US337946A - gbeene - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.)

D. A. GREENE.

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(No Model.) 2 SheetsfSheet 2. A

D. A. GREENE.

MAHNB FR BUNDLING .WOOD- No. 337,946. Patented Mar. 16, 1886.

wbb @am NITE STATES DARWIN A. GREENE,

O F NEV YORK, N. Y.

MACHINE FOR BUNDLING WOOD.

SPECIFICATION forming part of Letters Patent No. 337,946, dated March 16, 1886.

Application tiled July 2, 1885. Serial No. 170,555.

1o and letting it descend by gravity when the pressure above and below is equalized by opening the exhaust. The piston operates the wood-compressing device through a lever and toggles.

r I provide an adj ust-able device for arresting the descent of the piston.

I employ a partially-rotating valve, operated. by treadles, to admit and exhaust the steam.

zo My wood-compressing devices are partially semicircular and partially V-shaped, so that the rise of the piston compresses the wood not only vertically but laterally.

I provide for conveniently adjusting the connections to adapt the piston and connections to compress different-sized bundles of wood.

The accompanying drawings form a part of this specification, and represent what I con- 3o Sider the best means of carrying out this invention.

Figure 1 is a vertical section with certain portions in elevation, the front plate being removed,and Fig. 2 is a corresponding plan View.

Thesucceeding figures are on a larger scale,

and represent certain portions detached. Fig. 3 is a vertical section. Fig. 4 is a section through the valve and immediately adjacent parts in a plane at right angles to that in Fig.

4o 3. Fig. 5 is a corresponding section with the valve turned in a different position. Figs. 6 and 7 represent the valve detached. Fig. 6 shows the upper face, and Fig. 7 the lower face. Figs. 8, 9, and 10 representaprovision for excluding chips and dirt from the working parts. There are two of these, as shown on Fig. 1. Each is a counterpart of the other. Fig. Sis a side elevation, Fig. 9 an outer or face View, and Fig. 10 a horizontal section.

5o Similar letters of reference indicate corresponding parts in all the figures where they occur.

(No model.)

A is a fixed frame-work, certain portions being distinguished, when necessary, by additional marks, as A A2, 85e. An upright cylinder, A', is nicely finished in its interior to receive a close-iitting piston, C, which is a thick solid casting grooved circumferentially on its exterior, instead of receiving packing. rllhe piston-rod C extends out through a correspondingly-equipped hole in the cover A2, thus avoiding the use of packing or stuffing box. Its upper end presents a considerable plane surface, O2, with a rigid arm, C3, eX- tending out horizontally, and taking hold of a vertical guide, A3. A screw, C", tapped through the arm C3, rests at each descent of the piston on a block of wood,\V, inserted in a suitable pocket in the cylindercover A2. The steam admitted and discharged at willby devices to be described further on, acts on the lower face ofthe piston when required. the piston acts by the plane surface C2011 a roller, Di", carried on the free end of a lever, D, which latter is provided with a cross-pin or trunnions, D, carrying rollers D2, which are received each in a slot, c', in the fixed frame-work. The lever D connects by a pin, d', to a link, E', extending upward. It also connects by a pin, d, to a link, El, extending downward. The latter connects to a pin, a, on the fixed frame-work. The former connects by a pin,f, to a carriage, F, which is guided in suitable ways in the iiXed frame-work, so as to have only a rising and sinking motion. A stout right'andleft screw, G, connects the carriage F with a cradle, J, in which the wood to be bundled is placed in proper quantities by hand or by anysuitable means, onel end of each stick resting against a back gage, B, which performs the usual function of holding t-he ends even, being adjustable to adapt For differentlengths of wood. The right-andleft screw G, with its connections, governs the size of t-he bundle of wood by determining the height to which the cradle J shall be raised at each rise of the piston. On admitting the stean1,the piston C is driven up and the lever D turned, bringing the links E E2 nearly into line, elevating the carriage F and the connected cradle J. The elevation of the center d is accommodated by the slot c. The arrangement makes a double While the wood The ascent ofy 6 y boiler through a pipe, H. o

is strongly compressed, the string previously introduced is tied, as will be readily under- Stood. 0n allowing the steam to escape, the piston C sinks and theleverD turnsagain into the position shown, allowing the carriage F and the cradleJ to sink. The bundle of wood is now removed and a new lot of wood supplied, and the operation repeated'. The straps A4 A5,which extend over the bundle of wood, are fixed adj ustably to the framing A by extending through sockets at the point represented. The nuts A6 are engaged on the lower end. Pinching-screws A7 contribute to hold them rinly.

