US225966A

US225966A - Device for facilitating the drilling of mower-cylinders

Info

Publication number: US225966A
Authority: US
Publication date: 1880-03-30
Anticipated expiration: 1897-03-30

Description

J. BRAUIL Device for Facilitating the Drilling 0f'MOWer-Oyl-inders.

Patented Mar. 30,1880.

Fig.2.

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NFEIERS, PHOTOJJTHOGRAPHER, WASHINGTON, D C,

UNITED STATES PATENT FFICE.

JOHN BRAUN, OF PHILADELPHIA, PENNSYLVANIA.

DEVICE FOR FACILITATING THE DRILLING 0F MOWER-CYLINDERS.

SPECIFICATION forming part of Letters Patent No. 225,966, dated March 30, 1880.

Application filed October 10, 1879.

To all whom it may concern Be it known that I, JOHN BRAUN, of the city and county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Devices for Facilitating the Drilling of Cylinders of Mowers, which improvement is fully set forth in the following specification and accompanying drawings, in which Figure l is a side elevation of the device embodying my invention. Fig. 2 is a top or plan view thereof. Fig. 3 is a side elevation of a modification. Fig. 4 is a face view thereof.

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists of a stand for supporting the heads of a cylinder from the centor and lips for guiding drill-rods to the portions of the cylinder-heads to be drilled, whereby the drilling is economically, conveniently, and uniformly accomplished.

Referring to the drawings, A represents a stand or standard rising from a base, B, and having at its upper end an opening or boss, 0, for the reception of the shaft of the cylinderhead to be drilled, and a screw, 0, passing through the boss, for tightening against said shaft.

Adjacent to the standard is supported a lip, D, which projects in such manner that when the cylinder-head is sustained by the standard A the lip extends close to the periphery of said head, and one of the lugs of the head, to which the cutters are riveted, extends under the lip. In the lip are formed openings a a, adapted to permit the entrance of the drillrod employed for drilling the lugs of the cylinder-head.

WVhen the cylinder-head is properly adjusted the screw 0 is turned so as to hold the same securely in position. The drill-rod is advanced through one opening of the lip D, then withdrawn and passed through the other openin g, whereby the lug has formed in it two' holes for the subsequent insertion of the rivets. The screw G is then loosened, and the cylinder drawn from the standard A and rotated and another lug brought under the lip, and the screw 0 again tightened. The drilling operation is repeated and the workcontinued until all the lugs are drilled.

Figs. 3 and 4 show a modification in which a post is substituted for the boss for supporting a head having its shaft disconnected, and I employ a lip, D, for each lug. In this case the drill-rods are arranged horizontally, and each lip is brought successively to them.

It will be seen that by these means cylinderheads may be drilled economically, conveniently, and uniformly.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- The stand A, boss 0, and the perforated lip or lips D, constructed, combined, and operating substantially as and for the purpose set forth.

JOHN BRAUN.

' Witnesses JOHN A. WIEDER-SHEIM, A. P. GRANT.