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    Machine for bending concrete-reinforcing bars
    51.
    发明授权
    Machine for bending concrete-reinforcing bars 失效
    用于弯曲混凝土钢筋的机器

    公开(公告)号：US3777525A

    公开(公告)日：1973-12-11

    申请号：US3777525D

    申请日：1971-08-30

    Applicant: PEDDINGHAUS CARL ULLRICH DR

    Inventor： PEDDINGHAUS C

    IPC: B21D7/12 ,  B21J7/26

    CPC classification number: B21D7/12 ,  Y10S72/702

    Abstract: A machine for bending concrete-reinforcing bars and the like is provided with automatic electric sequence control means for performing a desired sequence of bending operations of selected predetermined bending angles. The machine has slip rings of angular extents corresponding to the selectable angles and a contact drum cooperating with these. On the drum are a series of sets of pairs of selectable contacts; each set corresponds to one bending operation and the selected contact pair in the set cooperates with a corresponding slip ring to determine the bending angle for that operation. The drum is stepwise rotated to effect the sequence of operations. To compensate for elastic relaxation of the bar after bending, the bending may be continued beyond the predetermined angle by a further angle determined by measurement of energy absorption, or current consumption, or a time interval, for bending in the elastic range of the bar material. Means for effecting such compensation automatically are described.

    Abstract translation: 用于弯曲混凝土钢筋等的机器设置有用于执行所选择的预定弯曲角度的期望顺序的弯曲操作的自动电动顺序控制装置。 机器具有对应于可选角度的角度范围的滑环和与这些角度协作的接触鼓。 在鼓上是一系列可选择的接触对; 每个组对应于一个弯曲操作，并且该组中所选择的接触对与相应的滑环协作以确定该操作的弯曲角度。 滚筒逐步旋转以实现操作顺序。 为了补偿弯曲之后的棒的弹性松弛，弯曲可以通过测量能量吸收或电流消耗或时间间隔确定的另一角度继续超过预定角度，用于在棒材的弹性范围内弯曲 。 自动进行这种补偿的手段被描述。

    Bumper repair tools and process of manufacture
    52.
    发明授权
    Bumper repair tools and process of manufacture 失效
    保险丝修理工具及其制造工艺

    公开(公告)号：US3753368A

    公开(公告)日：1973-08-21

    申请号：US3753368D

    申请日：1971-06-11

    Applicant: LANG I

    Inventor： LANG I

    IPC: B21D37/20 ,  B21D37/14

    CPC classification number: B21D37/20 ,  Y10S72/702 ,  Y10S72/705

    Abstract: This application discloses a mold for making die sets for bumper repair, a method of making the mold, and a method of making the dies. The mold is made from an undamaged bumper section to which extensions are added to make an enclosure suitable for simultaneously casting both of the male and female die members. The welding and a subsequent step of heat treating is accomplished in such a way that the longitudinal curvature is greater than that of the original bumper so that the resulting die set tends to overbend bumpers being repaired. The mold is placed in a flask with side walls and liquid casting metal is introduced inside and outside of the mold, filling the inside and substantially enclosing the outside. After hardening, the flask and mold are removed, leaving a matching, fully congruent die set. The working (pressing) surfaces of the die thus obtained correspond exactly to each other and are true copies of the faultless original bumper segment, except for the added curvature.

    Abstract translation: 本申请公开了一种用于制造用于保险杠修复的模具的模具，制造模具的方法以及制造模具的方法。 模具由未损坏的保险杠部分制成，延伸部被加入到该保险杠部分中，以形成适于同时铸造两个模具和阴模的两个外壳的外壳。 焊接和随后的热处理步骤以使得纵向曲率大于原始保险杠的弯曲度的方式实现，使得所得到的模具倾向于过弯弯曲保险杠被修理。

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