I attach importance to the form of the aperture in which the wood is inserted. There is a half-round space in the'cradle J, and a corresponding` half-round space under the straps A4 A5. Between these portions the surfaces at the sides of the space are inclined, as shown. This form gives the ad vantage that when the steam is let on, and the cradle J is forced strongly upward, the wood is not only compressed vertically between the semicylindrical portions, but is also compressed between the inclined portions of the inclosed surfaces. The result is a nearly uniform compression of the bundle of wood in all directions. It also releases the bundle perfectly when the cradle descends, enabling the completed bundle to be easily yremoved by relaxing all pressure against its sides. This avoids the need of any mechanical device to eject the bundle, even after the most severe pressure and the most elastic wood. The space above the piston is alternately filled and emptied at each movement with steam at atmospheric pressure, received through the pipe I, (see Fig. 3,) which communicates with the chimney. This arrangelnent-there beingasufiicient quantity of steam in the pipe-insures that the atmospheric pressure alone is felt on the upper side of the piston without admitting air or dust.

The valve and mode of operating it to admit live steam from the boiler are peculiar.

A8 is the valve-chest, M the valve, and m the stem thereof, extending out through a stuffingbox, A9, and carrying on its lower end acrosspiece, N, having two pins, a n2, vin which are connected two links,O O2, which severally connect with bell-crank levers P P2, which turn on a fixed center, A10, and connect, respectively, with the treadles Q Q2. On depressing one treadle, Q', by the foot, the stem m will be turned in one direction, elevating the other treadle. Liberating that treadle and stepping on the other reverses the movement.

The valve-chest receives steam from the (See Fig. 3.)

The valve lWI has a hollow throat, mei, ofthe form shown in strong lines in Fig. 6, and in dotted lines in Fig. 7. The valve has also two orices, m and m2.

On turning the valve into the position shown in Figs. 3 and 4, the steam may exhaust freely through the ports c3 a4, iiowing inward through the hollow throat m* of the valve, and rising from the center of the latter and escaping through the port a5 into the exhaust-pipe I. In this conditionof the parts the piston sinks.

On operating the treadle to partially'rotate the valve to induce the condition shown in Fig. 5, live steam is allowed to enter through the ports a3 a", and the piston rises, with the effects above described.

The junctions of the levers P l?2 with the treadles Q Q2, may be adjusted by means of pinching-screws R R, to allow the valve to be always thrown to exactly the right position by a full depression of the proper treadle.

The straps A4 A5 may be raised or lowered by properly operating the pinching-screws A7 and nuts AG.

The height of the cradle J relatively to the carriage F may be adjusted by turning the screw G. When the right position is secured, the pinching-screw g contines it. One of the most important adjustments is attained bythe screw C4. This should always receive the concussion when the piston sinks to thelowest, point allowed. In making large bundles the piston should he allowed to sink to the bottom of the cylinder. Vhen smaller ones are desired, the screw C* may be turned downward, so as to arrestthe descent by striking on the block W earlier. The rollers D2 are each formed with a flange, which, engaging in the inside ofthe frame A, keeps the roller in place on the pin D', on which latter it serves as an anti-friction roller in allowing the slight vertical motion ofthe center.

It is important to prevent chips and dirt from getting into the mechanism. The ii'xed frame-work A extends upward andiforms a casing inclosing the toggle-links E .E2 and their connections. This casing matches closely to the thick portion of the cradle J. A thin. ner portion of the cradle extends out farther, as plainly shown in Fig. 1. To allow the cradle to run up and`do\vn,there is a slot or opening in the side of the casing of sufficient width and depth to accommodate these thin parts of the cradle. When the cradle goes up, it leaves thelower portion of the slot open.

I provide means-for covering in the form of an extensible curtain on each side. The two are counterparts of each other. A description of one will suffice for both. l l

J is a pin inserted through k`uckles formed in the edge of the thin portion of the cradle.

