US387211A - -john cornell - Google Patents

Description

(No Model.)

J. OONNELL. PLANING MACHINE.

No. 387,211. Patented Augpv; 1888.

WITNESSES, l/VVE/VTOR,

1 M" 0M, 2288M N PETER$ Fhalu-Luncgrapher, Washinglnm I16 JOHN CONNELL, OF ROCHESTER, NEW YORK.

PLANING=MACHINE.

SPECIFICATION forming part of Letters Patent No. 387,211, dated August 7, 1888.

Application filed January 525, 1886. Serial No. 189,571.

To all whom it may concern.-

Be it known that I, JOHN OoNNELL, of Rochester, New York, have invented certain Improvements in Planing-lilachinesof which the following is a specification, reference being had to the accompanying drawings.

My present invention relates to certain im provements in planing-machines designed to simplify the construction and increase the ef ficiency of that class of machines in which divided feed-rolls are used for the purpose of feeding two boards of unequal thickness at the same time.

My improvements are. fully described and illustrated in the following specification and accompanying drawings, and the novel features thereof specified in the claims annexed to the said specification.

' My improvements in planing-machines are represented in the accompanying drawings, in which-- Figure 1 is a side elevation, the side frames of the machine being represented by dotted lines. Fig. 2 is a plan view. Fig. 3 is a rear elevation of the divided feed'rolls. Fig. 4 is a horizontal section through the boxes at the inner ends of the divided rolls, showing the manner of supporting the same. Fig. 5 is an end elevation showing one of the boxes at the inner end of the divided feed-rolls and the adj nstingscrew.

In the accompanying drawings, A represents the cutter-head of my improved planingmachine; B, the pressure-bar; C G, the independently-moving chip-breakers; D D, the movable feed-rolls; E, the lower feed-roll; F, the crossbar.

The side frames of the machine are repre sented by the dotted lines H. The side frames are connected together by a suitable bed and cross-bars. The cutter-headA is mounted on a shaft, k,arranged to revolve in suitable journals or boxes on the frame of the machine.

Immediately behind the cutter head is placed the pressure-bar B, which extends entirely across the machine,being provided with suitable lugs at either end, by which it is attached to the frames. The pressure'bar is made of such a shape, as indicated in the side elevation, Fig. 1, that it extends down in rear of the cutter, and bears upon the planed surface of the work passing through the machine (No model.)

immediately behind the cnttingpoint of the knife.

The pressure-bar is provided with a series of logs, d, to which the arms 6 e of the chip breakers O O are pivoted. The arms of the chip-breakers are bent upward over the cutter-head, and serve to sustain the chip-breakers in position immediately in front of the cut tor-head, with their lower edges bearing on the unplaned surface of the lumber passing through the machine. The lower edge of the chip-breakers is brought as near as practicable to the cutting-point, while permitting the inner margin of the edge to swing upward on the dotted line 0 in Fig. 1, and to clear the knives.

The chip-breakers may be provided with an arm or lever, G, Fig. 1, provided with a weight, in order to hold them down on the board.

The chip-breakers O C are independent of each other in their movements, so as to permit the feeding through the machine of boards of unequal thickness. The machine is provided with the usual discharging-rolls, I.

In front of the cutters I arrange the lower feed-roll, E, which revolves in suitable journals on the frame of the machine. Above the feed-roll E are placed the movable feed-rolls D D, which are arranged to rise and fall independently of each other by means of the boxes h h if h bell-cranks ff f f and links 9 9. Provision is made for driving the upper feed-rolls from the lower roll, E, by means of any suitable expansion-gearing. (Indicated by the dotted lines 1 in Fig. 3.) D is caused to press on its work by means of a suitable weight attached to the bar j, the upper end of which is bent into a hook which bears on the upper surface of the box h, as indicated in Fig. 1. The corresponding roll,D, is caused to bear on the boards passing under it in a similar manner by means of the barj, and a weight attached directly to itslowerend or to a lever pivoted thereto. The boxes h h of the roll D are provided with a lugs or lugs, 72, Fig. 5, which are pivoted to the lower end of the bell-crank leversff. These levers are The upper end of the The feed-roll bell-crank levers ff are connected by the link 9, the result of which arrangement is that the boxes h h are caused to rise and fall simultaneously, and the ends of the feed-roll D are caused to bear on the boards passing under it with an equal pressure. The feed-roll D is provided with the shaft Z, which is arranged to revolve in the boxes hh. A slight amount of longitudinal movement is permitted in the roll, or the lugs a a may be pivoted to the boxes. The box It on the outer end of the feed roll D slides in suitable guides or ways at tached to the frame of the machine. The arms 2' t" on the cross-bar F reach upward and backward into the proper position to sustain the centers of the bell-crank levers f f.

