Harmonic trammel drive

Claim 2

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, that improvement which comprises: a. secondary guide means on each side of said primary stabilizer guide, b. means on said link to interengage said secondary guide means selectively near the respective ends of the reciprocal movement of said output member, and c. means providing a slide connection between said arm and said link, wherein a controlled dwell of said lineal output member at the end of a stroke thereof is materially increased during rotation of said drive shaft.

Claim 3

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, that improvement which comprises: a. secondary guide means on each side of said primary stabilizer guide, b. means on said link to interengage said secondary guide means selectively near the respective ends of the reciprocal movement of said output member, and c. means providing a slide connection between said arm and said link, wherein a controlled dwell of said lineal output member at the end of a stroke thereof is materially increased during rotation of said drive shaft.

Claim 4

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, that improvement which comprises: a. secondary guide means on each side of said primary stabilizer guide, b. means on said link to interengage said secondary guide means selectively near the respective ends of the reciprocal movement of said output member, and c. means providing a slide connection between said arm and said link, wherein a controlled dwell of said lineal output member at the end of a stroke thereof is materially increased during rotation of said drive shaft.

Claim 5

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, that improvement which comprises: a. a plurality of secondary guide means mounted adjacent said primary stabilizer guide positioned to lie adjacent the path of a portion of said link at the respective ends of the reciprocal stroke of the output member, b. follower means at said portion of said link to interengage said respective guide means to control the final progression of said link at the stroke extremities, and c. slide connection in the form of a slot and pin on said drive arm and said link to enable said guide means to control the final motion of said link at said stroke extremities.

Claim 6

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, that improvement which comprises: a. a plurality of secondary guide means mounted adjacent said primary stabilizer guide positioned to lie adjacent the path of a portion of said link at the respective ends of the reciprocal stroke of the output member, b. follower means at said portion of said link to interengage said respective guide means to control the final progression of said link at the stroke extremities, and c. slide connection in the form of a slot and pin on said drive arm and said link to enable said guide means to control the final motion of said link at said stroke extremities.

Claim 7

A drive as defined in claim 2 in which said guide means are positioned to engage said follower means as said stabilizer guide is disengaged from said link toward the end of a stroke.

Claim 8

A drive as defined in claim 2 in which said guide means are curved to control the acceleration and deceleration of said link at the end of the stroke.

Claim 9

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating linear movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm, an improvement to enhance the kinematic characteristics of the output member including a controllable modification of velocity and acceleration which comprises: a. means on said arm and means on said link to provide a combination sliding and pivotal relation therebetween.

Claim 10

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating linear movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm, an improvement to enhance the kinematic characteristics of the output member including a controllable modification of velocity and acceleration which comprises: a. means on said arm and means on said link to provide a combination sliding and pivotal relation therebetween.

Claim 11

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, an improvement to enhance the kinematic characteristics including an increase in dwell and a controllable modification of velocity and acceleration which comprises: a. secondary guide means adjacent said primary stabilizer guide, b. means on said link to engage said secondary guide means at the end of each reciprocal stroke, and c. means on said arm and means on said link interengaging to permit a limited sliding motion and pivotal motion between said arm and said link.

Claim 12

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, an improvement to enhance the kinematic characteristics including an increase in dwell and a controllable modification of velocity and acceleration which comprises: a. secondary guide means adjacent said primary stabilizer guide, b. means on said link to engage said secondary guide means at the end of each reciprocal stroke, and c. means on said arm and means on said link interengaging to permit a limited sliding motion and pivotal motion between said arm and said link.

Claim 13

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, an improvement to enhance the kinematic characteristics including an increase in dwell and a controllable modification of velocity and acceleration which comprises: a. a first means on said link engageable with said primary guide, b. a second means on said link spaced from said first means, c. secondary guide means above and spaced to each side of said primary guide positioned to engage with and guide said second means on said link respectively at respective ends of the movement of said link, and d. means on said arm and means on said link interengaging to permit a limited sliding and pivotal motion between said arm and said link.

Claim 14

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, an improvement to enhance the kinematic characteristics including an increase in dwell and a controllable modification of velocity and acceleration which comprises: a. a first means on said link engageable with said primary guide, b. a second means on said link spaced from said first means, c. secondary guide means above and spaced to each side of said primary guide positioned to engage with and guide said second means on said link respectively at respective ends of the movement of said link, and d. means on said arm and means on said link interengaging to permit a limited sliding and pivotal motion between said arm and said link.

Claim 15

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, an improvement to enhance the kinematic characteristics including an increase in dwell and a controllable modification of velocity and acceleration which comprises: a. a means on said arm pivotally connected to said link to provide a combination sliding and pivotal relation therebetween at a point midway between the point of the axis of rotation of said arm and a pivotal connection to said output member, and b. secondary guide means for said link operable at portions of the movement of the link when it is unguided by said stabilizer guide.

Claim 16

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, an improvement to enhance the kinematic characteristics including an increase in dwell and a controllable modification of velocity and acceleration which comprises: a. a means on said arm pivotally connected to said link to provide a combination sliding and pivotal relation therebetween at a point midway between the point of the axis of rotation of said arm and a pivotal connection to said output member, and b. secondary guide means for said link operable at portions of the movement of the link when it is unguided by said stabilizer guide.

Claim 17

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, an improvement to enhance the kinematic characteristics including an increase in dwell and a controllable modification of velocity and acceleration which comprises: a. a means on said arm pivotally connected to said link to provide a combination sliding and pivotal relation therebetween at a point spaced from the midpoint between the axis of rotation of said arm and a pivotal connection to said output member, and b. secondary guide means for said link operable at portions of the movement of the link when it is unguided by said stabilizer guide.

Claim 18

In a trammel reciprocating drive of the type utilizing a drive shaft, an output member mounted for reciprocating lineal movement, a drive arm driven by said shaft, a link connecting said arm and said output member, and a primary stabilizer guide for one end portion of said link during an intermediate portion of the movement thereof in the course of a motion of 180* of said arm from one end dwell motion of said output member to another end dwell, an improvement to enhance the kinematic characteristics including an increase in dwell and a controllable modification of velocity and acceleration which comprises: a. a means on said arm pivotally connected to said link to provide a combination sliding and pivotal relation therebetween at a point spaced from the midpoint between the axis of rotation of said arm and a pivotal connection to said output member, and b. secondary guide means for said link operable at portions of the movement of the link when it is unguided by said stabilizer guide.