Abstract: A load sensing probe for disposition in a cavity in a back-up member arranged to support a tool at a working station for measuring the strain associated with such working forces applied to the tool comprises a generally cylindrical body member having first and second generally end adjacent regions of substantially equal outside diameter and a third intermediate region of reduced size. A centrally disposed bore extends through the cylindrical member. A first pair of slots extend axially inwardly into the intermediate region and a second pair of slots extend from the second region into the intermediate region and are disposed at a right angle to first pair of slots. A threaded rod having a frusto-conical surface extends through the centrally disposed bore and includes a threaded fastener. This assembly may be utilized to apply outwardly directed forces to the body of the probe to retain it within the cavity of the tool.

Abstract: A tie rod load sensor for a die-casting or other machine includes an axially-extending bore formed in the tie rod to receive a strain gauged sensing member. One end of the sensing member is countersunk to receive a ball which concentrates the load when it is forced against the bottom of the bore by a bolt threaded into the opening of the bore. The sensing member includes a narrow central shaft portion upon which a plurality of strain gauges are mounted. The bolt is utilized to pre-load the sensing member such that the strain gauges mounted thereon will measure changes in the tension on the tie rod.

Abstract: A load sensing probe for monitoring working forces in compressive elements such as found in presses and other machine tools is disclosed. The probe has an elongate configuration which allows it to be mounted at a point remote from its load sensing end and enables it to be conveniently used with a plurality of similar probes in relatively confined spaces. A split plug includes a slot defining two sensing arms, which arms are pushed outwardly into engagement with an accommodating cavity formed in a back-up member of the machine tool. The probe is sensitive to relative closing movement of the cavity caused by compressive strain in the back-up member.

Abstract: A method and apparatus for detecting the length of wire blanks in a wire cutting machine is disclosed, the machine including feed apparatus for feeding wire stock into the cutting machine, stop apparatus for engaging one end of the wire stock at a predetermined length in the cutting machine, and cutting apparatus for cutting wire blanks from the wire stock. When the leading end of the wire stock engages the stop apparatus with a predetermined pressure, the blank is at a proper length to be cut. The pressure causes the stop apparatus to expand radially. Strain gauges mounted about the stop apparatus detect the expansion by generating an electrical signal when connected in a bridge circuit. The strain gauges detect an over feed situation when the stop apparatus expands beyond a predetermined point. Similarly, an under feed situation is detected when little or no expansion of the stop apparatus is sensed.

Abstract: An apparatus for indicating a quantity of electrical information in decimal notation. An input signal having a voltage level proportional to the quantity to be indicated is compared with a plurality of decimally related reference voltage levels to generate a separate decade enable signal for each reference voltage level which is equal to or less than the input signal voltage level. The input signal and the decade enable signals are utilized to generate a units signal having a voltage level proportional to the difference between the input signal voltage level and the voltage level of the largest reference voltage for which a decade enable signal has been generated. The units signal voltage level is compared with the reference voltage levels to generate a separate units enable signal for each of the reference voltage levels which are equal to or less than the units signal voltage level.