US1374331A - Saw-guard - Google Patents

Description

F. STINES.

SAW GUARD.

APPLICATION FILED MAR. I8, 1919.

Patented Apr. 12, 1921.

UNITED STATES FRED STI'NES, 0F NEWTON, IOWA.

SAW-GUARD.

Specification of Letters Patent.

Iatented Apr. 12, 1921.

Application filed March 18, 1919. Serial No. 283,409.

T o all whom it may concern:

Be it known that I, FRED SrrNns, a citizen of the United States, and a resident of Newton, in the county of Jasper and State of Iowa, have invented a certain new and useful Saw-Guard, of which the following is a specification.

The object of my invention is to provide a saw guard of simple, durable and inexpensive construction.

More particularly it is my object to pro` vide a saw guard having a vertically slidable member so constructed as to be capable of being swung laterally away from the saw, which vertically slidable member has saw guard members pivoted at its lower end.

Still a further object is to provide on one side of said last saw guard members a means for preventing the stock from kicking back.

l/Vith these and other objects in view my invention consists in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in myclaim and 1 illustrated in the accompanying drawings,

in which:

Figure 1 shows a side elevation ofv a saw guard embodying'my invention.

Fig. 2 shows a front elevation of the same.

Fig. 3 shows a vertical, sectional view` taken on the line 3--3 of Fig. 2.

ed for rotation below the table and projects A upwardly through a slot in the table in the ordinary way.

Above the table is shown a support 12 on which is a downwardly extending supporting member 13 preferably of tubular form.

Braces 15, 16 and 17 are provided for the supporting member 13.-

It will be noticed that the braces are inclined away from the member 13 in such ar way as not to interfere with the operation of the parts as hereinafter described.

Rotatably mounted on the lower end ofthe supporting member 13 is an ordinary T- fitting 18 which receives and is fixed to a bushing 19.

,j The bushing 19 projects below the itting 18 and is provided in its lower surface with opposite slots 20. Y

Extended through the lower end of the supporting member 13 is a pin 21. In one position of the rotation of the T-fitting the pin 21 is received in the slot 20.

Extending laterally from the T fitting 18 is a piece of pipe 22 on the outer end of which is another T-fitting 23 in which the upright pipe 24 is slidably but non-rotatably mounted.

The pipe 24 is provided with a slot 25 and a key 27 is extended through the wall of the T-iitting 23 and into the slot 25, as illustrated in Fig. 5.

etween the upright pipe 24 and the T- iitting 28 is a bushing 28'which has a slot registering with the slot 25 through which the lkey 27 extends, as shown in Fig. 5.

The set screw 29 extends through the wall of the T-fitting 23 and the bushing 28 and is designed to lock the upright pipe 24 in various positions of its vertical adjustment.

Mounted in the lower end of the pipe 24 is a short shaft 30 having at its lower end a downwardly opening U-shaped yoke 31, clearly shown in Figs. 3 and 4.V

Pivoted between the arms ofthe yoke 31 are two saw guard members extending in opposite directions from the yoke 31 and comprising downwardly opening channels 32 and 33.

The saw guard member 32 is provided with a pair of ears 34 which extend to position between the arms of the yoke 31 and are pivoted on a bolt 35 mounted in said arms.

On the saw guard member 33 is a bearing '36 received between the ears 34 and pivotally mounted on a bolt 35.

At the lower portion of the arms of the yoke 31 are inwardly extending lugs 37 which limit the downward swinging movement of the saw guard members 82 and 38. The walls of the channels of the saw guard members 32 and 33 are provided with notches 38 to receive said lugs, as illustrated in Fig. 3.

At the outer end of the saw guard member 32 is an upwardly and outwardly extending arm 40.

At the outer end of the saw guard member 'does not interfere in any way with the ma is a smooth dat surface on which is mounted a plate dl having a toothed lower edge 4K2. T he plate l1 has elongated slots 43 through which are extended ,screws lll mounted in the saw guard member By the construction just shown the plate il may i be adjusted.

ln the practical operation of my improved' saw guard, the parts are assembled moved to the position shown in Figs; and-.12. The upright pipe 2d is then Tveiiiically adjusted and locked by means oi' the vset screw 29 at suoli a height as to permit the work,

Vsuch as that indicated at by dotted lines in Fig. l, to be readily shoved under the saw guard members 32 and The pins 2l and slots 20 and the slot 25 are so located as to hold the' saw guard members 33 and 32 in proper position above the saw, as illustrated in Figs. l and 2.

The work is then shoved in under the ai'ni 4K0, which is so inclined to permit the work to raise the saw guard member 32 readily. l

V As the work is moved along the vtable l0 and is sawed, it will raise the saw guard member 33 so that the saw guard vmembers 32 and 33 will Vrest -on top of' the work. as

illustratedby dotted linesiin l.y y

lt will thus be seen that the saw. guard Furthermore if a piece should be broken out of the saw it cannot be thrown so as to strike the workman.

Y@ne accident that occurs with undesirableY frequency in a planing` mill or other place where wood is sawed, arises from the l'act that the saw will sometimes strike a knot in the wood or the wood will bind on the lsaw tending to cause the wood to rise up with the teeth or' the saw and then ride along the ioints oi? the teeth causing it to be thrown from the saw with considerable torce. throwing or the wood is called a kick back and is preventedA with my saw guard by the downwardly inclined arm 33 having the Y plate el with serrations l2 at its end.

lt will be noted that when `desired `the upright 24 may be raised until the notches arecleai' oil the pins 2l and swung` around on the supporting' member 13 to position shown by dotted lines in F 2 where it will be readily out oi the way.

lt will be noted also that the npr. is supported on the member 13 outsid vertical plane in which the saw rests. y

This is desirable for the reason th at sometimes a long piece or' wood is sawed the end and the 'wood will entend upwardly a io'ht 2l e ci the considerable distanceB and it is desired that Y l the guard mechanism be out ci the way when the 'wood is sawed in the manner just described. Y

y Lguard is oli very simple and inexpentages including` those mentioned above.

Some changes may be made in 'the con* struction and arrangement of the iv'arions parteci:V my improiv'edwdevice wit-hout departingV from the essential spirit or my iiirention, and it is my intentionto cover by` my claimany modified forms of structure. or

use or mechanical equivalents which may be included within their scope.` l claim als my invention:

.ln a` saw guard structure, an upright member having; formed at the lower end thcreoie a downwardly opening` U-shaped yoke, the arms oi' said yoke haring' at their lower portions vinwardly projecting lugs, sawguard members comprising downwardly opening channel-shaped members each pro vided at its upper portion with a bearing receiife'd between the arms of said yoke and projectingaway 'from the body of the saw ,Ouai'd member,l Va commonl bolt extended through said arms, aiidthroug'h said bean ings, the walls of said channel-shaped saw i guard members, having notches to receive said lupgs.

Des Moines, Iowa7 February 7. 1919.

' reni) sriuns.

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