US768663A - Ripping-saw protector. - Google Patents

Description

PATENTED AUG. 30, 1904.

J. A. JACKSON.

RIPPING SAW PROTECTOR.

APPLIOATION FILED NOV. 18. 1901.

2 SHEETS-SHEET 1.

NO MODEL.

Lil-masses haw i z z'a 2/223 No. 768,663. PATENTED' AUG. 30, 1904.

J. A. JACKSON.

RIPPING SAW PROTECTOR.

APPLIOATION FILED NOV. 18, 1901.

N0 MODEL. 2 SHEETS-SHBET 2.

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FFICE.

PATENT JESSE A. JACKSON, OF OAKLAND, CALIFORNIA, ASSIGNOR OF ONE-THIRD TO D. V. DEUEL, OF OAKLAND, CALIFORNIA.

RIPPING-SAW PROTECTOR.

SPECIFICATION forming part of Letters Patent No. 768,663, dated August 30, 1904.

Application filed November 18, 1901. Serial No. 82,8005 (N0 model.)

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Be it known that I, J user. A. J AOKSON, a citizen of the United States, and a resident of Oakland, county of Alameda, and State of California, have invented certain new and useful Improvements in Ripping-Saw Protectors; and I do hereby declare the following to be a full, clear, and exact description of said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

My invention relates particularly to a protector for ripping-saws; and it consists to provide a series of independent movable teeth secured thereon and of automatic adjustable horizontal means, and further consists in the construction and arrangement of its various parts, as will be more fully described hereinafter.

The object of my invention is to produce a simple and convenient device adapted to be applied to any ordinary-constructed rippingsaw, reference being had to the accompanying drawings, which form part of the following description, in which Figure 1 represents a side elevation of an ordinary ripping-saw provided with my improved protector in position. Fig. 2 is a front end elevation of Fig. 1. Fig. 3 is a perspective view of my improved protector broken away, showing particularly the movable teeth secured thereon. Fig. 4 is a sectional view of Fig. 3, showing particularly the working of the movable teeth. Fig. 5 is a longitudinal section of my improved supporter whereby the protector can be automatically adjusted horizontally, and Fig. 6 is a cross-sec tion taken from line 1 to 1 of- Fig. 5.

Similar letters refer to similar parts throughout the drawings.

The frame A, with its table B, the circular saw C, and the adjustable guide a, constitute a completed ordinary ripping-saw upon which my improved protector is mounted. This protector consists of a metallic plate D, of sufficient length and width and bent correspondingly to the diameter of the saw, above which it is secured.

The forward end 6 and the rear end 0 of the plate are preferably curled outwardly and inwardly, so that in operation the lumber could slide easily beneath. The rear end, however, is thus curled particularly for ornamentalpurposes, while the forward end provides suitable means to secure the movable teeth (Z, which are held in position by means of shaft E, placed within the aperture formed along the width of the plate at the extreme end of the inward curl. These teeth are preferably made angular in shape and have a sharp end dropping downward beneath the plate, while the other end is round, corresponding with the shape of the curled end of the plate, and sufiiciently broad to provide a central aperture corresponding in diameter to the size of the shaft E, to which they are secured independently to each other within the slots F, cut lengthwise through the plate, and at its extreme curled end, as particularlyrshown in Figs. 3 and 4.

The slots are made long enough toward the ends of the plate to allow the teeth to move backward out of the way and to slide upon the lumber G while passing beneath the plate until its rear end is reached, where the teeth drop out and rest perpendicularly against the shoulder a, as particularly shown in Fig. A. Thus in this manner if the lumber happens to move; backward the sharp end of the teeth will naturally stick fast into the wood and prevent thereby any further movements, and the same result can be obtained while the teeth rest perpendicularly against the shoulder e. The number of teeth is immaterial; but it is preferable to be sufficiently large to cover lumber of various widths without readjustment. i

The plate D is secured above the rippingsaw by means of a horizontal automatic support H. This support consists of a cylindrical shell having a narrow longitudinal slot f cut through its lower side. Within the shell and corresponding with its inner diameter is a solid block g, which is provided with a projection 7L, adjusted within the slot just mentioned and projecting downwardly. Against the projection just mentioned the plate D is secured crosswise by means of suitable bolts, as shown in Figs. 5 and 6.

