US1795203A - Saw guard - Google Patents

Description

March 3, 1931.

w. ESKRIDGE 1,795,203

SAW GUARD 2 Sheets-Sheet 1 Filed June 11, 1930 llorney Patented Mar. 3, 1931 rain AiTiEis PAT entice p .='\VILBUR ESKBIDGE, F LOUISVILLE,.KENTUCKY, ASSIGNOR OE ONE-THIRD TOARTHURF FLEISCHAKER AND ONE-THIBD:TO VINCENT O. PATTERSON, BOTH 0F LOUISVILLE,

KENTUCKY Application filed June 11,

saw for actuation thereby in a mannerto automatically'move the guardto operative and a inoperative position when the saw is in use.

Qther objects-of the invention are to pro- "vide a saw'guard 0f the character described which will be simple in" construction, strong,

' durable, efficient in itsnse, and which maybe manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention twill "become apparent from a study of theifollowing specification, :taken ::in connection iii with the accompanying drawings,*"wherein like reference characters designate corresponding parts throughout the several views, and wherein:

' Figure 1 is a-view in side elevatron'showlng a saw guard constructed inaccord'ancewith this invention mounted inoperative position on a out 01f saw,

so Figure 3'is a fragmentary view initop plan of the guard, I

' Figure 4 1s a vertical:crossisecti'onal' view through the guard,

Figure 5 is a detail view-inrperspective of .;i the linkwhich pivotallyconn'ects the guard tothe actuating mechanism.

Referring to the drawings :in detail, it will be seen that reference numerals 1 designate a conventional saw Vt-able intthe lower por- 40 tion of the supporting structure of which: is

journalled a transverse shaft 2 mounted for oscillatory movement: and having fixed there on engaging'one end anoperatingfoot pedal 3. -Also fixed on an intermediate'portion of 4.5 the shaft 2 is the swingablei'saw supporting frame 41 through the .upp'eriend portion of Y which is rotatably mounted the arbor 5 upon one end portion of which is fixed a saw disk 6 which projects through a slot (not shown) provided therefor in the usual manner in the Figure 2 is a view in frontzelevation there-' i .SAW GUARD 1930. Serial No. 460,473.

1 top of the table 1. Suitable driving mechaper side and at one end ofthe block is a uard of appropriate configuration designate generallyby the reference numeral'll and comprlsing askeleton frame 12 havlng'a forami nous side and top'walls 13,-as best seen in Figure 1 of the drawings, the workor table engaging surfaces of'the frame 12'are' provided With suitable pads 14.

Projecting laterally from oneside "ofithe supporting structure-of the table 1 is stub shaft 15 upon which is mounted for' swin ing movement :an arm 16 to the hubportion of'which isfixed an arm l'i 'whichis disposed atanangle with respect to the arm 16 und 79 has fixed 'on'its free endportion aweight 1.8.

The free end of the'arm 16 isoperativelycom nected to the intermediate portion of the saw supporting frame 4; through-"theunedium of theangular bar 19. A'lever 20 'has' an inter medi'ateportion pivotally connectedto an up- 7 per portion of the table supporting structure --as at 21,- the lower end portion of said lever 20-being operatively connected to the weight 18 for actuation thereby through the medium 80 of-the pin and slot connection 22.

-A longitudinally curved bar 23 is pivotally mounted as at 21for swinging movement on the upperend portion of the-lever 20 'and a standing-ear27 on the frame 12 of the guard An integral stop lug 28 is provided on'the' upper'end portion of the lever 20 for engageinent with the bar 23 in amanner to limit the swinging movement of saidbar Vin-one direc- In use, the'saw 6 is normally housed in'the recessi9 'ofx the block 8. It is understood, of course'; that thesaw is alwaysxreturned to the 1 position by the weight, when the saw is housed in the block 8, the guard 11 is in raised or inoperative position. The work is then positioned on the table 1 in the usual manner and the operator depresses the foot pedal 3 on the raised position toward the position illustrated to advantage in Figure 1 of the drawings. The saw is thus swung outwardly from the block 8 into engagement with the work and the guard 11 simultaneously starts to swing downwardly.

