US324491A - schumann - Google Patents

Description

(No Model.) 4 sheets-esheet 1.

H. SCHUMANN.

PROFILE GUTTING MACHINE.

No. 324,491. Patented Aug. 18, 18 85.

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PROFILE CUTTING MACHINE.

(No Model.)

Patented Aug. 18, 1885.

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(No Model.) 4 SheetsSheet 3.

H. SGHUMANN.

PROFILE CUTTING MAUHINE.

Patented Aug. 18, 1885.

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PROFILE CUTTING MACHINE.

I Patented Aug. 8, 885.

(No Model.)

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N. PETERS. Photwu UNITED STATES PATENT OFFICE.

HUGO SOHUMANN, OF LEIPSIO, GERMANY.

PROFILE-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 324,491, dated August 18, 1885.

Application filed November 17, 1884. (No model.)

To all whom it may concern:

Be it known that I, HUGO SOHUMANN, a citizen of Germany, residing at Leipsic, in the Empire of Germany, have invented a new and useful Improvement in Profile-Cutting Machines, of which the following is a specification.

In the accompanying drawings, Figure I is a front view of a profile-cutting machine operated by power. Fig. II is a cross-section of the same at line 10 10, Fig. I. Fig. III is a top view of the support carrying the cuttingtool. Fig. IV is a front view of part of the carriage to which the work to be operated upon is attached. Fig.'V is a cross-section of the carriage at linel3 of Fig. IV. Fig. V is a cross-section of the carriage at line 12, Fig. IV. Fig. VI is a longitudinal section of the carriage to which the work is attached. Fig. VII is a cross-section of the same at line 14., Fig. VI. Fig. VIII is a side view of a profile-cutting machine arranged to work the Work-holding carriage by hand. Fig. IX is a side elevation of the same with one of the side frames B removed. Fig. X is a front view, and Fig. XI a cross-section at line 15, of the tool spindle or bar. Figs. XII to XV are details of the same.

Similar letters represent similar parts in all the figures.

The driving-shaft 0 receives its required motion from a belt passing around the driving-pulley K, and is provided with a wormwheel, L,working into a corresponding wheel, D, provided with a crank -pin, E, to which the connecting-rod F is attached, operating the arm Y, attached to a shaft, N, Figs. I and II. This shaft N is provided with two arms, Z, to which rods X are attached, connected at their lower ends to a bar or to a shaft, M, on the ends of which pinions 1 and 1 are arranged, capable of turning freely on their bearings. These pinions 1 and 1 work into racks 2 2, attached to the side frames, B, and likewise into racks 3 3, attached near the ends at the back of the carriage H, to which latter the material to be operated on isattached, communicating thereby an up-and-down reciprocating motion to this carriage H. This carriage H is guided on the rods or guides H In the front of the carriage H a support, U U, is arranged, supporting the cutter-bar T, and capable of being moved nearer to or farther away from the face of the carriage by means of a screw operated bythe handle W, and moved sidewise by a suitable screw operated by the handle V. The bed-plate of this support is likewise provided with inclined slots at, Fig. III, through which the bolts pass, which secures the same to the main framing, and by which arrangement this support can be given a slight inclination toward the one or the other side or face of the carriage, whereby the variety of the work performed 1s increased.

From a pulley, K, attached to the drivingshaft 0, motion is communicated through a suitable belt, 1& to a pulley, K, attached on the end of a wooden roller, 0, situated below the supports, and from which latter motion is communicated through a belt, G, to a small pulley, 0, fast on the toolspindle T. (See Figs. I, II, III, and X.)

On the shaft N levers are arranged, carry ing on their ends the balance-weights S, and to the'carriage H chains or cords S are attached, passing over loose pulleys S attached to the cross-frame A, carrying on themother ends balance-weights S, whereby the drivinggearing and this carriage H can be exactly balanced, facilitating thereby the reclproeating motion given to this carriage H.

To the carriageH the pieces of wood to be operated on are attached. To facilitate the same the movable crosspieces R are provided with movable centers R. (See Figs. VI and VII.)

To increase the variety of the work the central back plate, H, of the carriage H 1s pro; vided with a hole, 71 into which a stud-bolt, k, is fitted, (see Figs. IV, V, and V*,) supporting a wheel, s, and disk It, to the latter of which the plate Z is secured, against which the wooden pieces to be operated on are attached. The wheel 3 has teeth 8 on its circumference, into which a rack, 1-,with correspondingteeth, is fitted. This rack or can be moved inward to engage with the teeth 8. of the wheel s, and thereby hold the same perfectly fast in any position. Said wheel 3 may be moved, or the rack r may be moved, outward, thereby leaving the wheel free to be moved or turned into any desired direction. The rack 0' moves freely in a suitable guide, 1", attached to across-piece fastened to the frame H.