The block g is adapted to slide freely within the shell and kept in position by means of a coiled spring I, placed between the block and the forward end of the shell, which forces constantly the block toward the rear end. Its movements, however, are controlled by the action of the adjustable guide a, which may be forced against the adjacent side of the plate D, as shown particularly in Fig. 5, thus moving and adjusting horizontally the plate I) according to the width of the lumber to be ripped. The rear end of the shell is reduced in diameter, as shown in Fig. 5, and secured to the vertical adjustable bracket J, mounted upon the table B, as shown in Figs. 1 and 2, and provided with a screw and hand-wheel 2T, secured to the bracket for controlling its V61 tical adjustment.

I am aware that various changes can be made in the construction and shape of my invention without, however, affecting its scope, and, believing I have produced novel and useful improvements in ripping-saw protectors and having described the same,

What I claim, and desire to secure by United States Letters Patent, is

1. In a ripping-saw protector consisting of a bow-shaped plate bent outwardly at one end to form a support, a series of slots out upon said support in combination with movable teeth secured within said slots, substantially as set forth and for the purpose specified.

2. In a ripping-saw protector consisting of a bow-shaped plate, having a series of slots cut lengthwise thereon, in combination with independent movable teeth secured within said slots, substantially as set forth and for the purpose specified.

3. In a ripping-saw protector having a bowshaped and an outward and inward curled forward end, in combination with movable teeth secured to the inward curl, substantially as set forth and for the purpose specified.

4:. A ripping-saw protector consisting of a horizontally and vertically adjustable bowshaped plate, bent outwardly at its forward end, in combination with a series of independent teeth secured thereon, substantially as set forth and for the purpose specified.

5. In a ripping-saw protector consisting of a metallic plate, provided at one end with an upward support, slots out upon said plate, and the support, in combination with independent teeth secured to said support by means of suitable shaft, and adapted to move freely within said slots, substantially as set forth and for the purpose specified.

6. A ripping-saw protector consisting of a suitable plate provided with a series of independent teeth mounted thereon, in combination with automatic adjustable means controlled by the position of the lumber-guide of the ripping-saw for adjusting said plate horizontally, substantially as set forth and for the purpose specified.

7. In a ripping-saw protector a horizontally-adjustable support, consisting of a cylindrical shell having a movable block secured therein, in combination with a bow-shaped plate secured to said block and provided with a' series of independent teeth secured thereon, said support being controlled by the position of the lumber-guide of the ripping-saw, substantially as set forth and for the purpose specified.

. 8. In a ripping-saw protector, abow-shaped plate curled outwardly at its forward end and having a series of independent teeth mounted. upon the curled end, in combination with a horizontal support for said plate, consisting of an automatic adjustable block secured within a vertical]y-adjustable cylindrical shell,said block depending in its adjustment on the position of the lumber-guide of the ripping-saw,

substantially as set forth and for the purpose specified.

7 9. A ripping-saw protector consisting of a bow-shaped plate curled outwardly at its ends and having a series of independent teeth se cured thereon, in combination with a horizontal support consisting of a cylindrical shell, provided with automatic adjustable block secured therein and to said plate, said block depending in its adjustment on the position of the lumber-guide of the ripping-saw, substantially as set forth and for the purpose specified.

10. A ripping-saw protector consisting of a suitable plate provided with horizontal adjustable support consisting of cylindrical shell having a longitudinal slot, amovable block socured within said shell and projecting through the slot and means to move said block, said block being limited in its movement by the engagement of the protector with the lumberguide of the ripping-saw, substantially as set forth and for the purpose specified.

In testimony whereof I have afiixed my signature, in presence of two witnesses, this 3d day of October, A. D. 1901.

JESSE A. J AGKSON.

In presence of- E. P. VAUGHAN, A. S. PARIt.

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