US155431A - Improvement in planing-machines - Google Patents

Description

2 Sheets--Sheet 1 W. H.. DUANE Planing-Machines. No. 155,431. Patented Sept. 29,1874.

I E {gave-later UNITED STATES PATENT OFFICE.

WILLIAM H. DOANE, OF CINCINNATI, OHIO.

IMPROVEMENT IN PLANlNG-MACHINES.

Specification forming part of Letters Patent No. 155,431, dated September 29. 1874; application filed February 6,1874.

To all whom. it may concern:

Be it known that I,WILLIA1VI H. DOANE, of Cincinnati, Hamilton county, State of Ohio, have invented a new and useful improvement in Flooring-Machines, of which the following is a specification:

My invention relates to machines designed to plane the edges of flooring-boards, and cut therein the tongue and groove peculiar to flooring-boarcls; and my invention consists, first, in the provision and combination of three outter-heads, between the central and outer ones of which two flooringboards may be run and out at one and the same time; secondly, in a peculiar construction and arrangement of the gear-wheels, by which the expansible rolls are driven, that permits wheels of larger diameter than the diameter of the feed-rolls to be used; thirdly, in such a con struction of the upper feed-rolls and their elevating devices that the central journals of these upper feed-rolls are independent and adapted for separate vertical movement, so

l that two boards of unequal thickness can be fed properly.

Figure l is a perspective view of a machine embodying my invention. Fig. 2 is an elevation of the expansihle-roll gear-wheels. Fig. 3 is an elevation of the journal device for the inner ends of the upper feed-rollers.

A frame of ordinary construction, marked A in the drawing, is provided, in suitable journal-boxes, of which three cutter-spindles are journaled vertically, the cutter-heads B G D of which are provided with cutters for tongueing and grooving, as shown in Fig. 1. Between the cutter-heads B G and O 1) two boards are designed to be fed and cut at one and the same time, the boards being properly guided between the central strips E and adjustable gages F G which swing and H I which slide. The cutter-spindles are driven by belting from the driving-shaft of the machine in the usual way, over pulleys J. The lower feedrollers L are both upon one shaft, and the upper feed-rollers are upon separate shafts, the journals of the separate shafts meeting in the center of the machine. Between the rollers K and the lower feed-rollers L the two separate boards are fed to the cutters, the friction of the rollers and revolution of the same serving to force the boards between the cutters. As is customary, the upper rollers are attached by suitable means to weighted levers M, which serve to press these rollers down tightly upon the boards. The rollers K are journaled in sliding boxes N, which are raised and lowered by screws 0, beveled gearing P, and hand-crank Q, the screws being fitted to the gearing by feathering connections customary to permit the weighted levers to move the slides N independent of the gearing to limited extent. Three single wheels and one double wheel are used at each end of the feed-rollers to drive the same so as to permit expansion or contraction of the distance between the feed-rollers. The single wheels are marked R S T, and the double wheel U. The wheels R T are upon the shafts of the feed-rollers, and a double wheel, U, upon a stud, V, secured to the frame of the machine. The double wheel revolves loosely upon the stud, and upon this same stud a link, W, is attached, which carries a stud for the wheel S, the wheel S being linked to the wheel R by link X. In the expansion of the rolls the wheel R moves in a vertical path, as shown in dotted lines X X, and the wheel S in a curved path, shown in dotted lines X X in Fig. 2.

It will be seen in reference to Fig. 1 that the wheel S connects to the inside part of the double wheel U, while the wheel T connects to the outer side. This arrangement, however, can be reversed, and its purpose is to permit the periphery of wheel R to pass below the periphery of wheel T, so that While the feed-rollers can berun close together, the wheels R T can be of larger diameter than the diameter of the feed-rollers, and consequently of greater power than gear-wheels which are all in line, and necessarily smaller in diameter than the feed-rollers. The inner ends of feedrollers K are separately journaled to boxes a, which are slotted vertically, and secured to a single slide, N, the slots permitting the independent vertioal movement of each box a, and consequently permitting the rollers K to feed at the same time different thicknesses of boards.

The boxes at are kept to their work by powerful springs b, which are held in place by setscrews-or pins 0.

I am aware that it is not new to drive the feed-rolls of a molding-machine by a train of gearing so combined that the driving-Wheels on the respective feed-rolls may be larger than the diameter of either of the latter by passing each other. My improvement of this feature is limited to the peculiar devices employed.

I claim- 1. The combination of the three cutter-heads, B O D, in a flooring-machine, substantially in the'manner and for the purpose specified.

2. The combination of feed-rollers K L, sliding journal-boxes N, gear-Wheels R T, linked gear-Wheels S X W, and double-faced gear- WILLIAM H. DOANE.

Witnesses J. L. WARTMANN, PHIL. G. WEATHERBY.

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