Pipe cutter

• US 4,103,419 A
• Filed: 04/04/1977
• Issued: 08/01/1978
• Est. Priority Date: 08/19/1976
• Status: Expired due to Term

• Current Assignee: The Stanley Works Pty Ltd. (Stanley Black & Decker, Inc.)
• Original Assignee: The Stanley Works Pty Ltd. (Stanley Black & Decker, Inc.)
• Inventors: Day, Ronald, Matthews, Bruce Ernest
• Primary Examiner(s): Watson, Robert C.
• Application Number:
  US05/784,337
• Time in Patent Office: 484 Days
• Field of Search: 30/93-102, 30/91.2
• US Class Current: 30/95
• CPC Class Codes: B23D 21/10 with other cutting blades or tools

Abstract

A pipe cutting device for plastics pipe, including two members pivoted together and carrying jaws which can be opened and closed by respective closing and opening movements of generally colinear handles of the members. The jaws carry rollers so that the jaws, when closed, bring the rollers into engagement with the periphery of the pipe to be cut in such a way that the device can be easily moved circumferentially around the pipe, one member carrying a cutting element which circumferentially cuts the pipe during such movement.

Claims

1. A pipe cutting device comprising:

A. a first operating member having an elongated handle portion and a jaw portion at one end thereof having its longitudinal axis extending transversely of the longitudinal axis of said handle portion;

B. a second operating member having an elongated handle portion and a jaw portion at one end thereof having its longitudinal axis extending transversely of the longitudinal axis of said handle portion, the longitudinal axes of the handle portions of said first and second operating members being closely spaced and substantially parallel, the jaw portion of said second operating member being disposed in spaced relationship to said first operating member to provide a spacing between said jaw portions for receiving a pipe therebetween;

C. pivot means pivotably mounting said operating members adjacent the jaw portion of said first operating member for movement of the jaw portions about a pivot point defined thereby in response to movement of said handle portions, said handle portions extending in close parallel relationship in the closed position thereof and the jaw portions also extending in generally parallel relationship in the closed position thereof, movement of said first operating member handle portion away from said second operating member handle portion causing pivoting of said jaw portions to increase the spacing therebetween at the outer ends thereof to permit insertion of a pipe therebetween;

D. a pair of guide roller means rotatably mounted on each of said jaw portions and spaced along the length thereof with the periphery of said guide roller means extending beyond the opposed edges of said jaw portions and defining an imaginary circle therebetween for gripping and rotatably supporting a pipe therebetween;

E. a cutting blade mounted on the jaw portion of said one operating member for movement beyond the opposed edges of the jaw portion and into the imaginary circle defined by said guide roller means; and

F. adjustment means for said cutting blade mounted on said jaw portion of said first operating member and operable to move said cutting blade relative to the opposed edge of the jaw portion, whereby the pipe may be gripped between said jaw portions and supported upon said roller means by one-handed gripping of said handle portions and the cutting blade may be advanced by manipulation of the adjustment means into progressively deeper engagement with the associated pipe to sever the pipe upon rotation of the cutting device about the pipe.

2. The cutting device of claim 1 wherein said pivot means permits shifting of the pivot point along the length of said second operating member to vary the spacing between said jaw portions in the closed position thereof.

3. The cutting device of claim 1 wherein said opposed edges of said jaw portions are concavely arcuate between the pair of spaced guide roller means thereof.

4. The cutting device of claim 1 wherein said guide roller means each comprise a pair of rollers on opposite sides of said jaw portions.

5. The cutting device of claim 4 wherein said cutting blade is disposed between the pair of rollers closest to the handle portion of said first operating member.

6. The cutting device of claim 1 wherein said handle portions of said operating members are of generally U-shaped cross section with the handle portion of said first operating member receiving the handle portion of said second operating member therewithin.

7. A pipe cutting device comprising:

A. a first operating member having an elongated handle portion and a jaw portion at one end thereof having its longitudinal axis extending transversely of the longitudinal axis of said handle portion;

B. a second operating member having an elongated handle portion and a jaw portion at one end thereof having its longitudinal axis extending transversely of the longitudinal axis of said handle portion, the longitudinal axes of the handle portions of said first and second operating members being closely spaced and substantially parallel, the jaw portion of said second operating member being disposed in spaced relationship to said first operating member to provide a spacing between said jaw portions for receiving a pipe therebetween;

C. pivot means pivotably mounting said operating member adjacent the jaw portion of said first operating member for movement of the jaw portions about a pivot point defined thereby in response to movement of said handle portions, said handle portions extending in close parallel relationship in the closed position thereof and the jaw portions also extending in generally parallel relationship in the closed position thereof, movement of said first operating member handle portion away from said second operating member handle portion causing pivoting of said jaw portions to increase the spacing therebetween at the outer ends thereof to permit insertion of a pipe therebetween, said pivot means comprising a disengageable fastener and aligned apertures in the two operating members, at least said second operating member having a series of apertures spaced along the longitudinal axis of its handle portion whereby said disengagable fastening means will permit the shifting of the pivot point along the length of said second operating member to vary the spacing between said jaw portions in the closed position thereof;

D. a pair of guide roller means rotatably mounted on each of said jaw portions and spaced along the length thereof with the periphery of said guide roller means extending beyond the opposed edges of said jaw portions and defining an imaginary circle therebetween for gripping and rotatably supporting a pipe therebetween;

E. cutting means mounted on the jaw portion of said one operating member for movement between the opposed edges of the jaw portion and into the imaginary circle defined by said guide roller means; and

F. adjustment means for said cutting means mounted on said jaw portion of said first operating member and operable to move said cutting means relative to the opposed edge of the jaw portion, whereby the pipe may be gripped between said jaw portions and supported upon said roller means by one-handed gripping of said handle portions and the cutting means may be advanced by manipulation of the adjustment means into progressively deeper engagement with the associated pipe to sever the pipe upon rotation of the cutting device about the pipe.

8. The cutting device of claim 7 wherein said cutting means is disposed adjacent the pair of rollers closest to the handle portion of said first operating members.

9. The cutting device of claim 7 wherein said opposed edges of said jaw portions are concavely arcuate between the pair of spaced guide roller means thereof.