US1054288A - Guard for band-saws. - Google Patents

Description

S. FLEMING. v GUARD FOR BAND SAWS.

APPLIOATION FILED JULY 17, 1912.

Patented Feb. 25, 1913 UNITED sir-Arias PATENT OFFICE.

SMITH FLEMING, SEATTLE, WASHINGTON, ASSIGNOR F ONE-HALF 'TO GARWbOD N. SHELDON, OF SEATTLE, WASHINGTON.

GUARD FOR BAND-SAWS.-

Specification of Letters Patent. Patented Feb. 25, 1913.

Application file'd- July 17, 1912.. Serial No. 709,888.

To al l'whom it may concern.

Be it known that I, SMITH FLEMING, a citizen of the United States, residing in Seattle,in the county of King and State of Washington, have invented certain new and useful Improvements in Guards for Band- Saws, of which the following is a specification.

saw from running off the band wheels and dropping down upon the operator. By reason of these improvements the operator may get not only his hands but also his head close to the work without danger.

In carrying out my invention I provide a metallic trough-shaped or flanged guard of such width as to receive the saw between .its flanges and 'of such length as to reach from the lower to the upper'guide, and which is provided with a slotted arm enabling it to be readily connected w th the lower guide and with a holder by which it may be connected with the upper guide. The upper end of the guard extends a short distance above the upper guide and is bent forward so that should the saw break, its teeth will not engage the upper edge of the guard. The upper portion of one of the flanges is cut away so that the upper band wheel may clear the guard when the latter 15 adjusted upwardly toward the periphery of the wheel.

In the accompanying drawings, Flgure 1 is a perspective view showing so much of a band-sawing machine, with my mprove-- ments applied, as is necessary to illustrate my invention. Fig. 2 is a detail view 1n s de elevation showing the manner of attaching the guard to the guides. Fig. 3 shows a transverse section on the line 3-3 of Flg 1. Fig. 4 shows a transverse section on the line 4-4 of Fig. 1. Fig. 5 is a detail view partly in section and partly in elevation showing the relation of the band wheel, the guards and the upper guide. Fig. 6 is a perspectlve View of the upper end of the guard.

My improvements may be applied to the band-sawing machines of the usual klnd,

orin fact to any standard machine of this class. I have shown them applied to a machine in which the band-saw runs verticallv over upper andlower bandwheels through a table and has upper and lower guides both above the table.

In Fig. l, A indicates the upper band wheel, B the table, and O the saw which 0perates through a slot 7) in the table.

D indicates an arm of the frame which is formed on its outer end with a guide (1 for a vertically adjustable bar E which may; be held in position when vertically adjusted, by a set screw (3. The bar E carries near its upper end a saw guide F of well known con;- struction and at its lower end it carries a lower guide G, also of known form.

The construction of the-upper and lower saw guides need not be'described as they form no part of this invention. It will be understood, however, that the lower guide is adjustable vertically to and from the table to accommodate work of different thicknesses in the usual way.

A guard H, of well known form, is attached to the upper guide near the upper band wheel and this. protects the operator to some extent, but there is great danger of injury to the operator by that portion of the saw between the upper and lower guides. Often the operator being intent on the work will not only place his hands. but also his head, near the saw between the upper and lower guides, and many accidents have happened on this account. In order to avoid this, I have provided the guard M which is provided with means for readily attaching it to the upper and lower guides and which, in practice. shields the operator and prevents injury. The guard is trough-shaped. 2'. 6., it has a middle portion In and two parallel flanges m. m at the edges of the middle portion. The upper part of one of the flanges is cut away as indicated at m in order to clear the band wheel when the guard is adjusted to such an extent as to approach the band wheel. The upper portion of the guard is bent or turned outwardly in order that should the saw break, its teeth will not come in contact with the upper edge of the guard. I provide'the guard near its lower end with an arm N formed with a slot n which receives the set screw g forming part of the lower guide. By merelv slipping the arm on the screw behind the head thereof and tightening the screw the connectionbetween the guard and the lower guide may be quicklv made. In some cases'the screw g is on the opposite side of the saw and when this is the case an 'arm N may be attached to "-the opposite side of the guide. In Fig. 2

holes a are shown-in the flange m which -may be used for this purpose. Preferably the. arm N is made in a separate piece as above described, being riveted or otherwise secured to the guard in any suitable way.

P indicates a holder for the guard which is attached to the upper saw guide. It con- 1 sists of a piece of sheet metal having a midp which fits on the bolt h or head thereof. It is obvious that the attachmentof 'the dle portion 29 and flanges p, 29 between which the guard is arranged The holder P is not secured tothe guard but is attached to the saw guide F by the bolt h which secures the guard .H to the saw guide. Preferably the flange 79 is formed with. a slot or recess 7 guard to the upper and lower gu ides may be quicklv made, and when this 1s don the parts appear as shown in Fig. 1, the saw be- 111g housed in the guardbetween the upper and lower'guides, and all danger of injury to the operator being avoided.

The guard interferes in no way with the usual adjustments of the guides. The holder P permits the guard to move Vertically freely correspondingly with the vertical ments of the lower guide.

v I claim as myinvention:

1. A trough-shaped guard for band-saws having a laterally projecting arm on its a adj list-- lower end adapting it to be attached to the lower guide of a, band-saw androvided near its upper end with a holder a apted to be attached to the upper saw guide.

'2. A. trough-shaped guard for band-saws having a laterally projecting arm near its lower end adapting it to be'attac'hed to the lower guide of a bandsaw having its upper 1 which connects it with the 'upper guide but permits the guard to move vertically rela-.

tively to the upper guide.

V .In testimony. whereof, I have hereunto subscribed my name.

I SMITH FLEMING.

Witnesses F. N. WEYANT, A. H. GROUT.

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