US1154209A - Saw-guard. - Google Patents

Description

J. L. RUSHTON.

SAW GUARD.

APPLICATION FILED AUG. 11. 1914.

PatentedSept. 21, 1915.

Z SHEETS-SHEETI COLUMBIA PLANOORAPH CO.,WASHINGTON, D. c.

J. L. RUSHTON.

SAW GUARD.

APPLICATION FILED AUG. H, 1914.

1,1 54,209. Patented Sept. 21, 1915.

2 SHEETS-SHEET 2.

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JOHN L. RUSHTON, OF MUSCATINE, IOWA.

SAW- GUARD.

Application filed August 11, 1914.

To all whom it may concern:

Be it known that 1, JOHN L. RUSHTON, a citizen of the United States, residing at Muscatine, in the county of Muscatine and State of Iowa, have invented certain new and useful Improvements in Saw-Guards, of which the following is a specification.

This invention relates to an improved saw guard which is intended to be used in connection with circular saws, and the principal object of the invention is to provide a saw guard which will completely cover the saw, thus preventing danger of the operator being cut, the guard being so constructed that it may be used when sawing lumber of any thickness through which the saw will pass.

Another object of the invention is to so mount the guard that it may slide longitudinally on its frame or traclr when a piece of lumber is being cut, a spring being provided to return the guard to its normal position after a board has been cut and yieldably hold the guard in the position to cover the saw.

This invention is illustrated in the accompanying drawings, wherein:

Figure 1 is a view in elevation showing the guard in place. Fig. 2 is a top plan view of the guard. Fig. 3 is a longitudinal sectional view through the guard taken along the line 33 of Fig. 2. Fig. 4 is a transverse sectional view taken along the line 1 4 of Fig. 3. Fig. 5 is a fragmentary sectional view showing the manner ofslidably connecting the guard with the track, and also the manner of slidably connecting the sections of the guard.

The main tracks 10 and 11 have their rear end portions bent to form standards 12 and 13, which terminate in feet 14 and 15 which are secured to the underface of the sawing table 16 by the bolts or other fasteners 17. It will thus be seen that the main tracks will be suspended in spaced relation above the sawing table and that the tracks extend upon opposite sides of the circular saw 18, which is rotatably mounted by means of its driving shaft 19 and extends through the slot 20 formed in the sawing table. To the side flanges of the main tracks there have been secured strips of angle iron forming auxiliary track sections 21 and 22, which are positioned in spaced relation to the main track sections, thus leaving space'between Specification of Letters Patent.

Patented Sept. 21, 1915.

Serial No. 856,294.

the same, as shown clearly in Figs. 3, 4: and 5.

The guard or housing, which is intended to inclose the saw, is slidably carried by the track and comprises the upper and lower side sections 23 and 2a and intermediate side sectlons 25 and 26, the upper side sections being connected by the cross bar 27, which engages the longitudinallyextending bar 28 carried by the end wall 29 of the housing. The cross bar 27 and the longitudinally extending bar 28 carry angle strips 30 and 31 which fit into the spaces between the main track sections and auxiliary track sections, as shown in Figs. 4 and 5, thus suspending the housing and permitting the housing to be moved longitudinally. In order to yieldably hold the housing in the normal posi tion, there is provided a strong spring 32 which has one end portion connected with the eye 33 carried by the longitudinally extending bar 28, and has its opposite end portion connected with the eye 34 carried by the block or bridge 35 which connects the free ends of the track sections. The rear end portions of these tracks are connected by the bracing bridge 36, as shown clearly in Fig. 2, and it will thus be seen that these tracks will be securely held at the desired distance apart to permit the housing to slide easily without any danger of the supporting strips 30 and 31 slipping from between the track sections.

The side sections 23, 25 and 26 of the housing each carries a strip 37 which has its side portions bent to form flanges 38 positioned in space relation to'the strip. The sections 25, 26 and 24 each has a strip 39 secured to its upper face, which has its side portions bent to form overhanging flanges which form pockets L0 in which the flanges 38 of the strips 37 fit, thus slidably connecting the side sections of the housing and permitting the side sections to move independently without becoming disconnected. It will be noted, however, that when one set of side sections is moved longitudinally by a board which is being cut, the end wall 29 will be moved, thus expanding the spring. The end wall and the longitudinally extending bar 28 will thus be moved to the position inclicated by dotted lines in Fig. 1 without the remainder of the housing being removed from about the saw. Therefore, the upper portion of the saw which extends through the board will not be exposed, and therefore there is no danger of the operator being cut by the saw. 7

When this device is in use, it is mounted as shown clearly in the drawings, and the piece of lumber which is to be cut is placed upon the cutting'table 16 and moved toward the saw from the open end of the housing. As the piece of lumber reaches the housing, it will engage one or more of the side sections of the housing and will cause either the entire housing or only the lower portion thereof together with the rear wall to be moved to the position indicated by the dotted lines in Fig. 1, thus permitting the saw to cut the board. After the board has been cut, the pieces will be withdrawn from the housing by a transverse movement and the spring will then return the housing to the normal position. I have thus provided a saw guard which will completely cover the saw, thus preventing any danger whatever of the operator being cut when the saw is in use, and also when the saw is running but not in use.

What is claimed is:

1. The combination of a sawing table, tracks extending above said table and in spaced relation thereto, a housing slidably carried by said tracks, said housing comprising side walls formed of a plurality of slidably connected sections positioned in superposed relation, an end wall for said housing, a longitudinally extending bar carried by said end wall and resting upon the inner end portions of the upper sections of said side walls, a cross bar connecting the forward end portions of the upper sections of said side walls, and resilient means connecting said longitudinally extending bar with the forward end portions of said track to yieldably hold said housing in a normal position.

2. A. saw guard comprising tracks, a housing slidably connected with said tracks, said housing comprising side walls formed of sections positioned in superposed relation and slidably connected, a cross bar connecting the forward end portions of said side walls, a rear wall, a longitudinally extending bar carried by said rear wall and resting upon the inner end portions of said side walls and engaging said cross bar, and resilient means having one end portion connected with said longitudinally extending bar and its opposite end portion connected Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

4; In a saw guard, a housing comprising 7 side walls formed of a pluralityof slidably connected sections, a rear wall, a cover formed of forward and rear sections, the forward cover section being secured to the upper sections of the side walls and the rear cover section being secured to said rear wall and slidably engaging the upper sections of said side walls, means for slidably mounting said housing, and means for yieldably holding said housing in a normal position.

5. A saw guard including a housing comprising side walls formed of a plurality of sections positioned in superposed relations,

means for slidably connecting the sections.

of each side wall, a rear wall for said hous- 1ng moving with a selected set of the sections of sa1d side walls, means for slidably mounting said housing and means connected with said rear wall for yieldably holding said housing in a normal position.

6. A saw guard comprising a track, a bar slidably connected with said track, resilient means connected with said track and with said cross bar for yieldably holding said cross bar in a normal position, a rear wall connected with. said cross bar, side walls comprising a plurality of slidably connected sections having their inner ends engaging said rear wall, a cross bar connecting the upper sections of said side walls and engaging said first mentioned cross bar, and means for slidably connecting said second mentioned cross bar with said track.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN L; RUSHTON.

Witnesses:

JAMES T. SIssnL, VVTLL VoDEGnL.

Washington, D. G.

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