US2164688A - Slate cutter and punch - Google Patents

Description

July 4, 1939. PARSONS ET AL 2,164,688

SLATE CUTTER AND PUNCH Filed NOV. 18, 1937 Incas farsons 53a INVENTORS nZey Jckzvor s Y E N R O T T A WITNESS Patented July 4, 1939 UNITED STATES PATENT OFFICE SLATE CUTTER AND PUNCH Application November 18, 1937, Serial No. 175,316

3 Claims.

This invention relates to cutting tools especially adapted for severing sheet-like materials such as tile, slate or composition shingles and has for the primary object the provision of a portable,

efficient and inexpensive device of this character which may be easily carried by a workman and set up for use to cut material to a selected size and shape and embodies a construction which permits cutting operations to be carried out with breakage and waste of the material reduced to a minimum and also may be employed for punching holes in the material.

With these and other objects in View, this invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For a complete understanding of our invention,

reference is to be had to the following description and accompanying drawing, in which Figure 1 is a perspective view illustrating a cutting tool constructed in accordance with our invention.

Figure 2 is a vertical sectional view illustrating the device.

Figure 3 is a top plan view illustrating the device.

Figure 4 is a transverse sectional view taken on the line 44 of Figure 2.

Figure 5 is a transverse sectional view taken on the line 55 of Figure 2.

Figure 6 is a transverse sectional view taken on line 66 of Figure 2.

Referring in detail to the drawing, the numeral l indicates a work or material support including a pair of relatively spaced parallel plates 2 providing therebetween a knife slot. The plates 2 are integrally connected at one end, as shown at 4, and are further connected by a substantially U- shaped bracket 5 located adjacent the other ends of said plates. The upper edges of the plates 2 form rests for the work or material 6 and the operator during the use of this device may easily slide the work or material longitudinally as well as laterally of the support so that the material may be out either straight and angularly or with or across the grain of the material. Brackets 1 are secured on the plates 2 and extend angularly therefrom to act as rests for aiding in maintaining the support in working position, as shown in Figure 1. A claw or anchor 8 is pivoted on end of the support and may bite into the ground or be driven into a harder material on which the support is positioned to cooperate with the rests in preventing the support from moving out of operative position.

Pivotally mounted on the plates 2 adjacent their integrally connected ends is a knife blade 9, the latter being pivoted at one end on the plates 2 and 5 the opposite end integral with a lever It) provided with a hand grip l I. The knife blade is arcuately curved from end to end having the convexed edge A thereof acting as the severing edge of the blade. The blade tapers from its working edge towards 10 its non-work engaging edge or concaved edge and may have its side faces hollow ground as suggested in Figures 5' and 6 of the drawing, also, the work engaging edge may be hollow ground, as shown in said Figures 5 and 6. The blade from its pivoted 15 end gradually increases in thickness towards its opposite end or the end carrying the lever H). The blade is capable of moving between the plates 2 of the support and with the work positioned on the latter and the blade brought into engagement therewith the material will be efficiently cut or severed either in a straight path or in a curved path, depending in which direction the operator moves the work or material over the support. The material being severed by the blade while resting on the support will assure against breaking the parts of the material cut, consequently reducing waste to a minimum. The device can also be employed for trimming edges of the work or material 6 so as to obtain a desired or selected shape 30 to the material.

A punch I2 is mounted on the lever I0 and the bracket 5 has an opening l3 in which the punch may be moved. Whenever it is desired to punch holes in the work or material the latter is placed 5 over the bracket 5 on the support and the lever moved downwardly forcing the punch l2 through the material into the opening of the bracket.

The device described and shown in the drawing is of such a construction that it can be con- 40 veniently carried by a workman and when needed for use can be easily set up on a roof or like place for the purpose of cutting material in parts either with or angularly to the grain of the material and for shaping the material as desired and also 45 for punching holes therein. This device has been found especially useful in the cutting of shingles or other roofing material, however, it may be successfully employed for cutting any other kind of materials.

What is claimed is:

1. A cutting tool comprising an elongated support including relatively spaced parallel plates integrally connected at one end and defining therebetween a knife slot and adapted to have 55 material rested upon the upper edges of said plates, a knife blade having one end pivoted on said plates adjacent their integrally connected ends and adapted to move in between said plates for severing the material supported thereby and including a lever integral with its non-pivoted end and provided with a hand grip, said blade being arcuately curved subsantially from end to end with its convexed edge disposed for leading movement into the knife slot, said blade tapering in width from its leading edge towards its trailing edge and having its convexed edge hollow ground and its side faces hollow ground, a substantially U-shaped bracket connecting said plates and having a punch opening and a punch secured to said lever, angle brackets secured on said plates and acting as rests to aid in supporting said plates on a surface, and an anchor pivoted on said plates to bite into the surface and cooperating with the rests in preventing relative movement of the support on the rests.

2. A slate cutting tool comprising a support embodying spaced parallel plates defining a knife slot therebetween and adapted to hold on their upper edges the material to be cut, and a knife blade of arcuate form pivoted at one end between said plates adjacent one end thereof, the knife blade being of cross-sectionally tapering form with the wider edge constituting the cutting edge which is on the outside of the arc, the cutting edge progressively increasing in width from the pivoted end of the blade to the opposite end thereof.

3. A slate cutting tool comprising a support embodying spaced parallel plates defining a knife slot therebetween and adapted to hold on their upper edges the material to be cut, and a knife blade of arouate form pivoted at one end between said plates adjacent one end thereof, the A

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