baber/WOPTO huggingface dataset:
Patent GB-1529914-A (GB)
Title: Chrominance subcarrier regenerator
IPC: H04N9/455
Filed: 1976-02-20
Abstract: 1529914 Automatic frequency control PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 20 Feb 1976 [25 Feb 1975] 06782/76 Heading H3A The phase control circuit of the chrominance sub-carrier regenerator of a colour television receiver includes a filter between the output of the colour burst phase detector and the control input of the regenerator. The filter includes a resistor and a capacitor, at least part of the resistor being in parallel with a transistor so'that the time constant of the filter is reduced during the colour burst period by applying a gating signal to the base of the transistor. In the embodiment illustrated the chroma signal derived from the received signal passes to a colour processing unit 15 which feeds the display unit 75. A time base unit 27 provides line frequency pulses in response to sync. pulses derived from the received signal. The line frequency pulses and the chroma signal pass to a burst gate 19. The burst signal from the gate passes to a phase detector 31. The detector provides a signal indicative of the difference in phase between the burst and the output of a chrominance sub-carrier regenerator 41. The difference signal controls the phase of the regenerator via RC filter 49,51. The filter resistor is shunted by a transistor 55 controlled by a gating signal generator 61. Generator 61 is controlled by the line frequency pulses and by the output of a burst detector 35 which is fed with the burst signal from the burst gate and with a signal from regenerator 41. Line frequency pulses applied to the burst generator 61 cause it to give a gating signal during a colour burst period. The signal turns transistor 55 on, reducing the time constant of the filter so that capacitor 51 can be rapidly charged to the difference signal level at the output of the phase detector 31. When the regenerator is not synchronized with the burst the generator 61 again gives a gating signal. In the absence of the gating signal the filter has a long time constant so that the sub-carrier regenerator control circuit is insensitive to noise. Transistor 55 may be shunted by a second transistor. The output of burst detector 35 may be fed to unit 15 as a colour killing signal.
Patent GB-565245-A (GB)
Title: Improved means for fixing cables, trays and pipes to structural members
IPC: F16L3/24
Filed: 1943-04-30
Abstract: 565,245. Fastenings. THOMSON, W. M. April 30, 1943, No. 6820. [Class 44] [Also in Group XIV] A sheet metal clip for gripping a bulb of a girder comprises a base 10, and has legs 11, 12 which grip the sides of the girder flange. A bolt 13 extends through a hole or slot 15 in the base, or may be welded to the clip. A clip carrying a cable can be secured to the bolt, or a channel-shaped tray for a number of cables held by several clips.
Patent GB-494000-A (GB)
Title: Improvements in and relating to permanent hair waving apparatus
IPC: A45D4/12
Filed: 1938-03-05
Abstract: 494,000. Hair -- waving appliances. NOSSITER, A. S., and RIDER, E. C. March 5, 1938, No. 6922. [Class 131] An adaptor enabling a hollow tubular electric heater designed for the "root-winding" process of permanent hair-waving to be used in the "tip-winding" process comprises an aluminium T-piece having a tubular neck 2 to receive the heater and a semi-cylindrical heating shoe 1 against which the wound curler is held by spring clips 4 or by a bull-dog clip. A split resilient ring 7 is provided in an annular groove in the neck 2 to secure a good fit in the tubular heater, or the latter may be fitted with tubular liners. The neck may be solid or plugged at the top.
Patent GB-917679-A (GB)
Title: New or improved power transmission mechanism
Inventor: ASHFIELD HERBERT EDWARD
IPC: F16H3/60
Filed: 1960-02-27
Abstract: 917,679. Reverse gear. BROWN INDUSTRIES Ltd., DAVID. Feb. 3, 1961 [Feb. 27, 1960], No. 6939/60. Class 80 (2). An epicyclic reversing gear comprises a single disc clutch 12 for forward drive and a twin-discbrake 19 for reverse, associated with the input shaft 10 of a change-speed gear-box, the clutch and brake both being oil-immersed so that when they are disengaged prior to gear-changing the fluid drag on the discs causes a rapid slowing down of the shaft 10. As shown the epicyclic unit comprises stepped planets 16, 17 carried by the clutch-plate 15 and meshing with sunwheels 14, 18, respectively, integral with, and freely mounted on, shaft 10. For forward drive clutch 13 is engaged and the planets 16 17 locked solid to connect shaft 10 with a fly-, wheel 11, while for reverse the planets are released and brake 19 engaged to hold the sunwheel 18. When the gear is disengaged the brake drag torque being greater than that of the clutch effects a rapid slowing down, but not reversal, of shaft 10, thereby facilitating gear change.
