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    • 4. 发明专利
    • Improvements in and relating to the decoration of ceramic or other ware
    • GB803485A
    • 1958-10-29
    • GB3534955
    • 1955-12-09
    • MALKIN AND COMPANY LTD FMAURICE WHISTON ABBERLYSAMUEL THOMAS PARKERARTHUR GODFREY ELLIS
    • B28B11/00
    • 803,485. Printing-machines. MALKIN & CO., Ltd., F., ABBERLEY, M. W. PARKER, S. T., and ELLIS, A. G. Dec. 7, 1956 [Dec. 9, 1955], No. 35349/55. Addition to 746,070. Class 100(2) Printing on curved surfaces; inking apparatus. An apparatus for decorating ware comprises a flexible endless band coated with liquid decorating medium and arranged to travel between a pad bearing the design to be imparted and a member which supports the band when the pad is moved into contact with the band, the supporting member being arranged to leave the central part of the surface of the band with which the pad engages free to yield to the pad pressure so that when the pad is moved into contact with the band the latter adapts itself to the contour of the pad. The band 13, Figs. 1 and 2, is driven and supplied with colour as described in Specification 746,070, in passes over a plate or collar 35 having a hole 35a. When the pad 39 is depressed, as described in the parent Specification, the band yields and conforms to the contour of the pad to supply colour evenly to the latter. The pad is then swung to decorating position over a plate or the like. Each plate is carried on a support 66 at the end of an arm 65 of a rotary carrier. According to the Provisional Specification hole 35a may be omitted.
    • 5. 发明专利
    • Improvements in or relating to time delay circuits
    • GB614472A
    • 1948-12-16
    • GB510046
    • 1946-02-19
    • AUTOMATIC TELEPHONE & ELECTJOHN ERNEST THOMAS PARKER
    • H03K17/288
    • 614,472. Valve relay circuits. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and PARKER, J. E. T. Feb. 19, 1946, No. 5100. [Class 40 (vi)] In a time delay circuit, a switching operation connects a charged condenser in the grid cathode circuit of a cold cathode discharge tube, and provides means for discharging and recharging the condenser in the opposite sense through a parallel connected resistance, such that the striking voltage of the tube is reached after a time delay. In the Figure, a potentiometer YJ, YK, YL, YM and YN is connected across the H.T. supply. Condenser C7 is charged through contacts DS1 and DS2, the upper plate being negative. Contacts DS1 and DS2 are controlled by relay DS (not shown) which is operated by the external switching operation. Contact DS1 connects the upper plate of the condenser to the control grid of cold cathode discharge tube NA, and contact DS2 disconnects the lower plate from the positive supply, which is then applied to the anode of tube NA. Condenser C7 now commences to discharge and then charge in the opposite direction, through the high resistance YP, YQ, YR; YS which is connected to a point on the potentiometer. After a time delay, the voltage on the upper plate of condenser C7 is sufficient to cause tube NA to conduct, and relay AL, which may control an alarm circuit, then operates. The effective value of resistance YP-YS may be adjusted by means of tapping 18, to provide a choice of delay periods, and fine adjustment, to cater, for example, for different cold cathode tubes, may be effected by means of the tapping 24 on the potentiometer. Element ARA which is a non-linear resistance material such as that known as " Atmite" '' (Registered Trade Mark), is provided to maintain the delay interval substantially constant in spite of changes in supply voltage. The resistance of ARA falls as the current through it increases, so that the proportional change in voltage across resistance YJ for any change in supply voltage is increased. The proportional change in the initial charge given to condenser C7 is therefore also increased. This results in a stabilization of the delay period. Specification 609,120, [Group XXXIX], is referred to.
