US1191412A - Guard for sawing-machines. - Google Patents

Description

C. M. GAGE, DEC'D.- I. GAGE, ADMINISTRATRIX sum FOR SAWING MACHINES. APPLICATION FILED AUG- lo, 914' RENEWED DEC- 2% 1915- I 1,191,412. Patented July 18, 1916.

2 SHEETSSHEET I.

Ina 070 f? HZZo r/ze Z C'. M. GAGE, DECD. 1. GAGE, ADMINISTRATRIX. GUARD FOR SAWING MACHINES. APPLICATION FILED AUG-I0. 914. RENEWED 05c. 27. 1915-.

1 1 9 1 ,4 1 2 Patented July 18, 1916.

2 SHEETS-SHEET 2.

"enrrn $211 nnr me.

OREGON, ADMINISTRATBIX OF SAID CHARLES MARTIN GAGE, DECEASEDQ GUARD FOR SAWING MACHINES.

Specification of Letters Patent.

Application filed August 10, 1914, Serial No. 856,094. Renewed December 27, 1915. Serial No. 68,944.

To all whom it may concern:

Be it known that I, GHARLEs M. GAGE, a citizen of the United Stat-es of America, residing at Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful Improvements in Guards for Sawing-Machines, of which the following is a specification.

The present invention relates to improvements in guards for sawing machines, and particularly for edging machines, wherein the operator or attendant is compelled to assume a position while working in proximity to the feed rolls, and is therefore in. danger of injury especially to his hands or arms, and also in danger of having portions of his garments entangled with the feed rolls which often results in loss of limbs and sometimes in loss of life.

The primary object of the'invention is the provision of a guarding device or shield suspended on one of the feed rolls of the edger or edging machine and adapted to move therewith, but at all times preserve its fixed relationship to the machine.

The invention consists essentially in the novel combination and arrangement of parts whereby the shield or guard is suspended or supported in connection with one of the movable feed rolls and in position at all times to maintain its fixed relationship to the rolls.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention constructed according to the best mode I have so far devised for the practical application of the principles of my invention, and which has proven highly successful n actual use.

Figure 1 is an elevatlon of the guard showing pair of feed rolls in connection therewith. Fig. 2 is a side elevation of the guard showing in diagrammatical form the rolls and saw of a standard edging saw machine. Fig. 3 is an enlarged sectional detail view of a portion of the guard and its supporting bracket.

In the preferred embodiment of my invention as illustrated in the drawings, I have shown an exemplifying arrangement of a portion of an edging machine including the front upper pressure or feed roll 1 and lower roll 2, the saw 3 and the rear upper roll 4 with its complementary roll 5, and for convenience of illustration a Wooden strip or board 6 is shown passing through the machlne.

The front upper roll 1 which is vertically movable toadapt itself to and accommodate dlfferent thicknesses of materiah'is supported in the usual manner upon its journals 7 and while I have utilized a sleeve 8 on the journal as a support for the shield or guard 1t Wlll of course be understood that the shield may be supported directly on the journals or if desired may be supported on the roll itself.

H The guard or shield is preferably suspended from the ceiling or upper portion of the framework about the saw mill, but can be attached to the frame of the edger itself, and I have illustrated beams or girders 9 as utilized for this purpose. The guard is composed of a plate 10 either integral with or attached at the end of two hanger arms 11 and 12 and is .located with relation to the sawing machine approximately as shown in Fig. 2. The plate is of metal of considerable weight and thickness in order to withstand rOugh usage encountered fro-m the lumber, and is extended across the front of the upper front roll 1 with its bottom edge just above the lowest point of the roll. The guard is suspended through the medium of its hanger arms 11 and 12 from the rock shaft 13 by means of the rock arms 1&, 15, and the rock shaft is journaled to rock in bearings 16 bolted to the beam or other support. The rocker arms 14 and 15 are each fixed on the rock shaft 13, and may be held in adjusted position on the shaft by means of a set screw or bolt 17, and by means of a bolt 18 each rock arm is pivoted to its hanger arm. It will be understood that the shaft 13 is free to rock or revolve in its bearings 16 to permit elevating and depressing of the guard.

At its lower end back of the plate 10 the guard is provided with a pair of brackets which are similar in construction so that. the description of one will apply to both as will also the reference characters. In each case the bracket is indicated by the number 19, and this bracket is formed with a circular bearing plate 20 which plate is adapted to rest upon the sleeve 8 on the journal 7 as shown in Fig. 2. The bracket is carried by the guard and is adjustably attached thereto by means of bolts 21, 22,

which'are passed'through a slotted and perforated flange 23 of the bracket and a slot and perforation in the guard plate, the respective slots and perforations being indicated by the numbers 24, 25, 26, 27. The bracket is clamped to the guard by means of the bolts 21, 22 and their nuts 23 which hold the bracket in rigid position. By means of a screw bolt 25 threaded in a lug 26 integral with the hanger arm, which bears upon a lug 27 integral with the bracket, the latter may be adjusted closely and with accuracy to a very fine adjustment.

The guard is of strong and substantial construction and is designed with a view to withstanding knocks from the timber or lumber that is being Worked, and as before stated the guard is in position so that it will at all times bear a fixed relation to the feed rolls. Thus, as suspended from the rock shaft by the hanger arms, and supported from the roll by the brackets, the guard is permitted to partake of the movement of the roll 1 as it rises or falls in accommodating itself to the various thicknesses of material. passing through the machine, but the lower edge of the guard plate is always just above the upper face of the lumber and likewise just above the lowest point of the periphery of the roll 1. In this position the guard plate is an efficacious and effective guard or shield against an object being drawn in between the rolls 1 and 2, and prevents the possibility of a hand, arm or garment being drawn into danger relationship with the rolls. The supporting bracket :1

may be adjusted with relation to the guard plate by loosening the bolts, moving the bracket to place and then tightening the nuts, while the screw bolt 25 may be used to accurately gage the ends of the plate with relation to the journals of the roll 1.

From the above description taken in connection with my drawings it is evident that I have provided a device which will be most effective in preventing accidents and injury to the operator 'or attendant, and yet will be out of the way of proper operation of the machine.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is':

The combination with a vertically movable feed roll, of a guard comprising a plate in front of the roll, a rock shaft and a pair of rocker arms thereon, hanger arms suspended from the rocker arms and connected to the plate, and brackets adjustable on the plate having bearing plates for supporting said guard on the movable roll.

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

CHARLES MARTIN GAGE.

Witnesses M. S. WHEELER, J. E. l/VINDLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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