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To the tool-spindle or cutter-bar T the cutter Q is firmly attached. (See Figs. X and XI.) To prevent the tearing of the wood by the operation of this eutterQ, fore cutters, 8 8, are arranged opposite to the cutter Q on the cutter-bar T. These cutters 8 consist of narrow sharp-pointed cutters i, (see Fig. XIL) placed on a rod or bar, a, with suitable distauce-pieces, 5, between them to regulate the distance of one cutter from the other, as may be desired, and are then securely fastened together by nuts on the ends of the bar a, (see Fig. XV,) to hold the same in position. This bar a, with the cutters 8 and distance-pieces 5 attached, is then placed into the cutterbar T and secured by a cap-plate, 1:, provided with a downwardprojecting ledge, 11', resting on the ends of the cuttersSand distance-pieces 5, and is further securely fastened by means of a bar, 12, acted upon by set-screws q.

To prevent the outward movement of the cutters S and distance-pieces 5, the same are provided with projecting noses or hooks o bearing against the end of the plate 1) or its projecting lodge a.

In Fig. VIII the machine is represented as operated by hand-levers b.

This machine is exactly similar to the machine represented in the other figures, except that instead of operating the carriage by a mechanical arrangement, levers b are arranged on each side of the frames B, to which the rods X are attached, connected at their other ends to a bar or shaft, M, carrying on its ends the pinions l and 1, working into the stationary racks 2 2, and the racks 8 3 attached on the back of the carriage H.

The cutting-knife Q, as well as the fore cutters, 8, with their sharp-pointed cutting-edges '17, operate upon the surface of the wood only while moving in one direction. To bring this wood or the work operated on clear of the action of said knife and cutters, the machine may be arranged as shown in Fig. IX. In this case frames 1 are arranged against the inside of each of the side frames 13, suspended from centers on a shaft, a, capable of turning freely on the same. To these frames 1? the guide-bars H upon which the frame H is guided, are attached, as well as the stationary racks 2 and 2.

bars 1 1,011 the ends of which rollers m m, turning loose on said bars, are placed. Between these rollers m m an eccentric cam, g, is arranged, turning on a fixed center attached to the stationary side frames, B, of the machine and provided with a pinion, y, securely attached to said cam 9. At the sides of the carriage II a rod f is arranged, provided with movable stops d (I. The lower end of this rod fis connected to a lever turning on a fixed center, and provided at its end with a segment, f, working into the pinions 9, fast on the eccentric cams g.

The stops (1 d are so regulated that the 11:0-

Thelower ends of these frames are connected together by distance pieces or tion of the carriage H will strike the same near the ends of its motion, moving thereby the rod f and segment f either in one direction or in the opposite direction, by which operation the eccentric cam y will be turned likewise either to the right or toward the left, acting thereby through its connection with the rollers m in so as to move the frames P, and consequently the carriage H, guided on the guide-rods H either toward the cutter-bar, so that its knife and fore cutters can operate upon the surface of the wood or other material attachtd to said carriage, or to move the said frames and parts connected therewith some slight distance backward clear of the knife and fore cutters during the return-stroke of the carriage H.

The above-described arrangement is only represented in Fig. IX, but it will readily be understood that the same is likewise applicable to the machine represented in Figs. I and II.

To insure the exact depth the knife Q shall cut into the material, the support U is provided with regulatingscrewsJ J on the sides. (See Figs. III and I.)

What I claim as myinvention, and desire to secure by Letters Patent, is

1. The herein-described profilecutting machine, consisting of the combination of the driving-shaft O with worm-wheel L, the wheel D, working in the worm-wheel L and provided with a crank-pin, E, the connectingrod F, lever Y, attached to shaft N, the levers Z Z, attached to said shaft N, rods X, attached to levers Z and carrying pinions 1 1 at their ends, working into stationary racks 2 2 attached to the frames B, and into racks 3 3 attached to the reciprocating frame II, and the reciprocating frame H, to which the work is attached, together with the pulley K, and the driving-shaft G, belt K, pulley K roller D, with belt G, and cutter-bar T, provided with suitable knives, Q, and fore cutters, 8, supported on a universal support, U, the whole being arranged to operate in the manner and for the purpose as specified.

2. The combination of the frame II, which receives reciprocating motion from pinions 1 1, with the vertically-adjustable cross-picces R and the centering-pins R in said crosspieces R, all so arranged that the work can be adjusted vertically and horizontally, as desired, in the frame H, substantially as do scribed.

3. The combination of the frame H with the stud It, toothed wheel 8, disk It, and plate Z, mounted on said stud k, and, with sliding rack 9', adapted to engage with the teeth 8 on toothed wheels, all being so constructed that the toothed wheel s and plate Z can be revolved around their center and locked in any desired position, substantially as described.

4. The combination of the reciprocating frame II with cords S attached to said frame and passing over rollers or loose pulleys S and weights S, attached to the ends of said cords S to counterbalance the frame H, together with the balance-weightsS on the ends of the operating-levers to counterbalance the moving and operating gearing, substantially as set forth and described.

5. The combination of the frames P, swinging on centers or shaft a, with a reciprocating frame, H, the distance-bars t t, connecting the lower ends of the frames P and rollers m m at the ends of the bars 15, the eccentric cam g, with pinion g, turning on a fixed center attached to the main frames B, the lever f, turning on a center attached to the frame P,

substantially in the manner and for the pur-.

pose set forth.

In testimony whereof Ihave signed my name to this specification in the presence of two subscribing witnesses.

HUGQ SGHUMANN,

Witnesses EDMUND BACH, HERMANN BIESSKER.

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