US779131A - Planing-machine. - Google Patents

Description

PATENTED JAN. 3, 1905.

H. PARSON PLANING MACHINE.

,APPLIGATION FILED APR. 24, 1903.

4 SHEETS-SHEET- 1.

PATENTED JAN. 3, 1905.

No. 779,131. Y

I A r if. FAN/WK.

PLANING MACHINE.- APPLIOATION FILED APR. 24, 1903.

4 SHEETS-SHEET 2.

No. 779,181. PATENTED JAN. 3, 1905. H PARSONS PLANING MACHINE.

APPLICATION FILED APR. 24, 1903.

4 SHEETS-SHEET a.

Wines N0n 779,131. 1 PATENTED JAN 8, 1905.

H. mom,

PLANING MACHINE- APPLIUATION FILED APR. 24, 1908.

4 SHEETS-SHEET 4.

NrrnD STATES TPatented January 3, 1905.

PATENT Fries.

PLANlNG-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 779,131, dated January 3, 1905. Application filed April 24, 1903. Serial No. i54,108.

To all whom, it may concern:

Be it known that LHENRY PARsoNs,of Marlboro, in the county of Middlesex, in the State of Massachusetts, have invented a new and useful Planing-Machine, of which the following is a specification.

Large quantities of leather and other sheet material are cut into soles and other shapes by means of dies, the edges of which are forced through the sheet material spread out on a cutting-block. The supporting-surfaces of those cutting-blocks are so roughened by the cutting edges of the dies that they require planing quite often; and the main object of my invention is to provide a machine by which these cutting-blocks can be planed accurately, rapidly, and without highly-skilled labor. While my machine is of course adapted for general use, yet it is mainly intended for use in shops in which these cutting-blocks are used.

My invention consists in a machine made up of a cutter-head revolving rapidly in a hood with a discharge-outlet, the whole being constructed to act as a blower by which the chips and dust are blown from the hood and carried through the outlet, and thereby prevented from being scattered about the cutterhead heterogeneously; this hood also acts as a guard and protects the operator from accidental injury; also in an edge-support which is close against the under edge of the cuttingblock while the cutters act upon it, thereby preventing the under corner of the cuttingblock from chipping.

In the drawings, Figure 1 is a plan. Fig. 2 is an end elevation. Fig. 3 is a front elevation 0n reduced scale. Fig. 4c is a front elevation of the cutter-head, its hood, and the edge-supporters. Fig. 5 is an elevation of the edge-supporter detached, showing the side which is next to the hood. Figs. 6, 7, and 8 are details illustrating the cutter.

The cuttingblocks to be planed are composed of numerous blocks of wood, commonly rectangular in cross-section, glued together and bound together by steel straps about their middle, as shown in the drawings. They have long been well known and are of varying sizes,

but usually when new are about fourteen inches by ten inches and often larger, up to fourteen inches by twenty-six inchesin crosssection, and vary in length, being sometimes about nine feet, but usually shorter.

My machine, as shown in the drawings, consists of a main frame 1, which supports the shaft-pulleys and belts for actuating the cutter-head and the main carriage, and of a side frame 2, upon which the main carriage and its adjuncts reciprocate to carry the cutting-block to be planed to the action of the cutters of the cutter-head.

The cutter-head is shown with four radial arms a, fast to hub a, which is itself fast to main shaft A. The outer portions of these arms a are diagonal to the axis of hub 64, the hub and these arms being much like a propeller and revolve rapidly in hood B in the direction indicated by the arrow in Fig. 4, and thereby create a strong current of air into the open front of hood B and outthrough the outlet-pipe b. The cutters a are secured each to the outer end of the arms a, so that as they revolve each planes the face of cutting-block D, and the chips and dust are carried by this draft into the hood B and out through the outlet 5. (See Fig. 2.)

The hood B is made in two parts, hinged together at Z), and is shown with the upper part turned back to allow ready access to the cutters and cutter-headin Figs. 1 and 4:.

The cutting-block D to be planed is secured to cross-carriage F, which is mounted in ways on main carriage F. Carriage F is moved on frame 2 by pinion f and rack f. Pinion f is fast on shaft f carrying gear f which is driven by worm f, fast on shaft A, driven from main shaft A. Shafts A and A are connected by opposed belts A and A, which are constantly running when the main pulley A is under power; but the double clutch A when the shipper A* is in its intermediate position is disconnected from both driven pulleys, but when moved in one direction, as shown in Fig. 2, it clutches the pulley driven by belt A with shaft A, and when moved in the other direction it clutches the pulley driven by belt A with shaft A, thus providing for the slow feed and quick recovery of carriage F. Carriage F carries the cross feed-carriage F, to which the block D is secured, so that when the carriage F is moved endwise carriage F and block D are both carried across the face of the cutter-head and the face of block D next the cutters is planed off, the depth of the cut depending upon the adjustment of the cross-carriage F on carriage F.

