Repeat typing mechanism for power operated typewriters

Claim 2

A repeat typing mechanism for power operated typewriters comprising: a. a frame; b. a power driven snatch roll mounted on the frame so as to be continuously rotated in one direction; c. a driven part actuated by the snatch roll; d. an actuating member disposed transversally below the snatch roll and having its rear end operatively connected to the driven part; e. a fixed shaft provided on the frame ahead of the snatch roll so as to have the actuating member rockably mounted about said shaft; f. means for holding the actuating member normally in a rest position; g. a pawl member provided with an engaging arm upwardly extending to the rear side of the snatch roll and having a pawl nose detachably engaged with the snatch roll, when not operated, maintained in a position disengaged from the snatch roll and, when operated, engaged therewith to cause the actuating member to rock against the force of the holding means, thereby actuating the driven part; h. a key lever substantially horizontally positioned transversally above the snatch roll so as to be depressed to first and second positions; i. a control lever operatively connected to the key lever so as to cause the pawl nose to engage the snatch roll upon depression of the key lever; j. a first bent lug horizontally attached to one end of the control lever facing the upper part of the pawl member so as to cause the pawl nose to engage the snatch roll upon depression of the key lever and while said lever is held depressed to be pressed against the top edge of the actuating member according to a returning movement of the actuating member, thereby rotating the control lever; and k. a second bent lug suspended from said one end of the control lever along the rear edge of the engaging arm substantially at right angles to the first bent lug so as to depress the engaging arm upon rotation of the control arm during the returning movement of the actuating member before the pawl member returns to its disengaged position and only while the key lever is maintained at the second position, causing the pawl nose immediately to engage the snatch roll and thereby permitting a repeat typing action while the key lever is maintained at the second position.

Claim 3

A repeat typing mechanism for power operated typewriters comprising: a. a frame; b. a power driven snatch roll mounted on the frame so as to be continuously rotated in one direction; c. a driven part actuated by the snatch roll; d. an actuating member disposed transversally below the snatch roll and having its rear end operatively connected to the driven part; e. a fixed shaft provided on the frame ahead of the snatch roll so as to have the actuating member rockably mounted about said shaft; f. a three-armed pawl member comprised of an engaging arm upwardly extending to the rear side of the snaTch roll and having a pawl nose detachably engaged with the snatch roll, a control arm extending substantially horizontally below the snatch roll and provided with a cam surface at the lower part and a pivoted arm extending toward the rear side of the mechanism and pivoted to the actuating member; g. first holding means for holding the actuating member normally in a rest position; h. second holding means for holding the pawl member in a normal position with respect to the actuating member so as to keep the pawl nose of the engaging arm disengaged from the snatch roll; i. a key lever substantially horizontally positioned transversally, above the snatch roll so as to be depressed to first and second positions; j. a crank lever pivoted to the rear end of the key lever and mounted on the frame so as to rock according to the depression of the key lever; k. a control lever rotatably supported at one end of the crank lever, normally maintained in a position disengaged from the engaged arm and, upon depression of the key lever, engaged with the engaging arm to rock the pawl member so as to cause the pawl nose of the engaging arm to engage the snatch roll against the force of the second holding means, thereby rocking the actuating member to actuate the driven part; l. disengaging means mounted on the frame just below said cam surface of the control arm so as to disengage the pawl nose of the engaging arm from the snatch roll after the predetermined rocking movement of the actuating member; m. a first bent lug horizontally attached to one end of the control lever facing the upper part of the pawl member so as to cause the pawl nose to engage the snatch roll upon depression of the key lever and, while said lever is held depressed, to be pressed against the top edge of the actuating member according to a returning movement of the actuating member, thereby rotating the control lever; and n. a second bent lug suspended from said one end of the control lever along the rear edge of the engaging arm substantially at right angles to the first bent lug so as to depress the engaging arm upon rotation of the control lever during the returning movement of the actuating member before the pawl member returns to its normal disengaged position and only while the key lever is maintained at the second position, causing the pawl nose immediately to engage the snatch roll and thereby permitting a repeat typing action while the key lever is maintained at the second position.

Claim 4

A repeat typing mechanism for power operated typewriters comprising: a. a frame; b. a power driven snatch roll mounted on the frame so as to be continuously rotated in one direction; c. a driven part actuated by the snatch roll; d. an actuating member disposed transversally below the snatch roll and having its rear end operatively connected to the driven part; e. a fixed shaft provided on the frame ahead of the snatch roll so as to have the actuating member rockably mounted about said shaft; f. a three-armed pawl member comprised of an engaging arm upwardly extending to the rear side of the snaTch roll and having a pawl nose detachably engaged with the snatch roll, a control arm extending substantially horizontally below the snatch roll and provided with a cam surface at the lower part and a pivoted arm extending toward the rear side of the mechanism and pivoted to the actuating member; g. first holding means for holding the actuating member normally in a rest position; h. second holding means for holding the pawl member in a normal position with respect to the actuating member so as to keep the pawl nose of the engaging arm disengaged from the snatch roll; i. a key lever substantially horizontally positioned transversally, above the snatch roll so as to be depressed to first and second positions; j. a crank lever pivoted to the rear end of the key lever and mounted on the frame so as to rock according to the depression of the key lever; k. a control lever rotatably supported at one end of the crank lever, normally maintained in a position disengaged from the engaged arm and, upon depression of the key lever, engaged with the engaging arm to rock the pawl member so as to cause the pawl nose of the engaging arm to engage the snatch roll against the force of the second holding means, thereby rocking the actuating member to actuate the driven part; l. disengaging means mounted on the frame just below said cam surface of the control arm so as to disengage the pawl nose of the engaging arm from the snatch roll after the predetermined rocking movement of the actuating member; m. a first bent lug horizontally attached to one end of the control lever facing the upper part of the pawl member so as to cause the pawl nose to engage the snatch roll upon depression of the key lever and, while said lever is held depressed, to be pressed against the top edge of the actuating member according to a returning movement of the actuating member, thereby rotating the control lever; and n. a second bent lug suspended from said one end of the control lever along the rear edge of the engaging arm substantially at right angles to the first bent lug so as to depress the engaging arm upon rotation of the control lever during the returning movement of the actuating member before the pawl member returns to its normal disengaged position and only while the key lever is maintained at the second position, causing the pawl nose immediately to engage the snatch roll and thereby permitting a repeat typing action while the key lever is maintained at the second position.

Claim 5

A repeat typing mechanism according to claim 1 wherein said first bent lug and second bent lug are integrally formed with said control lever.

Claim 6

A repeat typing mechanism according to claim 2 wherein said first bent lug and second bent lug are integrally formed with said control lever.