US727536A - Cutter-guard for woodworking-machines. - Google Patents

Description

. PATENTED MAY 5, 1903. F. L. FORSTBR. v CUTTER GUARD FOR WOODWORKING MACHINES.

APPLICATION FILED FEB. 2, 1903.

N0 MODEL.

UNrTnn STATES Patented May 5, 1903,

PATENT OFFicE.

FRANK L. FORSTER, OF SHELBYVILLE, INDIANA, ASSIGNOR OF ONE- HALF TO JACOB A. CONREY AND MARY CONREY, OF SHELBY- VILLE, INDIANA.

CUTTER-GUARD FOR WOODWORKING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 727,536, dated May 1903- Application filed February 2, 1903. Serial No. 141,492. (No model.)

To all whom, it may concern.-

Be it known that I, FRANK L. FORSTER, a citizen of the United States, residing at Shelbyville, in the county of Shelby and State of Indiana, have invented new and useful Improvements in Cutter-Guards for Woodworking-Machines,of which the followingisaspecification.

My invention relates to improvements in guards for the cutters of woodworking-machines of that type which are provided with vertically disposed cutters which project above the surface of a work-table; and the object of the invention is to provide a guard for vertically-disposed cutterswhich can be ad 3' nsted vertically, lengthwise, and laterally, so that the guard may be used with work of diiferent thicknesses and to suit cutters of different diameters, suchguard being springsupported to give vertically and adapt itself to inequalities in the thickness of the work as it is passed beneath the guard to be engaged by the cutter.

The invention consists in the construction and combination of the parts, as will be hereinafter set forth, and specifically pointed out in the claims.

In the accompanying drawings,which illustrate one embodiment of the invention, Figure 1 isa perspective view showing the cutter-guard applied to a work-table, through which passes a vertically-disposed cutter. Fig. 2 is a detail view, partly'in section, showing one way of connecting the guard to the work-table; and Fig. 3 is a sectional view on the line 3 3 of Fig. 1.

In practice the table A is provided on one side of the cutterB with a rectangular opening, through which is passed one end of a standard G,the lo'werend thereof being threaded to receive a nut'o for drawing the shoulder 0 against the face of the table, and thus maintain the standard in a vertical position. The standard C carries a vertically-adjustable bar D, said bar having anopeningd and a thumbscrew d for clampingthe bar where positioned on the standard. The bar D on each side of the center has therethrough slots D D, the parts of the bar alongside of the slots gaged by the cutter.

being overlaid by spring-bars E E. The bars are connected adjnstably by bolts d and thumb-nuts, as shown.

The spring-bars E E, which are clamped to the bar D, have slots E E and carry angular depending parts F F, the outer edges thereof being rounded to admit freely the material which is passed under the guard to be en- The parts F F, which are similar in construction, have end portions F F, which project one toward the other and overlap, they being held in frictional engagement by a clamp screw g, which passes through a slot in the upper portion of an angular block G, attached or formed on one ofthe end portions, the screw entering the part whichlies between the depending portion of .theangular block and the part which carries theblock.

A guard constructed as shown may be adjusted vertically on the standard to place the spring-bars and parts carried thereby at the desired height above the top of the table, and the guard may also be adjusted both longitudinally and laterally to encircle cutters of different sizes. The main supporting-barD can be clamped to the standard otherwise than shown to accomplish the same result, andthe depending portions which engage the work may be formed integral with the slotted spring-bars E E, which bars will give when there is any material variation in the thickness of .thewood which is passed under theguard to be engaged by the cutter. In practice the guard is adjusted so that it will bear upon the work and hold the same against the table. The flat and horizontally-supported bars permit a vertical movement of the guard and prevent any movement of said guard to and from the bits attached to the cutter-head, and as the supporting-bars are maintained horizontally above the plane of the table they will not to any great extent retain chips.

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

1. In a guard for the cutter of Woodworking machines the table thereof having a vertical standard, a slotted supporting-bar adjustabl y secured to the standard, spring-bars having engaging portions carried by the spring-bars longitudinal slots therethrough, means for said depending portions having end members adjustably connecting the spring-bars to the which parallel each other and are adjustably 15 supporting-bar, depending work engaging connected, for the purpose set forth.

5 parts carried by the spring-bars, and means In testimony whereof I have signed my for adjustably connecting the Work-engaging name to this specification in the presence of parts to each other, substantially as shown. two subscribing witnesses.

2. In a cutter-guard for woodWorking-machines the combination of a Vertical support, FRANK T 1 o a vertically-adj nstable bar having slotted end Witnesses:

portions, spring-bars adjustably connected to HARRY S. DOWNEY,

the vertically-adj ustable bar,depending work- ELISE SCHROEDER.

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