Abstract: An improved quiet impact printer mechanism for use with a typewriter or printer which includes a print hammer having a significant mass for impacting a character pad against an ink ribbon, paper and a platen. A first embodiment has a drive means providing insignificant inertia through the use of a cam driven by an inexpensive, low torque reversible motor which is coupled to the hammer through a cam follower. The cam arrangement may also propel the hammer toward the platen under a predetermined series of controlled velocities. A second embodiment of a printer mechanism, similar to that described above, includes a rotary member driven by a motor link, coupled to the print hammer for moving the hammer toward and away from the platen. The motor link includes an acoustic noise reducing means.

Abstract: An improved quiet impact printer mechanism for use with a typewriter or printer which includes a print hammer having a high effective mass at the print point for impacting a character pad against an ink ribbon, paper and a platen at a relatively low velocity. The pinter mechanism drive means includes a cam driven by a low torque reversible motor for moving a cam follower. The cam follower is coupled to the hammer by means of a pin and moves the hammer towards the platen. The cam may also cause movement of the hammer toward the platen under a predetermined series of controlled velocities.

Abstract: There is shown an inking apparatus for stamping on a localized area, and with a speedy application, a selected reproduction to a travelling or advanced product. This inking roller is free-turning with a light brake to prevent free wheeling. A four-bar linkage is used with two eccentrics. One eccentric is preferably rotated with at least twice the revolutions of the other eccentric. The four-bar linkage carries on an extending end of a first bar the stamp which is moved into peripheral engagement of the inking roller and then to the surface of the product. The movement of the stamp is in a path prescribed by the eccentrics and the four-bar linkage. The stamp in its peripheral engagement with the inking roller causes said roller to be inched forward rotationally to present a fresh surface to the stamp when next brought to the inking roller.

Abstract: A toy simulating a typewriter for enabling a child to compose a large number of sentences from a limited number of words, the toy having a keyboard with a plurality of keys, each key having a word imprinted thereon. A carriage is provided with paper receiving imprints of the words from hinged type arms operable upon depression of the keys, depression of one of the keys performing the imprinting operation and release of the key actuating a spacer frame coacting with an indexing bar for incrementing the carriage under force of a spring a predetermined distance.