Counting and printing mechanism with interchangeable unit printer wheel
AssigneeEmerson Electric Co.
InventorsArnold E. Roberts, Jack D. Harshman
Life of this patent
Estimating the term…
Abstract
A unit designating printer wheel for a counter-printer device is arranged for convenient interchangeable assembly between the drive wheel and counting printer wheels. The unit printer wheel has a plurality of unit designating characters around the rim thereof and is arranged to be locked in rotatably adjusted position; and a hub member rotatable in the unit designating printer wheel is arranged to transmit motion from the drive wheel to the counting printer wheels.
Claims10
In a counter-printer device, a frame, a printer wheel shaft mounted in said frame, a counting printer wheel rotatably mounted on said shaft and having numerical printing characters on the rim thereof, a drive wheel rotatably mounted on said shaft, and a unit designating printer wheel assembly rotatably mounted on said shaft between said drive wheel and said counting printer wheel, said assembly comprising a unit designating printer wheel having unit designating printing characters on the rim thereof and a central bore therethrough, and a driving hub member mounted for rotation in said wheel bore, said hub having a flange at each end and a central bore therethrough receiving said shaft for rotation thereon, means on the adjacent faces of said hub member and said drive wheel cooperating to form a driving connection and means on the adjacent faces of said hub member and said counting printer wheel cooperating to form a driving connection, support means adjacent the rim of said unit designating printer wheel, and releasable locking means for locking said unit designating printer wheel in a selected rotated position to said support means.
A unit designating printer wheel assembly for mounting on the printer wheel shaft between the drive wheel and counting printer wheels of a counter-printer device, in which device the drive wheel drives the first adjacent counting printer wheel through cooperating means on their adjacent faces forming a driving connection and, wherein, the remaining counting printer wheels are consecutively driven by means including transfer pinions mounted on a transfer pinion shaft lying adjacent to and parallel with the printer wheel shaft;
- said unit designating printer wheel assembly comprising a unit designating printer wheel having printing characters equally spaced on the rim thereof and a central bore therethrough, a driving hub member rotatably mounted in said wheel bore and having a flange member at each end, said hub member having a central bore therethrough for receiving said printer wheel shaft for rotation thereon, means on one of said hub flanges adapted to cooperate with said cooperating means on the adjacent face of said driving wheel to form a cooperating connection, and means on the other of said hub flanges adapted to cooperate with said driving means on the adjacent face of the adjacent counting printer wheel to form a driving connection, circularly spaced pairs of opposed abutment surfaces on said wheel equal in number to and having the same angular spacing about the wheel center as said printing characters, releasable locking means for selectively locking said wheel in a rotated position comprising a locking member rotatably mounted on said unit designating printer wheel assembly, said locking member having a first radially extending portion with a pair of opposed abutment surfaces thereon adapted to engage opposite sides of said adjacent transfer pinion shaft to prevent rotation thereof but being movable axially and radially with respect to said transfer pinion shaft while being in engagement therewith, and said locking member having a pair of abutment surfaces on a second portion thereof movable into and out of locking engagement with any selected one of said pairs of abutment surfaces on said wheel.
Dependencies are inferred from the claim text.