Power driven type action in electric typewriter

Claim 2

Power-driven type action in an electric typewriter comprising a power-driven rotary toothed snatch roll, an actuating lever pivotally mounted on a shaft and pivotally connected to driven members including a type bar, a spring biased engage member slidably and pivotally mounted on the actuating lever and having a pawl for pivotal displacement into engagement with the snatch roll, an intermediate lever pivotted on the actuating lever, return spring bias means tending to hold the intermediate lever and the actuating lever in the home position, and a key lever engageable with the intermediate lever, said engage member being locked at the position in which the pawl of the engage member is out of engagement with the snatch roll, and the intermediate lever having three projections one of which is engageable with the key lever and the second and third of which are engageable with the engage mEmber to afford displacement of it relative to the actuating lever, the second projection being operable to slide the engage member and the third being operable to pivot the engage member to return it to said locked position, said intermediate lever being adapted to be rotated by the key lever to displace the engage member so that the pawl of the engage member engages with a tooth of the snatch roll, whereby upon rotation of the snatch roll, the engage member, the intermediate lever and the actuating lever are rotated together by the snatch roll to actuate type bar.

Claim 3

Power-driven type action in an electric typewriter in accordance with claim 1 wherein the actuating lever has a shoulder and an edge, and the engage member is provided with a portion adapted to pivot between the shoulder and the edge of the actuating lever upon sliding movement of the engage member to unlock said portion from said shoulder, said pivotal movement engaging said pawl with the snatch roll.

Claim 4

Power-driven type action in an electric typewriter in accordance with claim 1 wherein the key lever has a cam portion engageable with the first projection of the intermediate lever during return movement thereof when the key lever is forcibly depressed further than normal depressed position, so that the intermediate lever is rotated again to displace the engage member to engage the pawl of the engage member with a tooth of the snatch roll.

Claim 5

Power-driven type action in an electric typewriter comprising a power-driven rotary toothed snatch roll, an actuating lever pivotally mounted on a shaft and pivotally connected to driven members including a type bar, a spring biased engage member slidably and pivotally mounted on the actuating lever and having a pawl for pivotal displacement into engagement with the snatch roll, an intermediate lever pivoted on the actuating lever, return spring bias means tending to hold the intermediate lever and the actuating lever in the home position, a key lever engageable with the intermediate lever, and a spring-urged repeat-preventing lever rotatably mounted on the key lever, said engage member being adapted to be locked at the position in which the pawl of the engage member is out of engagement with the snatch roll, the intermediate lever having three projections one of which engageable with the repeat-preventing lever and the second and third of which are engageable with the engage member to displace it slidably and pivotally respectively relative to said actuating lever, said intermediate lever being adapted to be rotated by engagement with repeat-preventing lever to slide and release the engage member from its locked position, so that the pawl of the engage member engages with a tooth of the snatch roll whereby upon rotation of the snatch roll the engage member, the intermediate lever and the actuating lever are rotated together by the snatch roll to actuate the type bar, and the intermediate lever can be returned to the initial position by rotating the repeat-preventing lever on the key lever by the first projection as it is returned by said return spring bias means.

Claim 6

Power-driven type action in an electric typewriter comprising a power-driven rotary toothed snatch roll, an actuating lever pivotally mounted on a shaft and pivotally connected to driven members including a type bar, a spring biased engage member slidably and pivotally mounted on the actuating lever and having a pawl for pivotal displacement into engagement with the snatch roll, an intermediate lever pivoted on the actuating lever, return spring bias means tending to hold the intermediate lever and the actuating lever in the home position, a key lever engageable with the intermediate lever, and a spring-urged repeat-preventing lever rotatably mounted on the key lever, said engage member being adapted to be locked at the position in which the pawl of the engage member is out of engagement with the snatch roll, the intermediate lever having three projections one of which engageable with the repeat-preventing lever and the second and third of which are engageable with the engage member to displace it slidably and pivotally respectively relative to said actuating lever, said intermediate lever being adapted to be rotated by engagement with repeat-preventing lever to slide and release the engage member from its locked position, so that the pawl of the engage member engages with a tooth of the snatch roll whereby upon rotation of the snatch roll the engage member, the intermediate lever and the actuating lever are rotated together by the snatch roll to actuate the type bar, and the intermediate lever can be returned to the initial position by rotating the repeat-preventing lever on the key lever by the first projection as it is returned by said return spring bias means.