Carriage F is composed mainly of brackets f and the side supports f and is adjusted across carriage 'F by means of shaft f journaled in brackets f and carrying pinions f which mesh with racks f, part of or fast to the ways F on which brackets f slide. Shaft f is revolved by means of the double pawl f and its ratchet f by means of handlevers f and f, as will be clear from Figs. 1, 2, and 3.

The side-supports f present a wide flat surface against which one side of block D is rigidly held by screw-hooks d, which hook onto the end straps d at the ends of the block D, these hooks sliding freely in the space between the two side-supports f 0 as the length of the block requires, when each hook d is put under strain by its hand-wheel d thus holding block D firmly against the side-supports f this operation being not only so simple that any workman of ordinary skill can perform it readily and quickly, but also insuring the accurate adjustment of block D on carriage F. Moreover, block D may be secured with either face desired to side-supports f, and thus may be planed on either face desired, for it is important that both faces be utilized, and these blocks are in practice reduced to a thickness by repeated planings of a little more than the width of the central straps d, binding their parts together.

The edge-support Gr extends under the lower edge of block D and is preferably supported on stout springs, as shown. Its upper edge is recessed, as shown in Figs. 4c and 5, so that the cutters will clear it, and its function is to support the lower corner of block D close up to the cutters as they out past that lower corner. The block D as it is fed to the cutters slides over the upper surface of edge-support G, which is therefore slanted off at each end, as shown, but bears along the greater part of its upper edge under the lower edge of block D, close to the path of the cutters as they cut away the lower corner of block D.

The cutters a are shown in detail on a larger scale in Figs. 6, 7, and 8. They are rectangular bars of steel ground off slanting at one end and an edge formed around and along one corner by grinding off one side of the wedge thusaformed, as shown in Figs. 6, 7 and 8. They are readily held solidly on the diagonal outer portions of arms a by their holders a which are clamped in place by a screw and nut, as clearly shown.

The operation is as follows: Block D is secured by the screw-hooks d engaging the end straps d to the side-supportsf, the screwby outlet 6 to the desired place.

tendant then revolves shaft f and thereby movescarriage F and block D sidewise until block D is brought to a position where its lower corner will travel over edge-support G, after which block D is fed forward by the action of the feed mechanism in carriage F. To start carriage F, the shipper A is shifted to connectthe pulley of belt A with shaft A, and thereby drive pinion f and rack f slowly and impart a slow feed to carriage F and carriage F and block D, with the result that block D is fed slowly past the cutter-head, its face planed off to the desired depth, and the debris blown out of hood B, and directed When block D has been thus planed, shipper A is again shifted to connect the pulley of belt A and disconnect pulley of belt A with respect to shaft A, when the motion of shaft A is reversed and speeded up, and the carriages F and F and block D brought back, but more rapidly, to their first position. After block D has been planed hand-wheels d are turned back and the screw-hooks release block D, which is removed and another block put direction unless block D is to be again planed, .and commonly after carriages F F andblock D make their feed-stroke carriage F is moved a little sidewise before shipper A is reversed to make the quick return; but it is often necessary to plane block D several times, when carriage F is run rapidly back and carriage F is moved sidewise slightly to bring the face of block D slightly nearer the cutters, and carriage F is then fed forward past the cutters, planing block D a second time, and this is repeated until block D is fully planed.

What I claim as my invention is- 1. In a planing-machine the combination of a cutter-head consisting of a hub with radial and inclined arms carried by the hub and carrying the cutters, and a hood open in front, to receive the cutterhead and form an airpassage between the inner periphery of the hood and the hub of the cutter-head, which hood is closed at the rear and provided with a discharge opening at the side to admit of the discharge of the air forced to flow into the closed rear of the hood by the rapid rotation of the inclined radial arms.

2. In a planing-machine in combination a work-support which is at right angles with axis of the cutter-head; a cutter-head arranged to plane that surface of the work at right angles to the axis of the cutter-head and parallel with the face of the work-support; an edge-support for the work, with two surfaces at right angles to each other and one of which is at right angles With the surface to be planed the two forming a corner flush With the planed surface; means to clamp the Work on the Work-support; and means to feed the Worksupport With the Work clamped on it past the face of the cutter-head with one edge of the Work sliding upon the edge-support While the Work-support is fed endwise to feed the Work in a plane at right angles to the axis of the I cutter-head.

HENRY PARSONS.

4 Witnesses:

J. E. MAYNADIER, G. A. ROCKWELL.

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