The guard 11 will have reached its lower most position before the saw reaches the limit of its forward swinging movement through the medium of the pin and slot connection 22 but after the cutting operation has been completed. When the operator releases the foot pedal 3, the weight 18 will gravitate toward a vertical position from the position illustrated in Figure 1 and the saw is thus returned to its position within the block 8. The pin and slot connection 22 permits an initial movement of the saw (5 before the guard 11 begins to move upwardly. It will further be apparent that the pivotal connection 24 and the stop lug 28 will permit an initial swinging movement of the lever 20 with the weight 18 before said bar n3 will begin to swing with the lever 20 to raise the guard 11.

It is believed that the many advantages of a saw guard constructed in accordance with this invention will be readily understood, and although the preferred embodiment of the invention is as illustrated and described, it is to be understood that changes in the details of construction may be had which will fall within the scope of the invention as claimed.

What is claimed is:

1. The combination with a saw table and a swinging saw frame having a saw rotatably mounted thereon and a stationary housing mounted on the table for the reception of the saw in its inoperative position, means for manually swinging the saw to operative position out of the housing, a gravity actuated weight mounted for swinging movement and operatively connected with the saw frame for returning the saw to inoperative position in the housing, a guard hingedly mounted for swinging movement on the housing for disposition over the saw when said saw is in its operative position, a lever mounted for swinging movement on the table and having a pin and slot connection with the weight for actuation thereby, a bar hingedly mounted on the lever, a link pivotally connecting the bar to the guard in a manner to swing said guard to operative and inoperative position upon actuation of the lever, and means for limiting the swinging movement of the lever and the bar relative to each other in one direction.

2. The combination with a saw table and a swinging saw frame having a saw rotatably mounted thereon and a stationary housing mounted in the table for the reception of the saw in its inoperative position, means for manually swinging the saw to operative po sition out of the housing, a gravity actuated weight mounted for swinging movement and operatively connected with the saw frame for returning the saw to inoperative position in the housing, a guard hingedly mounted for swinging movement on the housing for disposition over the saw when said saw is in its operative position, a lever mounted for swinging movement on the table and having a pin and slot connection with the weight for actuation thereby, a bar hingedly mounted on the lever, a link pivotally connecting the bar to the guard in a manner to swing said guard to operative and inoperative position upon actuation of the lever, a stop lug on the lever engageable with the bar in a manner to limit the swinging movement of said bar in one direction, and resilient means connected with the bar for yieldably urging the same toward the stop lug.

3. The combination with a saw table and a swinging saw frame having a saw rotatably mounted thereon and a stationary housing mounted on the table for the reception of the saw in inoperative position, means for manually swinging the saw to operative position out of the housing, a stub shaft extending from the table structure, an arm mounted for swinging movement on the stub shaft, another arm fixed to the first named arm and extending at an angle therefrom, a gravity actuated weight on the free end portion of the second named arm, an angular bar operatively connecting the swinging saw frame to the first named arm, said bar, the arms and the weight constituting gravity actuated means for returning the saw to its inoperative position within the stationary housing, a lever pivotally mounted intermediate its ends on the cable supporting structure and having a pin and slot connection with the weight for actuation thereby, a longitudinally curved bar mounted for swinging movement on one end of the lever, a stop lug on said one end of the lover engag-eable with the bar in a manner to limit the movement in one direction and for connecting said bar for movement in unison with the lever, a coil spring connected to the stop lug and the bar in a manner to yieldingly urge said bar toward the stop lug. and a link pivotally connecting the bar and the guard together in a manner to swing the guard to operative and inoperative posit-ion upon actuation of the lever.

In testimony whereof I affix my signature.

WILBUR ESKRIDGE.

Images