US848812A - Bevel-board-cutting machine. - Google Patents

Description

'PATENTED APR. 2, 1907.

J. P. CROWLEY. BEVEL BOARD GUTTING- MACHINE.

APPLIOATION FILED APR. 37, 1905.

TTORNE Y.

UNITED STATES MM M mMH V PATENT orrrcnj JOHN P. CROWLEY, OF NEWPORT, KEZITUCKY, ASESlGNOR TO THE CRAWLEY BOOK MACHINERY COMPANY,

A CORPORATION OF KENTUCKY.

.BEVEL-BOARD-CUTTING MACHINE.

Specification of Letters Patent.

Patented April 2, 1907.

Application filed April27. 1905. Serial No. 257,6l0.

To all whom, it may concern.-

Be it known that 1, JOHN P. CROWLEY, a citizen of the United States, residing at New port, in the county of Campbell and State of Kentucky, have invented new and useful Improvements in Bevel-Board-Cutting Machines, of which the following is a specification.

My invention relates to improvements in bevel-board-cutting machines for beveling the edges of photo-mounts, tar and straw boards for book-covers, and the like, and is in the nature of an improvement on such ma-. chines as that invented by Messrs. Christie and Keck, as set forth in Letters Patent No.

422,726, issued March 4, 1890, or other machines for the same purpose employing a circular rotating knife to do the cutting.

My improvement is a grinding attachment normally out of contact with the knife, but adapted to be brought into grinding contact with the beveled edge thereof at will without removing the knife or unbelting the machine.

It is apparent that much time will be saved and the annoyance and danger of injury to operator and kn ife incident to handling such a part in cramped quarters avoided; but there is the added advantage of keepng the knife a true circle, no matter how much worn, for the shaft on which knife rotates and that on which grinder rotates are fixed in the housing. Consequently they are always the same distance apart.

My invention is illustrated in the accompanying drawings, in Which Figure 1 is a side elevation of a rotary bevel-board cutter equipped with my grinding attachment with parts broken away to show operative mechanism. Fig. 2 is a section through the grinder-shaft and sh fter mechanism. Fig. 3 is a section through the grinder.

A represents the machine housing, to which is cast or attached prolongation of base A and grinder-mechanism housi 111g A.

T o the main shaft B, driven by tight pulley C and provided with loose pulley C, is rotatively attached the feed-roll D, t if one is used,) also the gear I), which meshes with the gear 6, rotatively attached to the knife-shaft E, to one end of which shaft knife F is rel- I atively attached, so that knife and shaft are concentric.

At a convenient point on shaft B is rotal tive'ly attached the gear I), which is adapted to mesh with the gear g, which is rotatively attached to the grinder-shaft G. At a point i on the sh. ft G adjacent to the knife F is rotatively attached a circular grinder H, of emery or like abrasive substance. Grinder H and shaft G are concentric. Grinder H is pref rably cup shaped and beveled outwardly on its outward side, so as to operatively contact with the beveled edge of the knife. Upon the shaft G and rotatively atconvenient way between bearings 01 and a is placed a sleeve 1, with annular groove i, adapted to receive stud-roll This studroll rotates upon stud j, which is securely attached to the hand-lever J. Hand-lever J is pivoted to the housing A or a boss 0/. thereon by pin Upon the shaft Gbetween the bearing a, and the sleeve I is placed a coiled spring K. When grinder is in position for use, as indicated by H, spring K is compressed. Then gear g is in mesh with gear b, transmitting rotary motion to the grinder. When grinder is ir the position it would normally be held by action of spring K, (said position. indicated by ll,) the grinder is out of contact with the knife and not rotating, for gear 9 is not in mesh with gear 6 but is in the position indicated by g. If preferred, gear 9 may be elongated, so as to always be in mesh I with gear I), and in which case either of gears l g or b may be normally loose upon its shaft and provided with a clutch to bring it into 1 rotative relation with its shaft.

The operation of my invention is as fol lows: When the feed-roll or knife are still or rotating slowly and it is desired to sharpen the knife, press the lever J, then in position indicated by J, toward the grinder, coml pressing springK, bringing gear 9 from position g into mesh with gear I) and grinder H l fron. position. H into contact with the knife '1 F. Stud and roll will have been advanced from their positions j and j, respecl tivcly, shown in dotted lines to those shown 5 in full lines.

I claim as my invention and desire to secure byLetters Patent of the United States- 1 ln'combination with a machine having 1 a re olving disk cutter for cutting beveled cdg s on boards, a rotary grinder whose tached thereto by setscrew i or in any other plane is parallel with the plane of the cutter, to engage the sleeve, I, and suitable mechanmeans for holding said grinder out of contact ism for driving the gear, 9, substantially as With the cutter, means for bringing said set forth.

grinder into contact with the cutter, and In, testimony whereof I have hereunto set 15 While in such contacting position independl my hand in presence of two subscribing Witent means for rotating said cutter. nesses.

2. A grinder for revolving cutters coniposed substantially of the beveled rotary grinder, H, the spring, K, the sleeve, I, and Witnesses:

the gear, g, all mounted on the shaft, G, the NORA B. MURPHY,

lever, J, with its stud, 3' and roll, adapted JOSEPH R. GARDNER.

JOHN P. CROWLEY.

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