US456879A - William b - Google Patents

Description

(No Model.)

W. B. BOAZ. TRIMMING MACHINE No. 456,879. Patented July 28,1891;

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UNITED STATES PATENT OFFICE.

YVILLIAM B. BOAZ, F HAMILTON, OHIO, ASSIGNOR OF ONE'HALF TO F. & L. KAHN & BROTHERS, OF SAME PLACE.

TRlMMlNG-MACHINE.

sencmrcarron forming part of Letters Patent No. 456,879, dated July 28,1891. Application filed January 12, 1891. Serial No. 377,561. (No model.)

To a, 1072,0722, it may concern: cutter having a flat front face and having a Be it known that I, W'ILLIAM B. BOAZ, of bevel upon its rear face to produce an acute Hamilton, Butler county, ()hio, have invented peripheral cutting-edge, the lower portion of certain new and useful Improvements in Trimthis cutter projecting below the upper surface 5 5 ming-Machines, of which the following is a of the bed-plate, while the flat face of thecutspecification. ter comes against or very near to the ,rear

This invention pertains to improvements edge of the bed-plate; 9, a gear on the cutterinthat class of trimming-machines employed spindle, gearing with the rack on the guides; by pattern-makers and other wood-workers 10, a handle or crank on the rear end of the 60 IO in trimming miters, butt-joints, and other spindle, by means of which the spindle and edges of pieces of wood by handpower operacutter and gear may be rotated; 11, a ratchet tions. or notched disk fast on the rear end of the My improvements will be readily underspindle; 12, the arm to which the handle stood from the following description, taken in is attached, the inner end of this arm or 65' connection with the accompanying drawings, tongue engaging any selected notch in the in whichdisk 11; 13, the body of the hand-1ever or Figurel is a vertical transverse section of a crank freely journaled on the spindle and machineexemplifyingmyimprovements;Fig. forming a housing for the handle-tongue 12,

2, a front elevation of the same; Fig. 3, a rear which tongue is capable of sliding a trifle rawe elevation of the same, or about half the length dially in the crank-body l3; and 14, a spring of the machine; and Fig. -Il:, a plan showing housed in the crank-body and tending to press about half the length of the machine, the the tongue 12 inwardly, so that its point will hand-lever or crank being omitted from the engage one of the notches of the ratchet-disk. last-mentioned view. By turning the crank the cutter will be ro- 25 In the drawings, 1 indicates the bed-plate, tated, and at the same time the pinion will having a true flat top surface and a straight cause the cutter to be moved along the bedrear edge; 2, a lower guide member disposed plate toward one end of the machine. The to the rear of the bed-plate and parallel with cutter, therefore, has a movement of rotation its rear edge; 3, brackets projecting forwardly and advance, the periphery of the cutter hav- 30 from the guide member and bolted to the beding a rotary movement at higher speed than plate, as indicated in Fig. i, so that the guide its movement of advance. A piece of wood member can be adjusted to and from and laid upon the bed-plate against one of the parallel with the rear edge of the bed-plate brackets and projecting a trifle to the rear of and then firmly secured; 4, a top guide memthe bed-plate in advance of the cutter be- 3 5 her disposed over the lower guide member comes subjected to the action of the rotating and bolted thereto at its ends, the guiding and advancing cutter and slices may be elements being illustrated as of V shaped shaved off of the wood. The action of the cutbearing-section; 5, a cross-head fitted to slide ter is that of a knife-edged toothless saw, the in the guides endwise of the bed-plate, the advance of the cutter serving to feed it along 4o bolting of the top guide member to the lower as the cutting progresses. The work done is one permitting the guideway to be adjusted extremely smooth and free from all splinterto a proper fit upon the cross-head as wear ing, and the machine has a capacity for taktakes place, the cross-head carryingabearing ing surprisingly heavy cuts with smooth rehaving a horizontal axis above the top sursults.

45 face of the bed-plate and parallel with that It is usual in machines of this general class surface and at right angles to the plane of to provide the bedplate with one or more the rear edge of the bed-plate; 6, a spindle fences, against which the wood maybe placed journaled in this cross-head bearing; 7, a rack instead of against the end brackets, as above formed upon the lower guide element, with its mentioned, such fences being adjustable to 5c teeth projecting upwardly; S, a disk-cutter sevarious angles for mitering, &c. Such fences cured to thefront end of this spindle, this may, if desired, be employed in connection member.

with my machine, as indicated in dotted line at 15 in Fig. 4..

For convenience in operation it is desirable that the crank project upwardly within convenient reach of the operators hand. The general position of the crank would be controlled by the width of the piece of wood being operated upon. In order that the position of the crank may in a general way be fixed independent of the width of the work, I arrange the crank to be adjusted around the spindle. This is done by shifting the tongue 12 into a selected notch in the disk 11 in an obvious manner. Wear of the cross-head in the guides is compensated for by readjusting the upper guide member where it is secured by bolts to the structure of the lower guide The guide is adjusted into parallelisrn with the bed plate by shifting the brackets on the bed-plate. I

I claim as my invention In a trimming-machine, the combination, substantially as set forth, of a bed-plate, a guidewayand rack parallel therewith, a crosshead fitting said guide and having abearing, a spindle journaled in said cross-head bearing, a disk-cutter secured to said spindle and having a fiat front face and acutely-beveled periphery projecting below and against the edge of said bed-plate, a gear connected with said spindle and engaging said rack, and a hand-crank connected with said spindle.

ILLIAM B. BOAZ.

NVitnesses:

.T. W. SEE, WM. S. GIFFIN.

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