Patent GB-565306-A (GB)
Title: Improvements in or relating to open hearth furnaces
IPC: F27B3/00
Filed: 1943-05-03
Abstract: 565,306. Open - - hearth furnaces. ELECTROFLO METERS CO., Ltd., and STONE, C. H. May 3, 1943, No. 6944. [Class 51 (i)] The roof of an open-hearth furnace is formed with a centrally disposed aperture 4 through which a flame is directed vertically downward on to the bath of metal, the air and fuel being supplied to the aperture by conduits 6, 5 respectively arranged above the roof and supported on girders 15 independently thereof. The flames and gases are withdrawn from the ends of the furnace through ports which may be arranged at the sides of the vertical air passage 8 and may pass to recuperators.
Patent GB-512616-A (GB)
Title: Method of operating oscillating devices for conveying or screening
IPC: B07B1/42
Filed: 1938-03-07
Abstract: 512,616. Jigging conveyers. I. G. FARBENINDUSTRIE AKT.-GES. March 7, 1938, No. 7070. Convention date, March 6, 1937. Drawings to Specification. [Class 78 (i)] [Also in Group II] In oscillating screens or oscillating conveyers having an inclined surface and a circular oscillating motion in a vertical plane, the amplitude of oscillation A and the frequency f thereof are selected so as to comply with the formula where g is the gravitational constant, and B the angle of inclination of the conveyer surface to the horizontal, A being expressed in metres and f in oscillations per second. In the case of a conveyer having a fixed inclination the best or a required velocity v is given by the formula g v x f x cos B = -, which determines the value 2 # of f to be employed in the first formula. In the case of a screen the entity v f is replaced by Wf<2>, where W is the width of the mesh, or the throw, in metres, of a particle. These formulae are illustrated by a graph. Specification 489,968, [Group II], is referred to.
Patent GB-626755-A (GB)
Title: Improvements in or relating to banding machine
IPC: B65B13/02
Filed: 1947-03-14
Abstract: 626,755. Feeding webs. KARTRIDGPAK MACHINE CO. March 14, 1947, No. 7141. Convention date, May 8, 1944. [Class 100 (i)] [Also in Groups XVII and XXX] In a machine for wrapping sausages between an upper and a lower tape, and adhesively securing the tape between the sausages to form a package of several sausages (see Group XVII), the upper tape 48 is drawn off from a supply reel at pre-determined intervals. The tape 48 passes through loops 118 on a guide plate 49 which is pivotally mounted at 116 and is given a periodical outward swinging movement to draw the tape 48 off from its supply reel 44, by the connection through linkage 115, 114 with a cam-actuated link 98 of the main wrapping mechanism. A tensioning device for the upper tape 48 comprises a roller 119 carried in a housing 121 and spring-urged against the tape. The lower tape 51 is fed from a reel (not shown) over a guide 52, 53 and its tension is maintained by an arm 54 loaded by a spring 55.
Patent GB-609168-A (GB)
Title: Improvements in or relating to wrenches, screw-drivers and the like
IPC: B25B15/06
Filed: 1946-03-07
Abstract: 609,168. Wrenches &c. ATHERTON, H. March 7, 1946, No. 7214. [Class 61 (iii)] An impact wrench, screwdriver, &c. of the kind comprising a flywheel, so arranged that when moved along the screwdriver shaft it is caused to rotate and deliver a rotary blow on the tool head at the end of its travel has a free-wheel device interposed between the parts effecting rotation of the flywheel so that a succession of blows can be imparted without the flywheel having to rotate in the opposite direction on each return stroke. The flywheel 3 is rigidly fixed on the rear end of a tubular stem 1 fitted at the forward end with a sleeve 22 enclosing a pair of opposite nuts engaging opposite helical grooves 15 in the screwdriver &c. shaft 14, the opposite nuts each carrying pinions co-operating with pawls either of which may be brought into driving engagement with its pinion by a slide 21 so that forward movement of the stem 1 causes the latter with the flywheel 3 to rotate in one or other direction and finally deliver a rotary blow on the tool head 31 by the engagement of a toothed sleeve 25 on the tubular stem 1 with teeth 35 on the tool head. The tubular stem is actuated by a handle 5 rotatably mounted on its end which handle carries a sliding catch 9 adapted to be engaged in a notch 10 in the flywheel when the tool becomes an Archimedean screwdriver; or, by rotating a cam ring 28 to press a number of balls into a peripheral groove in the shaft 14 the latter becomes locked and the tool is usable as an ordinary screwdriver.
Patent GB-120342-A (GB)
Title: A New or Improved Crutch for Invalids and the like.
