Abstract: An attachment for the horsehead of an oil well pump jack or pumping unit including a pair of strap assemblies oriented in spaced, generally parallel relation to each other with each strap assembly including two components hingedly connected to each other with each strap component including means adjustably securing it to the opposite sides of the horsehead with such means also enabling detachable connection between either of the strap components and the horsehead so that the attachment may be used for various purposes during repair, maintenance and the like and also serve as a retaining device for the wire line assembly which extends from the wire line hanger at the upper corner of the horsehead to the polished rod.

Abstract: A chemical treating system for oil wells in the form of a chemical injector and well manifold for protecting down hole oil well equipment from corrosion by injecting a predetermined quantity of chemical additive into a circulating fluid. The equipment includes a supply tank or reservoir supported in elevated position above a calibrated measuring container which discharges into a mixing vessel communicated with pipes connected with the tubing and casing respectively of an oil well with valving arrangements being provided to enable the chemical additive to be injected into a circulating fluid and circulated through the tubing and casing and any down hole equipment associated therewith for a desired period of time.