    • 6. 发明专利
    • Improvements in or relating to electrical signalling systems
    • GB609120A
    • 1948-09-27
    • GB696146
    • 1946-03-06
    • AUTOMATIC TELEPHONE & ELECTTESEO BRUNO DANTE TERRONIJOHN ERNEST THOMAS PARKER
    • H04B3/04
    • 609,120. Transmission systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., TERRONI, T. B. D., and PARKER, J. E. T. March 6, 1946, No. 6961. [Class 40 (iv)] In a modulated carrier current signalling system having automatic gain control which operates in response to changes in attenuation in the transmission circuit, the gain control makes a correction up to a predetermined maximum which is less than the maximum possible correction and at which point an alarm may be given. The pilot frequency is selected in tuned circuits L1, C1, L2, C2, amplified in valve VA and rectified by MRA. The circuit is so set that if the level is normal no effect is produced, but, if it is at least ¢ db. up or down, relay SL operates in the appropriate direction. If it is incorrect by 4 db. or more, relay SP is operated. Thus, if the level is ¢ db. or more too low, SL1(L) closes and operates IG in series with PCDM. IG3 operates delay relay DS whose contacts DS1, DS2 reverse the charge on condenser C7 which charges through VR2 until gas-filled valve NA fires and operates PA. Thereupon, in sequence, SC operates and locks and releases DS, PA releases and operates A, A operates B and energizes stepping magnet PCIM, B short-circuits A which in turn shortcircuits B. The switch PC cuts in predetermined pads at each step and stepping continues with repeated operation of A and B until the level is restored to normal, whereupon SL releases IG followed by SC. If the change in level is in the opposite sense, SL1(H) closes and operates DS directly. The operations otherwise are the same as the foregoing except that with IG normal the stepping circuit includes the " decrease " magnet PCDM instead of PCIM. If the correction required is 4 db. or more, relay SP operates in the appropriate direction, but the resulting functions depend on the setting of a manual switch AS. In position 1, any large change in level operating SP immediately operates alarm relay LA. This energizes AD followed by DS to restart the delay circuit and at the end of the predetermined time PA operates and gives an alarm on lead 15. In position 2, SC is operated by PA after the initial delay period and AD then restarts the timing circuit, but with VR3 in the charging circuit in place of VR2. PA cannot thus reoperate to give an alarm until after the PC switch has had time to make eight steps, i.e. a change of 4 db., unless the level has already been restored to normal. In position 3 of AS, both relays SP and SL operate on a change of Œ 4db. and at the end of the initial delay period PA operates SC to release DS and reset the delay circuit. The appropriate PC switch steps under control of VR3 which may allow six steps, i.e. a 3 db. correction. If relay SP is still operated, indicating that the level is still more than 4 db. from normal, AD operates and an alarm is given, the stepping circuit being interrupted by PAI. If the level is, however, now less than 4 db. from normal, the contacts of SP1 are open, AD and DS are released and the PC switch steps under control of the ¢ db. relay SL until the necessary correction is made. Position 4 of AS allows PC to step under control of VR3, which may allow up to eight steps. If the necessary correction is reached within this limit, stepping ceases, but otherwise an alarm is given when the eighth step is reached. In each of the four settings of the switch AS the removal of the link DAL renders the special facilities given above effective only in the " decrease gain " direction and stepping progresses normally in the opposite direction until the permissible maximum position is reached, when an alarm is given. The automatic operation of the equipment can be put out of use by cut-off key KAGCO which interrupts the circuits to relay contacts SP1, SL1 and lights indicator lamp AGCOL. In this condition the switch PC can be operated step-by-step by manual keys KSU, KSD. Valve failure is indicated by the release of AA which lights lamp AAL and cuts off positive battery from the control relays. A test key KAGCT inserts a predetermined pad in the line to test the response of the equipment.
    • 9. 发明专利
    • Improvements in or relating to hinge assemblies for the buckets of dredger chains
    • GB537969A
    • 1941-07-15
    • GB80740
    • 1940-01-15
    • THOMAS PARKER
    • E02F3/12
    • 537,969. Bucket-chain dredgers; hinges. PARKER, T. Jan. 13, 1940, Neo. 807. [Class 68 (i) ] In a dredger bucket-chain in which one bucket has a pair of spaced eyes between which fits an eye on the adjacent bucket, a hinge pin extending through all the eyes, during hinging movements there is relative rotation between the pin and the spaced eyes, and none between the pin and the other eye. Further, means are provided to prevent entry of water and grit, and loss of lubricant, in the bearings in the spaced eyes. In Figs. 1 and 2, the pin 4 fits preferably within a bush 3 in the eye 1, and is held against rotation therein by friction, which may be increased by serrations, or by a serrated block pressed against the pin, or by bolts, wedges, keys or the like ; the reduced ends of the pin fit Within bushings 5 held in the outer eyes 2 by similar means or by radial tongues 8 and bolts 9 threaded to the eyes or to blocks welded thereto. The bushings 5 may have detachable half or whole liners or ball or roller bearings. The closed ends of the bushings 5 have tapped holes 10 to facilitate removal, and nipples 11 and non-return valves for insertion of lubricant. At the inner ends of the bushings 5 are solid or hollow rubber &c. sealing rings 12 which may bear frictionally against metal &c. rings 13 which may have grooves for passage of lubricant, and may be of angle section to extend within the rings 12. The bushings 5 may be recessed to enclose the rings 12. In Fig. 9, the pin 4 is recessed to receive the ring 12, oil ducts 16 being provided.