Inventor: BRADFORD BERNARD MCAULEY
IPC: A61H3/02
Filed: 1918-04-30
Abstract: 120,342. Bradford, B. M. April 30, 1918. Ferrules or tips.-The lower end of an invalid's crutch is formed with a guide to receive a block carrying a spur which may be extended for use on slippery ground or retracted when nut required by means actuated by the handle of the crutch. The side-bars 1, 2 of the crutch are provided with guides 12 for rods 13 that are connected to a block 15, Fig. 6, guided in the lower ends of the side members and carrying the spur 11. which extends through a rubber cap 8. The upper ends of the reds are formed as racks, which engage pinions carried upon the spindle of the crutch-handle.
Patent GB-837325-A (GB)
Title: Sewing machine looper mechanism
IPC: D05B1/04
Filed: 1957-03-05
Abstract: 837,325. Sewing machines. AMERICAN MACHINE & FOUNDRY CO. March 5, 1957 [May 7, 1956], No. 7232/57. Class 112 A running stitch machine having opposed needle bars between which a threaded needle is projected through the work to be sewn, and a thread puller to pull the loose end of the thread through the work, has operating means for the puller including a shaft carrying the puller and a cam for effecting either the rotational or a transverse movement of the 'shaft and the puller. In the machine shown in Fig. 1 the puller comprises a thread engaging head 72 mounted on an arm 70 which is rotated through gearing by the needle bar drive to make two revolutions every cycle, so as to permit the pulling through of a longer length of thread. A follower 104 on a shifting lever 98 engages a grooved cam 106 on a shaft 86 to move axially the shaft 76, on which the arm 70 is mounted, every alternate revolution in order that the head 72 will clear the needle mechanism at the midcycle position. In a second embodiment, Figs. 3, 4 and 6, the head makes one revolution for each needle cycle but is speeded up during the first part of its revolution so as to pull through the longer thread. The arm 70 is mounted on a shaft 120 to which is fixed an arm 124 the free end of which is connected by a link 126 to one end of a second link 130. The other end of the second link is connected by a stud 132 to a crank 134 loosely carried on the shaft 120. A roller 142 on the stud engages a radial track 144 on the driving wheel 92, while a second roller 136 mounted on the second link, between its ends. engages a stationary track 138. As the wheel 92 rotates, driven by the needle bar drive at uniform speed, the shaft 120 rotates rapidly through approximately 180 degrees and then rotates at a reduced rate through the remainder of the revolution. Specification 543,805 and U.S.A. Specification 2,386,800 are referred to.
Patent GB-1142674-A (GB)
Title: Improvements in and relating to insulated gate field effect transistors
Inventor: BEALE JULIAN ROBERT ANTHONY
IPC: H01L23/29
Filed: 1966-02-18
Abstract: 1,142,674. Semi-conductor devices. MULLARD Ltd. 18 Feb., 1966, No. 7254/66. Heading H1K. An insulated gate FET comprises a body of one conductivity type having interdigitated source and drain regions defining a meandering channel, the source and drain regions each having a low resistivity base portion from which the fingers extend, and the gate being disposed over, and insulated from, the fingers of the source and drain regions and the channel. As shown, Fig. 2, the device comprises source and drain regions 13, 15 defining a meandering channel 17, and having heavily doped contact regions 11, 12 and interlocking fingers 14, 16. The gate electrode 18 extends across the fingers 14, 16 and defines the active sections of the channel. The device operates in the enhancement mode but can be converted into a depletion-mode device by providing a surface conduction channel region between the source and drain regions. The device may be produced in a wafer of P-type silicon by oxidizing, photomasking and etching with ammonium fluoride and hydrofluoric acid, diffusing-in phosphorus to form N<SP>+</SP> source and drain contact regions, exposing the required source, drain and channel regions, masking the meandering channel region using an electron beam to decompose an atmosphere of oxygen containing tetraethoxysilane, heating in wet argon, diffusing-in arsenic to form source and drain regions, removing the meandering channel mask, oxidizing the whole surface, opening windows for the contacts, and depositing aluminium to form the source and drain contacts and the gate region. The device may be mounted on a header and encapsulated. An N-type surface channel region for the depletionmode devices may be produced by a donor diffusion before forming the channel mask. Alternatively this region may be formed as an inversion layer during application of the gate insulation. Other active and passive devices may be provided in the substrate. The use of the transistor in a tuned amplifier is also described, Fig. 5 (not shown).