The arrangement for causing the outer and inner ends of the other feedroll, D, to rise and fall simultaneously is substantially similar to that already described with reference to the feed-roll D. The feed-roll D is provided with the shaft Z, journaled in the boxes h h, connected together by means of the bell-cranksf j and link 9. The bell-cranksf f are pivoted to the arms t t on the cross-bar F. The feed-roll D is caused to press on its work by a weight attached to the bar j. In order to sustain the boxes h h at the inner ends of the divided rolls, I provide each of the boxes with a groove on its inner face, r, Fig. 5, into which groove the projecting T-shaped tongue 8 is fitted. The tongue is attached to or formed in one piece with the cross-bar F. This arrangement permits the boxes h h" to rise and fall independently of each other.

In order to provide for adjusting the divided rolls relatively to'the lower feed-roll, E, I employ the adjusting-screw t, Fig. 3, passing through the frame and bearing on the under side of the box h. The adjustment of the in ner end of the feed-roll D is effected by means of a screw, it, Figs. 2 and 5, inserted in the box or the lug attached thereto in such position as to bear on the upper side of the T-shaped projection s. A similar arrangement is adopted with reference to the other roll, D, which is provided with adjustingscrews t and a, arranged to operate in the manner already described.

My improved planing-machine is simple and cheap in construction and has proved highly efficient in practical operation, one of the principal advantages secured by the construction herein described being the equality of pressure on each edge of the board passing through and beneath the divided feed-rolls.

I am aware that divided or sectional chipbreakers have been heretofore used, and that pressure-bars have also been employed in connection with revolving cutterheads, and I hereby especially disclaim anything shown or described in Patents Nos. 146,500, 167,145, 803,425, and 313, 885; but I am not aware that independently-movable chip-breakers located in front of the cutter-head have been combined with a pressure-bar extending across the machine in rear of the cutter-head by arms extending over the latter and pivoted to the bar, a construction which materially lessens the cost of manufacture and increases the durability of the machine while facilitating its practical operation.

By my improved construction also the divided chip-breakers are attached to the pressure-bar in such fashion that all these parts may be removed from the machine together by simply taking out the bolts at the ends of the pressure-bar, which secure it to the side frames, thereby affording free access to the cutter-head.

I claim 1. The combination, with the cutter-head A, of the pressure -bar B, extending across the machine in rear of the cutter-head, and removably attached to the upper surfaces of the side frames at each of its ends, and the independently-movable chip-breakers G 0, provided at their ends with the arms 6 6, extending over the cutter-head and pivoted at their rear ends to the pressure-bar, whereby provision is made for the simultaneous removal of the pressure-bar and the divided chip-breakers O C from the machine, substantially as described.

2. The combination, with the cutter-head A, of the pressure bar B, extending across the machine in rear of the cutter-head, the independently-movable chip -breakers C 0, provided with an arm or arms, 6, extending over the cutter-head and pivoted at their rear ends to the pressure-bar, and the independently-movable feeding-rollers D D, substantially as described.

3. The combination, with the lower feedroll, E, of the movable upper feed-roll, D, provided at each end with boxes h h, and bell-cranks ff, connected together by link g,extending parallel with the axis of the roll, whereby an equal pressure is secured at each end of the roll during the rising and falling movement, substantially as described.

4. The combination, with the lower feedroll, E, of the independently-movable upper feed-rolls, D D, provided at their ends with the boxes h h h h and bell-cranksfff f connectedtogether by the links 9 g,extending parallel with the axes of the rolls, whereby the upper rolls are permitted to rise and fall independently of each other, substantially as described.

5. The combination,with the upper movable feed-roll, D, provided at its ends with the boxes h h, and bell-cranksff, connected together by the link 9, of the cross-bar F, having arms 2' i,extending over the rolls and supporting the pivots of the bell-cranks, substan tially as described.

6. The combination, with the upper feed roll, D, provided at each end with the boxes h h, and bell-cranks f f, connected together by link 9, of the crossbar F, having tongue 8 extending inward and forming aguide for the box h, substantially as described.

7. The combination,with the movable feedroll, of bearings at the ends thereof, supports 9. The combination, with the support for for causing their movements in parallel lines, the material, of the presser-roll, bearings for and a link or rod connecting said supports for the same, and levers connected to said bearings 15 causing their simultaneous movement in the for supporting them, and a link connecting 5 same direction, substantially as described. said levers for equalizing their motion, sub- 8. The co1nbination,with the movable feedstantially as described. roll, of bearings at the ends thereof, supports for causing their movements in parallel lines, JOHN PONNELL. a link or rod connecting said supports and I0 causing their simultaneous movements in the Vitnesses:

same direction, and a weight applied to one GEO. B. SELDEN, of said bearings. H. G. PHILLIPS.

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