CUTTING DEVICE

• US 3,741,062 A
• Filed: 04/08/1971
• Issued: 06/26/1973
• Est. Priority Date: 04/08/1971
• Status: Expired due to Term

• Current Assignee: Hendrik Glastra
• Original Assignee: Hendrik Glastra
• Inventors: Glastra, Hendrik
• Primary Examiner(s): Meister, J. M.
• Application Number:
  US05/132,291
• Time in Patent Office: 810 Days
• Field of Search: 83/556,925CC,561,170,747
• US Class Current: 83/556
• CPC Class Codes: B26F 1/382 wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
• CPC Class Codes: Y10S 83/936 Cloth or leather
• CPC Class Codes: Y10T 83/283 With means to control or modify temperature of apparatus or work
• CPC Class Codes: Y10T 83/6875 With means permitting tool to be rotatably adjusted about its cutting edge during cutting
• CPC Class Codes: Y10T 83/8737 With tool positioning means synchronized with cutting stroke
• CPC Class Codes: Y10T 83/8745 Tool and anvil relatively positionable

Abstract

A cutting device provided with a needle-shaped cutting member which is at its free end provided with at least one cutting edge at an angle with the longitudinal axis and coupled to a driving mechanism which is constructed in such a way that during operation the cutting edge is periodically raised to above the material and can be rotated at the same time through an angle.

Claims

1. In a cutting device for sheetlike material, said cutting device having an elongated cutting member provided with a cutting edge on one end thereof, and a driving mechanism coupled to the other end of said cutting member for reciprocating said cutting member in its longitudinal direction between a position in which the cutting edge penetrates the material and a position in which the cutting edge is free from said material, said driving mechanism comprising a rotatable eccentric, a driving rod having one end thereof coupled to said eccentric whereby said driving rod is driven by said eccentric, elongated guide means, slide means slidably mounted on and guided by said guide means for slidable movement longitudinally thereof, said slide means being coupled to the other end of said driving rod whereby said slide means is reciprocated on said guide means in response to rotation of said eccentric, shaft means freely rotatably supported on said slide means, chuck means mounted on one end of said shaft means for engaging said other end of said cutting member, and control means operatively interconnected to the other end of said shaft means for varying the angular position thereof relative to its longitudinal axis for varying the angular position of the cutting edge relative to said axis.

2. A device according to claim 1, wherein said control means includes a rotatable control member substantially coaxially aligned with and disposed adjacent said other end of said shaft means, said control member having a recess in the end thereof disposed opposite said shaft means for receiving therein the adjacent end of said shaft means.

3. A device according to claim 1, wherein said control means includes a rotatable control member disposed in axial alignment with said shaft means, said control member being disposed opposite said other end of said shaft means, said control member having an elongated axial recess with tapering walls ending in a slit, and said other end of said shaft means including a flat elongated coupling member extending along said axis and having a free end thereof disposed within said axial recess, and a control element interconnected to said control member for rotating same about said axis to vary the angular position of said control member and as a consequence vary the angular position of the cutting member when same is being moved toward a position in which it penetrates the material.

4. A device according to claim 1, wherein the control means includes a driving rotatable control member disposed opposite and in substantial axial alignment with said other end of said shaft means, said control member having a tapered concentric cavity extending inwardly from the end thereof, and said other end of said shaft means including a coupling member having a tapered free end which engages with friction within the cavity formed in said control member, said control member and said coupling member being positioned with respect to said eccentric and said driving rod in such a manner that when the shaft means is adjacent said second position said tapered end of said coupling member is engaged with the wall defining said cavity and said driving rod and said eccentric engage said control member and cause angular displacement thereof for causing a corresponding angular displacement of said cutting edge.