Patent GB-1375284-A (GB)
IPC: H04N11/18
Filed: 1972-02-17
Abstract: 1375284 Gain control; colour television INTERNATIONAL STANDARD ELECTRIC CORP 17 Feb 1972 [23 Feb 1971] 7318/72 Headings H4R and H4F A TV colour saturation controlling amplifiee incorporates a PIN diode in its negative feedback whereby variation of a D.C. control signal applied to the amplifier is effective to vary thr r.f. resistance of the diode and thus the gain of the amplifier. In a SECAM colour TV receiver (Figs. 1, 2, not shown) such an amplifier is included between the limiter and the demodulator in each of the R-Y and B-Y channels following the SECAM switch so as to serve as a colour saturation regulator (colour contrast control). In a PAL receiver the amplifier is incorporated in the colour channel preceding the direct and delayed channels. In the Fig. 7 embodiment a grounded emitter transistor T1 is provided with a negative feedback path consisting of a resistor R4 in shunt with a capacitor C3 and a PIN diode. A resistor R5 and a capacitor C5 serve to decouple A.C. components from a D.C. control voltage source. +Ust. The relationships between diode resistance and (a) control voltage and (b) amplifier output voltage are both non-linear (Figs. 4 and 5, not shown) but since they are substantially complementary the output voltage/control voltage characteristic is linear (Fig. 6, not shown). In order to ensure a linear frequency response of the amplifier this is followed by another grounded emitter transistor T2 having a frequency correcting circuit R9, C4 in its feedback path. The output voltage/frequency characteristic at various values P of the D.C. control voltage are depicted in the figure.
Patent GB-314847-A (GB)
Title: Improved means for preventing unauthorised use of motor vehicles
IPC: B60R25/04
Filed: 1928-04-02
Abstract: 314,847. Dehn, F. B., (Hershey Manufacturing Co.). April 2, 1928. Divided on 314,830. Guarding against unauthorized use.-A steering lock has two controls, one a sliding bolt and the other an ignition switch movable independently. A lock casing A is secured to the dash-board E by a bolt 18 and to the steering column B and dash-board by bolt 17. The barrel 30 of the lock protrudes through the dash-board while the handles 21 of a switch for interrupting the ignition circuit is located behind it. When the key is turned an eccentric 35 on the barrel 30 forces' a plunger 20 to the left so that a bolt 22 passes through the column B into a collar D secured to steering shaft C and locks the latter. The switch comprises a slide 41 carrying a bridge 42. A pin 47 is secured to the slide and passes into an. inclined groove in the plunger 20: When the plunger is moved into the locking position shown the slide is moved with it and the circuit 45, 46 is broken. By turning the plunger,by means of the handle, 21 without operating the lock the circuit may be broken and the steering left free.. Specification 314,830 is referred to.
Patent GB-638400-A (GB)
Title: Improvements in trucks for use in handling barrels and the like
IPC: B62B1/26
Filed: 1948-03-11
Abstract: 638,400. Hand trucks. MARTIN, L. March 11, 1948, No. 7487. [Class 108 (i)] A truck for handling and up-ending drums &c. comprises a wheeled axle to which is secured the handle 11, a pair of spaced arms 13 mounted on the axle and extending substantially at right-angles to the handle 11, and extension pieces 14 having a limited pivotal movement with respect to the arms 13. In use the truck is wheeled up to the end of the drum until the member 18 contacts the drum. The handle 11 is then swung backwards so that the inwardly projecting parts 16 engage the drum, thus tilting it until the inwardly projecting parts 17 on the extensions 14 engage the drum, thus reducing the leverage.
Patent GB-323424-A (GB)
Title: Improvements relating to electron discharge tubes or thermionic valves
IPC: H01J19/82
Filed: 1929-03-07
Abstract: 323,424. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Dec. 4, 1928, [Convention date]. Vacuum tubes. - A resistance and a condenser are mounted in the foot of a discharge tube and con. nected in parallel between an equipotential cathode and its external contact member, in order that a bias voltage may be imposed on the control grid without the use of a battery. The invention may be applied to a valve for high-frequency amplification, Fig. 1 (not shown). A condenser C, Fig. 2, may have its electrodes wound on a glass cylinder which is adapted to slide into a cylindrical foot 2 and over an exhausting tube 4 of a discharge tube which has a screening grid G<2>, a cathode K, cathode heater F, and a control grid G'. The anode may consist of two plates disposed in front of and to the rear of the screening grid and connected to a lead 6. A resistance R may be mounted in the annular space between the condenser and the glass wall.
