US1677922A - Hand-operated cutting implement - Google Patents

Description

July 24, 1928.

J. KASZTLER HAND ornnunv cuw'me mrmgam Filed April 1927 (finfaszi'ler mvrg oR BY 2 "railway I Patented July 24, 1928.

UNITED STATES JOHN KASZTLER, OF CHICAGO, ILLINOIS.

HAND-OPERATED CUTTING IMPLEMENT.

Application filed April 8,

This invention relates to new and useful improvements in cutting implements, and more particularly to a hand operated cutting implement which is especially adapted, for use in the cutting of pipe and the like. One of the objects of myinventionis the provision of a device of this character, which is comparatively easy to handle, whereby an operator mayreadily apply the same to the worlr to be operated upon and easily operate the same after being applied to the work.

Another object of my invention is the provision of a device of the above character, which isprovided with means for gripping the work and holding the-same steady while the same is being operated upon, and at the same time hold the work from displacement, so that the cuttingimplement will travel through the same. I

Vfith the above and other objects in view the invention consists in the novel features of construction, the combination and arrangement of parts hereinaf er more fully set forth, pointed out in the claims and shown in the accompanying drawings, in which:

Figure 1 is a longitudinal sectional view of a cutting implement constructed in accordance with my invention, and

Figure 2 is a longitudinal sectional view on the line 22 of Figure 1.

In carrying out my invention I provide a hollow body member 1, which is substantially rectangular in cross section and closed I at one end, with the closed end terminating into a handle portion 2. Extending from the other end of the body at one side thereof, is an integral arm 3, while a parallel arm 4 is hinged at the end of the body on the opposite side as shown at 5.

Formed at the outer ends of the arms 3 and t are the bearing sleeves 6 in which is rotatably mounted the shaft 7. The rotary cutting implement 8, shownin the drawings as a saw, is formed with a cent 'al sleeve 9 mounted on and secured to the shaft 7 between the bearing sleeves 6. One end of the shaft has a securing nut 10 thereon, while the other projects beyond one of the sleeves 6 and has a small gear 11 mounted thereon and secured thereto.

The gear 11 meshes with a larger gear 12 mounted on a stud shaft 13 detachably secured to one side wall of the body 1, as shown at 14. It will be apparent that by 1927. Serial 110,182,083. 1

employing a relatively large gear 12 and small gear 11 the cutting implement may be rotated at a comparatively high rate of speed. Attached to the outer face of the gear 12 is a handle member 15' adapted to be grasped for imparting movement to the gears 11 and 12.

In order to provide means for holding the work steady and atthe same time draw the same toward the cutting implement, an arm 16 is provided which is formed intermediate it's ends with a longitudinal slot 17 to receive the shaft as shown in Figured, The inner end of the arm 16 is formed with a transverse portion 18, which has a stud 19 on its inner face. Extending through the:

stud 19 is one end of a 'coil spring 20, the outer convolutlons ofv which are mounted upon the stud- The spring 20 is housed within the body 1 and its inner end is sc cured to a cross pin 21, the ends of which are .of a pin 25. This jaw 23 is normally urged toward the work A by means of a spring 26, preferably U-shaped with its intermediate portion bearing against the outer end of the arm 16 while theside portions are coiled upon the endsof the pivot pin 25. The ends of the spring are crossed as shown at 27 and their extremities bent at right angles for engagement with the jaw for normally urging the jaw toward the work.

From the above it will be readily apparent that I have provided an improved cutting implement which can be readily operated by grasping the handle 2 by one hand and positioning the work between the outer end of the arm 16 and the jaw 23 with the other ,hand. After the work has been placed in position, the handle 15 is grasped for impartmg rotary movement to the gears 11 and 12 and the saw or cutting implement 8. It will be apparent that as the saw cuts into the work, the tension of the spring 20 will have a tendency to draw the work inwardly toward the body and the work being positioned between the outer end of the arm 16 and the jaw 23, will beheld against displacement. It will be apparent that the tension of the spring 26 will be of sufficient strength to hold the work against the lower end of the arm 16 when the tension of the spring 20' is functioning to pull the work against the implement.

While I have particularly specified that the device is especially adapted for use in cutting pipe and the like, it will be apparent that it may be used for many other puraosesp ,While I have shown' and described the preferred construction of my device, it will be apparent that various changes and alterations may be carried out without departing from the spirit of the invention or the scope of the appended claims.

' 1 claim as my invention:

1. in a device of the class described and in combination, a body member having a handle at oneend, a stationary arm projecting from the other end, a hinged arm nornially parallel with the first arm, a cutting implement removably supported for rotation between the outer ends of said arms, means '-for imparting movement to said cutting implement, and means supported by the body for engaging the work being operated upon by the cutting implement.

2. in a device of the class described, a hollow body member having a handle at one end, supporting arms extending from the other end, a rotary cutting implement removably supported between said arms, means for imparting movement to said out ting implement, an arm movably mounted relative to said body and cutting impleinner end of the hollow portion of the body,-

and a spring actuated clamping jaw for clamping the work to the outer end of said arm. n

4t. In a device of the class described, a body member having a handle at one end, spaced supporting arms at the other end,'a shaft removably mounted in the outer ends of said arms, a cutting implement carried by said arm, means for rotating said; shaft, and means for engaging the work being operated upon, including an arm formed with a slot to receive the shaft, a spring connecting the inner end of thearm to the inner end of the hollow portion of the body, and a spring actuated clamping jaw for clamping the work to the outer end of said arm.

JOHN KA SZTLER.

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