Patents Assigned to W. C. Dillon and Co. Inc.
  • Tensiometer capable of being attached to a cable under tension
    Patent number: 4241616
    Abstract: The tensiometer is designed to measure the tension in cables from extremely heavy loads as might occur in large cranes and in oil well rigs. The tensiometer utilizes a pair of spaced tandem pulleys bearing against spaced points on the cable and a central pulley engaging an opposite point intermediate the spaced points so as to force the cable laterally. The tension in the cable tends to straighten the cable and thus exert a load on the central pulley and by measuring this load, a force is developed constituting a function of tension in the cable. The central pulley is removably mounted from the frame structure on an arm. One end of this arm is thus arranged to be pivoted to the frame structure after the cable has been received against the first and second pulleys.
    Type: Grant
    Filed: September 11, 1979
    Date of Patent: December 30, 1980
    Assignee: W. C. Dillon & Co., Inc.
    Inventor: Max V. Mastrigt
  • Tension indicating device
    Patent number: 4163126
    Abstract: The device includes a rigid frame supporting tandem pulleys for engaging spaced points on a rope or cable in which a predetermined tension when reached is to be indicated. The center of the rope between the pulleys is laterally displaced from a tangent line between the spaced points on the pulleys and secured to a bending beam so that when tension is applied to the rope the secured center portion will tend to move into alignment with the engagement points on the pulley thereby deflecting the beam. A microswitch secured to the frame is arranged to be engaged when the beam has been deflected a predetermined amount thereby indicating when a predetermined tension has been reached.
    Type: Grant
    Filed: March 9, 1978
    Date of Patent: July 31, 1979
    Assignee: W. C. Dillon and Co. Inc.
    Inventor: Max Van Mastrigt
  • Extensometer for tensile tester
    Patent number: 3974686
    Abstract: The extensometer has first and second gripping portions on spaced members designed to be applied to a specimen by using only one hand. Changes in the length of the specimen are indicated by an electrical signal derived from a flexure strain gage arrangement in one of the members against which a probe is urged by forces on the other member. The coupling of the probe to the other member is through a spring biasing arrangement such that the biasing force can be changed so that the strain gage flexure movements can be made constant for different percentage elongations to be measured.
    Type: Grant
    Filed: October 1, 1975
    Date of Patent: August 17, 1976
    Assignee: W. C. Dillon & Co., Inc.
    Inventor: Max Van Mastrigt