Patent GB-526124-A (GB)
Title: Improvements relating to plate heat exchangers
IPC: F28F3/08
Filed: 1939-03-08
Abstract: 526,124. Plate heat - exchangers. OWEN POWER PLANT, Ltd., and SUTTON, B. W. March 8, 1939, No. 7555. [Class 64 (iii)] Plain or corrugated plates 7, Figs. 1, 2, assembled to form. alternate horizontal and vertical passages for furnace gases and air or other fluids are secured together by angle irons 15 welded along their ends and are held in a casing 19 by fluid tight joints allowing longitudinal movement of the plates. The joints are formed by packing material 20 squeezed by screws 22 between the angle irons 15 and channel irons 18 on the casing. Fluid tight joints between the ends of the outer plates and the sides 27 of the casing are formed by packing 28, which is pressed between the ends of the plates and the sides by vertical strips 29 projecting inwardly from the ends of the casing. Bars 33, Fig. 7, between the angle irons 15 of upper and lower tiers of elements form runways for the upper tier. A tight joint between the tiers is formed by packing 34 pressed between the bars 33 and channel strips 35 by clamps 37.
Patent GB-127840-A (GB)
Title: Improvements in or relating to Cartridge-belts.
Inventor: DIBOVSKY VICTOR VLADIMIROVITCH
IPC: F42B39/08
Filed: 1917-05-25
Abstract: 127,840. Dibovsky, V. V. May 25, 1917. Cartridge belts. - Relates to metal link belts in which the cartridges themselves form hinge - pins between links of stamped metal plate, and consists in providing a completely closed form of link, the curved portions at opposite ends which embrace the cartridges being joined by portions of the plate which lie parallel lengthways of the link. The links, as shown in Fig. 3, are constructed by bending a sheet-metal stamping of the form shown in Fig. 4. The parts 1, 1, 2, 2 are bent round in opposite directions, and the tongues 1<a> fitted into the slots 6 and bent over. The links are hinged together through the medium of the cartridges themselves, the portion 9 of the plate being bent into a conical form to grip the bullet and limit the distance the cartridge can be pushed into the belt. The parts 10. 10, 11, 11 are, if desired, bent as shown in Fig. 3 to give further support to the cartridge. Either or both of the portions 1<0>, 5 of the plate may be bent inwards, as shown in Fig. 6, to facilitate folding the belt.
Patent GB-455045-A (GB)
Title: Improvements in or relating to the manufacture of heels for shoes and the like
IPC: A43B21/36
Filed: 1935-03-11
Abstract: 455,045. Heels for footwear. RAMSDEN, J., 6, Grant Street, North Fitzroy, and WAYMAN, R. C., 19, Kenilworth Parade, Ivanhoe, both in Victoria, Australia. March 11, 1935, No. 7591. [Class 17 (ii)] Heels, more especially Louis heels, are reinforced by a metal member closely fitting in an open - ended hole of corresponding crosssection extending from top to bottom of the heel and having its ends bell-mouthed, to prevent separation of the heel parts in the event of a fracture of the heel. The metal member 2 may, as shown, be tubular throughout, or it may be solid in the middle with tubular ends. The top lift 7 may be nailed to the heel, and a plug may be provided in the lower end of the member 2 to aid in holding the top lift in position. Both ends of the member 2 may be bell-mouthed after it has been placed in position so as to form a flush seating in the surfaces of the heel where such is of relatively soft material, such as wood, or, where the heel is of harder material such as a plastic moulding, shaped seatings for the expanded ends of the member 2 may be provided. Alternatively, the reinforcing member formed with bell-mouthed ends may be positioned in a mould, before the plastic mass from which the heel is to be made, is introduced. The heel may, as shown, be provided with transverse open-ended passages 18 in alignment with holes 19 in the member 2 so as to establish ventilating communication through the member 2 and passages 20 adjacent its upper end, with the interior of the shoe. Those passages assist also in drying the adhesive which secures the outer covering 23 to the heel body.
Patent GB-412155-A (GB)
Title: Improvements in shoe stretchers
IPC: A43D3/14
Filed: 1934-03-12
Abstract: 412,155. Shoe &c. stretchers. KENNEDY, E. N., 170, Piccadilly, London. March 12, 1934, No. 7756. [Class 17 (iii).] A device for stretching or straightening shoe soles when the shoe is not in use comprises a frame with projections adapted to engage the welt of the shoe on either side and at the toe, and means longitudinally slidable or pivoted thereon to vary the pressure or tension thereof on the shoe sole. As shown, the device comprises a frame a of U -shape, bent to form hook-shaped projections d, c to engage the shoe welt. The frame a or a complementary part e adapted to slide along or pivot on the frame a, or both parts are shaped so as to bring the arms b of the frame a towards one another and to adjust the pressure of the frame on the sole k by wedge or cam action.