Abstract: A typewriter power roll having a hollow core is assembled with end bearings which are adapted to rotatably support the power roll on a stationary center shaft. Assembling the core and end bearings as a unit allows the periphery to be ground concentric with the bearing axes. After grinding, the power roll can be located in a typewriter and the center shaft inserted through side frame openings and the bearings and adjustably secured to the typewriter side frames at opposite ends by being wedged between a slotted surface of an adjusting plate adjustably secured to the side frames and an eccentric mounted on the adjusting plate.

Abstract: A non-homing positioning mechanism to effect type selective movements of a single element typehead by means of coordinate band systems wherein the coordinate band systems are cntrolled by a translator comprising a four armed cross-shaped member unidirectionally rotatable in 90.degree. steps. A set of radially spaced pins are arranged along opposing arms of the cross-shaped member, the sets being alternately selectively settable in response to successive character selections to cause selective band displacement incident to each 90.degree. rotation of said cross-member. One end of each band system is anchored and the other end is connected to position and hold the typehead to a selected character in accordance with the displacement thereof through selected pins on opposing arms of and incident to movement of the cross-shaped member.

Abstract: A compact lightweight typewriter carriage having a rail supporting an escapement rack, tab rack and margin rack located relative to carriage supported control elements as to minimize twisting moments relative to its frame support incident to actuation and termination of carriage movement.

Abstract: A typewriter is provided with carriage control mechanisms such that more than one carriage control function can be initiated at one time. The arrangement of carriage function controls permit a dominant carriage movement to prevail, and less dominant carriage movement function controls will either give way or, in case of tabulation, give way and await completion of the dominant function while yet remaining in active position to arrest tabulating movement. No interlocking of carriage functions is necessary. More particularly, if a dominant carriage return is initiated, carriage return movement of the carriage will cause a backspace pawl, controlled by initiation of a backspace function, either immediately before or after carriage return movement begins, to move out of engagement from the escapement rack. If either a carriage or a backspace function is in progress, i.e., the carriage is moving to effect a carriage return or backspace, a tabulation function can still be initiated.

Abstract: This invention relates to dies and the method for making dies for rolling threaded fasteners having conical or truncated conical ends. The face of each of a pair of dies which contacts the workpiece includes a first generally planar surface having a plurality of parallel ridges disposed thereon. A second generally planar surface having ridges thereon for threading the conical or truncated conical end is disposed on the face at an angle with respect to the first generally planar surface. The face on which the two generally planar surfaces are disposed is normally generally rectangular and elongated in the direction of relative movement between a pair of dies. The intersection of the two generally planar surfaces and each groove or ridge disposed on each such surface is positioned in parallel realtionship to every other ridge or groove and the intersection of the first and second generally planar surfaces.