HARDNESS TESTING
    11.
    发明专利

    公开(公告)号:GB1358131A

    公开(公告)日:1974-06-26

    申请号:GB4699572

    申请日:1972-10-11

    Applicant: SCHMIDT E

    Abstract: 1358131 Hardness testing E SCHMIDT 11 Oct 1972 [15 Oct 1971] 46995/72 Headings G1N and G1S The hardness of a specimen is tested by measuring the length of time for which a striking probe remains in contact with the specimen before rebounding from it. In Fig. 1 a metal specimen 2 is tested by striking it with a conductive hammer 1; while there is electrical contact between the hammer and the specimen capacitor 17 is charged, so that the resulting potential on the capacitor is a measure of the contact time and hence of the hardness. The contact time is largely independant of the hammer head velocity on striking the specimen. In the Fig. 2 embodiment the striking probe 10 is normally insulated from hammer 7; when specimen 20, which need not be conductive, is struck an insulating ring 11 is compressed so that probe 10 contacts hammer 7 and capacitor 17 commences charging. When the probe and hammer rebound from the specimen the contact is broken as the ring 11 expands and the timing ceases. Because the mass of probe 10 is small compared with that of the hammer the time measured is substantially the contact time between the probe and the specimen. When the probe mass is not relatively small a different calibration is required, as for example is necessary for Fig. 3. Here probe 28 initially rests on the specimen, and is struck by spring-loaded mass 22, the latter being loaded by drawing it to the right hand end of tube 21 with trigger 30, against a spring. The probe slides in insulating bush 27. When mass 22 first strikes the probe the timing is initiated; the probe then moves ahead of the mass into the specimen, and rebounds against the mass again. The second contact between the probe and the mass terminates the timing. In another embodiment, Fig. 6 (not shown), the mass falls on to a circular plate-like probe suitable for soil testing. The probe may be driven against the specimen manually, by spring, by gravity, or by a solenoid. The time may be measured as above, or by observing the output of a strain gauge, an accelerometer or a Piezo-crystal built into the apparatus. Only the duration of the signal is relevant, its magnitude being ignored. The probe dimensions are chosen to be suitable for the material tested. In Fig. 1 a suitable time constant in the measuring circuit must also be chosen for the specimen.

    THREAD CUTTING DEVICE FOR SLIDE LATHES

    公开(公告)号:CA937789A

    公开(公告)日:1973-12-04

    申请号:CA112367

    申请日:1971-05-06

    Inventor: SCHMIDT E SCHMIDT R

    Abstract: 1349004 Cutting tool feed devices R SCHMIDT and E SCHMIDT 4 May 1971 [6 May 1970] 13082/71 Heading B3T Tool feed apparatus in a lathe comprises a tool guide and slide 1, 2 attached to the compound slide 9, 23 of the lathe, connecting means 3 formed by a stop rod 4 secured to the lathe frame 10 and connected to the tool slide 2 by way of a lever linkage and which is adapted to cause retraction and feed traverse of the cutting tool 2a with the slide 2 as a result of the traverse of the compound slide 9, 23, the top slide being set obliquely to the lathe spindle axis. In operation the lathe cross slide 23 is set to the required in feed position and the cutting traverse commenced the tool and slide 2a, 2 moving in the normal traversing motion and stop rod 3 sliding in its support 11 on the lathe frame 10 until a stop 5 or the rod 4 abuts a sleeve 12 through which the rod is sliding. The stopping of the rod 4 causes pivoting of lever link 19 which in turn pivots a further lever 6 against a spring 17 which releases a latch pawl 16 from a recess in the guide 1 to permit the tool slide 2 to move relative to the guide 1 and whereby continued movement of the compound slide 9, 23 due to the oblique orientation of the slides retracts the tool slide and tool from the workpiece. The direction of traverse of the compound slide is then reversed and the assembly 1, 2, is moved with the rod until the stop 7 or the rod 4 engages the spring 25 whereupon the latch pawl is re-engaged in its recess. The infeed is then reset and a further cutting traverse can be commenced. In the embodiments described the machining operation performed is that of screw cutting. Internal and external thread can be cut by changing the orientation of the slide 9 with respect to the spindle axis.

    13.
    发明专利
    未知

    公开(公告)号:BR6803812D0

    公开(公告)日:1973-03-20

    申请号:BR20381268

    申请日:1968-10-17

    Applicant: SCHMIDT E

    Inventor: SCHMIDT E

    PRINTING METHOD AND PRINTING DEVICE

    公开(公告)号:CA3012904C

    公开(公告)日:2022-06-28

    申请号:CA3012904

    申请日:2017-02-03

    Applicant: A SCHMIDT E K

    Inventor: SCHMIDT ANDREAS

    Abstract: The invention relates to a method and a device for printing a large surface which is situated, in particular, on a substrate which cannot be fed to a printing device. The method is distinguished by the fact that the perpendicular spacing Azo of a reference point of the device (100) at a plurality of points which are distributed over the printing web from the surface (300) to be printed is determined in each case at the points which are distributed over the printing web, and the perpendicular spacing A z of the print head (200) from the surface (300) to be printed is set in accordance with a previously recorded measured value. Here, the plurality of points can be distributed uniformly over the length of the printing web. The device (100) for carrying out the method has a measuring device (190) for contactless measurement of the spacing between a reference point of the device (100) and the surface (300) to be printed. Furthermore, the device (100) has a control unit for evaluating the measured values and producing control pulses for setting the spacing A z of the print head (200) from the surface (300) to be printed.

    Procedimiento de impresión y dispositivo de impresión

    公开(公告)号:ES2856885T3

    公开(公告)日:2021-09-28

    申请号:ES17702870

    申请日:2017-02-03

    Applicant: A SCHMIDT E K

    Inventor: SCHMIDT ANDREAS

    Abstract: Procedimiento para la impresión de una superficie grande y una particularmente situada en un sustrato que no se puede alimentar a un dispositivo de impresión, superficie (300) que se puede dividir en una dirección en bandas de impresión correspondientes a la anchura de impresión de un cabezal (200) de impresión, yendo el cabezal (200) de impresión fijado a un primer eje (120) de manera que puede moverse en la dirección vertical y a lo largo de una banda de impresión, yendo el primer eje (120) fijado a un bastidor 110 de transporte que puede moverse en la dirección horizontal x e imprimiéndose la superficie (300) mediante la impresión secuencial de las bandas de impresión verticales, determinándose la distancia Az0 ortogonal en la dirección horizontal z, que queda ortogonal respecto a la dirección horizontal x, de un punto de referencia del dispositivo (100) con respecto a la superficie (300) que se debe imprimir en varios puntos distribuidos por la banda de impresión vertical y ajustándose la distancia Az ortogonal en la dirección horizontal z del cabezal (200) de impresión respecto a la superficie (300) que se debe imprimir en los puntos distribuidos por la banda de impresión vertical en función de un valor de medición previamente establecido, caracterizado por que los valores Az0 de medición establecidos para cada una de las bandas de impresión verticales se almacenan en secuencias de medición para cada punto medido a lo largo de la banda de impresión a una determinada altura en la dirección y en un dispositivo de control y a partir de los valores de medición de al menos una secuencia de medición se determina una tendencia, desencadenándose un movimiento de desvío del bastidor (110) de transporte que se puede mover en la dirección horizontal cuando la tendencia supera un umbral previamente definido.

    20.
    发明专利
    未知

    公开(公告)号:DE7242474U

    公开(公告)日:1973-04-19

    申请号:DE7242474

    申请日:1972-11-18

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