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J2 is a piece of cast-iron or other suitable material hanging loosely from the pin J. screw,j, is tapped in the lower end,which connects an additional piece', J3, by being inserted through a slot in the latter. A vertical web or ridge on the outer face of the piece J2 matehesin a correspondinggroove in thelower portion, J3, and aids in guiding it. As the cradle rises and sinks, the extensible curtain,

composed of the parts J2 and J s, stretches and v contracts, so as to keep the aperture in the framing practically closed. A rectangular aperture is made in the back of the framing,

through which a screw, g, may be operated. A vertical guide,which maybe composed of a wire folded upon itself so as to form two parallel guides, is suspended to the cradle, and, hanging down parallel to the screw G, receives a wire pin, g', inserted in one of the holes in the collar G', and aids to prevent it from bccoming loosened. It will be seen that the cradle operates between the straps A4 A5. A recess, Ji, is formed in the cradle J to receive the string. It extends down to such depth that the string lies entirely below the wood while the latter is being piled in. After the compression is effected the ends of the string are brought together over the bundle and tied. On relaxing the pressure on the wood it eX- pands until restrained by the string and forms a properlycompacted bundle. The upper ends ofthe cradle are turned outward, as indicated in Fig. 2. This greatly facilitates the rapid and easy insertion of a fresh string after each bundle is removed.

Modifications may be made in the forms and proportions Without departing from the principle or sacrificing the advantages of the invention. I can dispense with some of the provisions for adjusting. Thus, for example, the straps A4 A5 may be immovably connected and the adjustment of the size of the bundle may be made by operating the screw G to work the cradle higher or lower.

Some kind of a stop, in place of the screw I consider very important by its function of gently arresting the descent of the heavy piston, however rapidly and unskillfully the machine is worked, and I prefer that it be a screw, as shown, so as to allow of ready adjustment; but astop set immovably in the arm C3 may serve.

I claim as my inventionl. In a wood-bundling machine, the combination, with a steam-actuated piston having a horizontal plane, as at C", of a lever pivoted to two toggles, the one pivoted stationarily to thc frame and t-he other to the movable woodcarrying cradle, the said lever carrying a friction-roller which rides upon the plane surface of the piston, as set forth.

2. The combination, with the piston, the lever, and toggles, as described, ofthe cradle J, the stationary strap A4, and a right-andleft screw, G, arranged between the cradle and toggles, to adjust the throw of the cradle, as set forth.

3. The combination, with the piston having a horizontal arm, and with the lever D and toggles, as described, of an adjustable threaded vertical pin, 0*,operating through the arm of the piston, and an elastic stop, W, arranged to stop the descent of the piston yieldingly, as set forth.

4. In a bundling-machine, as described, the cradle J, having lower semicircular contour and sides curving outwardly and upwardly, and the adjustable straps A* A5, having semicircular upper contour with sides curving outwardly and downwardly, combined and arranged, as shown, to compress and release laterally as well as vertically, as herein specified.

5. The combination, with the compressingcradle J, the cylinder and piston, and suitable connections between said parts, substantially as shown, ofthe oscillating valve M, arranged at the lower end of the cylinder and adapted to control the supply of steam thereto, the cross-bar N, rigid with the valve-stem, cranklevers P I, links O O2, connecting said levers with the cross-bar N, and treadles Q'Q, for operating the crank-levers to admit or exhaust steam at will, as and for the purposes specified.

6. In a wood-bundling machine, substantially as described, the combination, with the cradle J, of the curtains formed by the parts J2 J,adjustably secured together by screw-andslot connection, and pivoted at J to the sides of the cradle, to exclude dust and dirt from the working parts, as set forth.

7. In a bundlingmachine, as described, the combination, vwith the guide A3 and yielding stop W', recessed in the cylinder-head, of the piston C C', having a horizontal arm, an adjustable pin working through said arm and against said stop, a cradle, J, a lever and toggles, as described, transmittingpower from the piston to the cradle, and a right-and-left screw, G, arranged between the cradle and toggles, to adjust the throw of the cradle, as herein set forth.

In testimony whereof I have hereunto set my hand, at New York city, this th day of June, 1885, in the presence of two subscribing witnesses.

DARVIN A. GREENE.

Witnesses:

CHARLns R. SEARLE, MANIENE ELLIsoN.

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