the plate (45) determines the vertical height of the presser (20), and the raising and lowering of the pin (38) causes raising and lowering of the block (33) and presser (20). The parts of this modification can also be removed as a unit from the machine.