the workhorse of the industry. The PBS family includes models made by Schmid & Company (sometimes branded as BowlOMatic) as well as the CA-1. These machines are straight electrical and do not require air compressors unlike pneumatic machines. The Schmid machines ran using relays while the CA-1 used circuit boards. The PBS brand was bought out by Brunswick, who introduced a second generation Schmid pinsetter dubbed the 81-5 as well as a 10-pin string pinsetter and a convertible five-ten pin machine marketed as the Chamelion.[7] The Mendes family of string pinsetters is not as common as the PBS family. Mendes machines are easily spotted for its shield that descends on a hinge like a closing door. The machine may immediately start up if all the pins are knocked down. The early Mendes string pinsetters were pneumatic. They released an electrical version of the machine known as the ME90. Mendes was bought out by Qubica—now QubicaAMF Worldwide. The machine is now marketed by QubicaAMF under the TMS name [8] These machines are available for five and ten pin, but there is no convertible version. Paule Computer Systems marketed a third family of pinsetter as the Merlin, a convertible five/ten pin string pinsetter that uses 15 strings.[9] The PBS version uses 12 strings—a changeover requires the headpin and the two corners to be restrung. Duckpin pinsetters Duckpin bowling is played in two varieties: Regular duckpin bowling, popular in the northeastern and mid-Atlantic United States. A popular pinspotter in this sport is the Sherman model, named after its inventor, Ken Sherman, which was produced from 1953-1973. It has continuously moving conveyor belts at the ends of the gutters beside the pin deck as required by the sport's ruling body, the National Duckpin Bowling Congress that move fallen pins to the pit. The Sherman's sweep device is located on the right side, vertical "kickback" panel of the lane and pivots 180 degrees (much like a fence gate) to clear pins. The pin table always handles the pins by the neck. A new rack of pins is created with a moving magazine that is shaped like a pin triangle. When the magazine is loaded and the bowler is ready for a new set of pins, a lever pushes the magazine unit out to the pin table so it can take the pins out of the magazine and then set them down on the lane. The