US2283572A - Pipe cutter - Google Patents

Description

May 19, 1942. T. PETERSEN PIPE CUTTER Filed Nov. 15, 1940 INVENTOR ATTOR EYs Patented May 19, 1942 2,283,572 I PIPE CUTTER Thorvald Petersen, Erie, Pa., assignor to Reed Manufacturing Company, Erie, Pa., a corporation of Pennsylvania Application Ncvember 13, 1940, Serial No. 365,476

4 Claims. (Cl. 30-102) Pipe cutters are usually provided with a plu- A spring l5 has av coil It wrapped around a rality of rollers, some carried by the shank, othpin IT. The swinging arm I has a projection l8 ers carried by some adjusting means, and at least forming a bell crank with the arm 1 and the one of these has a cutting edge. It is desirable projection is is engaged by one end l9 of the to have these rollers related so they are so spaced 5 spring, the opposite end 20 of the spring being that the thrusts may be more or less balanced braced on the bottom of the channel so that the between the rollers. It is desirable to space the arm 1 is yieldingly held against the screw l2. rollers for large pipe far enough apart to engage When a large pipe such as 2| is to be-cut the the pipe at fairly widely spaced points on the arm 1 is swung back so that a line through the pipe. Such a spacing is too great for a small 10 cutter and tangent to the are described by the pipe. In consequence it has been common to cutter as it swings about its center of support provide several pipe cutters adapted for different will pass between the rollers 3 and 4, thus the sizes of pipe. The present invention is designed cutter roller 9 directly opposes these widely to provide a cutter with different roller spacings, spaced rollers providing a proper relation bethe arrangement permitting of opposing these tween the rollers for this size of pipe, and this rollers having the different spacing with an adspacing may be used for pipes slightly larger justable roller in proper relation to such spacing. and slightly smaller than the pipe 2| providing Further, this is accomplished in a simple way the usual range of a cutter with three wheels. by providing a swinging mounting for the ad- When a small pipe such as 22 is to be cut the justable roller, utilizing the various angles of the arm 1 is positioned so that the tangent to thev swinging mounting to properly oppose the spaced swinging arc of the wheel 9 passes between the rollers. Features and details of the invention wheels 4 and 5 so that the rollers 4, 5 and 9 are will appear from the specification and claims. in proper relation for this small pipe. Again, a

A preferred embodiment of the invention is pipe slightly smaller or larger than the pipe 22 illustrated in the accompanying drawing as fol- 25 may 'be cut with the wheels 4, 5 and 9 sothat lows: quite a large range of sizes may be accommodated Fig. 1 shows a side elevation partly in section in the single pipe cutter, the largest size accomof a cutter with a pipe of comparatively large modated by rollers 4 and 5 and being the next size in position for cutting. 7 smaller than the smallest pipe properly accom- Fig. 2 a similar view with the cutter operating modated by the rollers 3 and 4. on a smaller pipe. The swinging arm also provides a convenient Fig. 3 a section on the line 3-3 in Fig. 1. means for mounting the adjustable roller which,

l marks the shank of the cutter, 2 the nose of as shown, is the cutter wheel. In the present the cutter. The shank and nose are preferably structure this arm is mounted between the walls of channel form. As shown, non-cutting rollers of the channelled shank so that a firm mounting 3, 4 and 5 are arranged in the nose and jourfor the cutter is provided, and at the same time naled on pins 6 extending through the walls of the structure involves very littlefrictional resistthe channel in the nose. The rollers 3 and 4 ance to the proper adjustment by means of the are widely spaced and preferably in line with the screw. extension of the shank. Rollers 4 and 5 are less 40 While I have shown but one cutter wheel I do widely spaced. A line joining the centers of the not wish in the broader phases of the invention rollers 4 and 5 is at an angle to a line joining to be limited to the use of non-cutting wheels the centers of rollers 3 and 4. in conjunction therewith.

A swinging arm 1 is mounted between the walls What I claim as new is: r of the channel of the shank and is pivoted on a 1. In a pipe cutter having a shank, a nose on pin 8 secured in the walls. A cutter roller 9 is the shank, an adjusting means, a plurality of arri by the win in arm by means of a joure rollers in the nose providing pairs with different nal pin Ill. The arm has a curved surface II spacings, the combination with said shank, nose, which is enga ed by t e djus n screw l2, the adjusting 'means and rollers of a swinging arm curve H being Suc as t p ov d it directly actuated by the adjustingmeans and pivotally pp surface to the Screw With each DOSitiOIl mounted with relation to the shank, a roller on Of t e The Screw extends through the the arm, the arm placing its roller in position to usual nut l3 on the shank and the outer end of oppose a, pair of rcfllers widely spaced at one the screw is provided with a handle I4 for operangle of the arm and to oppose a pair of rollers ating the screw.

less widely spaced at another angle of the arm,

at least one of the rollers having a cutting edge.

2. In a pipe cutter having a channeled shank, a nose on the shank, adjusting means, a plurality of rollers in the nose providing pairs with different spacings, the combination with said shank, nose, adjusting means and rollers of a swinging arm actuated by the adjusting means and pivotally mounted between the walls of the channeled shank, a roller on the arm, the arm placing its roller in position to oppose a pair of rollers widely spaced at one angle of the arm and to oppose a pair of rollers less widely spaced at another angle of the arm, at least one of the rollers having a cutting edge.

3. In a pipe cutter having a shank, a nose on the shank, a plurality-of rollers in the nose providing pairs with different spacings, the combination with said shank, nose and rollers of a swinging arm pivotally mounted on the shank, a roller on the arm, the arm placing its roller in position to oppose a pair of'rollers widely spaced at one angle of the arm and to oppose a'pair of rollers less widely spaced at another angle of the arm, at least one of the rollers having a cutting edge.

4. In a pipe cutter having a shank, a nose on the shank, a plurality of rollers in the nose providing pairs with different spacings and an adj usting screw in the shank, the combination with said shank, nose and rollers of a swinging arm pivotally mounted in the shank, a roller on the arm, the arm placing its roller in position to oppose a pair of rollers widely spaced at one angle of the arm and to oppose a pair of rollers less widely spaced at another angle of the arm, at least one of the rollers having a cutting edge, the arm being provided with an arcuate surface abutting the adjusting screw making the tangent at a point of contact to the screw at right angles to the axis of the screw in its different adjustments.

THORVQLD PETERSEN.

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