USRE3022E - Geokge w - Google Patents

Description

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GEORGE W. PICKER, .ia-Or MYsTio RIVER, CONNECTICUT.

Letters Patent No. 49,647, dated August 29, 1865 reissue No. 3,022, dated July 7, 1868.

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TOVALL WHOM IT MAY CONCERN:

Be it known thatrI, GEORGE IW. PACKER, Jr., of Mystic River,'in the county ot` New London, and State oi' Connecticut, have invented certain new and useful Improvements in Wall-Builders and Stump-Extractors; and I dov herebydeclare that the following is a full and exact description thereof. v

The accompanying drawings form a part of this specification.

Figure I is a side elevation of my machine.

Figure 2 isa plan'view. Y v

Figure 3 indicates, on a smaller scale, in plan, the movements of the structure in` properly operating it. The three diagrams indicate the changes in position; the first, the halt alongside the end of the wall or fence on which the stone orstump is to be deposited; the second, the turned position of the team, and the third and final position, the" team having turned the entire structure into the positionfor depositing the load in the wall, either at the top or bottom, as may be required.

Figure 4 is a vertical section ofthe rocker, in the plane of the forward'axle.

Similar letters of reference indicate correspondingpartsiu all the figures.

My invention relates to the construction and arrangement of the parts of the 'carriage for this and analogous uses. l

My kcarriage is a--stout triangular pyramidal tru$s,`supported on four wheels, and suspending the stonel or other load from the apex or upper*y angle Ofthe pyramid. Its four wheels give`the structure very Obvious advantages over any analogous truss supported on two wheels, and its character as a truss, having inclined struts to transfer the weight to the wheels, and ties across to prevent their spreading, gives it very distinct advantages over the trucks or wagons, of whatever names, in which the weight is carried on a simple beam or brest-summer supported at a high level. I

` Au important feature ot' my apparatus lies in the form of thc tics which extend across and are subjected to a tensilestrain when the device is loaded. I give these a greatly curved or arched form, by selecting for the purpose naturally curved pieces of Oak or other suitable wood, or by applying together and bolting through properly cut pieces of stitl' stuff. The rigidity ot the stuff enables it to resist a very great pull without straightening, and the arched form allows me to swing a bulky stone or stump beneath them, and to place it onthe top Y of a wall or the like, while the base of the truss is down on or near the axles.

In order to reduce the disposition of my. arching ties or reaches to straighten under loads, I introduce braces or ties, connecting the high portion of the curve tc the apex or some connected part of the triangle or pyramid above. e

In order to accommodate the carriage-to very great roughness or inequalities in the surface On which it operates, and give it at the Same time suiiiciont stitness to properly support a great load depending from the apex of the triangle, I spread my triangle sidewise at .thc rear end, so as to occupy `the whole availablc width of the hind axle,'but concentrate it on the centre of the forward axle, and' rest it there on a round-bottomed rocker,

which is held in position on the axle by a king-bolt, having a universal joint yin close'proximityrto the upper` surface of the forward axle.

'Ihc result of .the whole is a simple and remarkably strong and durable machine, admirably adapted for agricultural districts, capable of being constructed and operated with little skill and expense, and of being used in rocky andvstumpy situations with impunity. Its front wheels prevent the load from crushing or choking the cattle in descending and ascending steep places. The wideuess et'. the space, or great length between the front and hind wheels,` allow it ,to be turned and hauledl so as to lower'stones on awide wall or into a wide cavity directly from my truss.

To enable others skilled in the art to make and use my invention, Iwill proceed to describe its construction and operation, bythe aid ofthe drawings and of the letters of reference marked thereon.

A. is the forward axle; A A2, the forward wheels; and a, the rocker-plate; B is the hind axle; B1 B2, the

hind wheels; and bfbz, the stout bolts which oonne the curved reaches; C is a stout block of hard woodfwith a rounded or spherical base, which serves as a rocker, an'd c' is a correspondingly-shaped plate of iron, bolted on' the under side, to `confine' the head'of the king-bolt D, and allow the'rocker C to vibrate or roll in all direction'son the plates c and a, as willbe obvious, while the loose connection of the king-bolt D allows it to securely' holdthe parts together, while they ai'cfree to turn in all directions in the manner of a universal'joint.

`El and Ezare stout curved reaches, bolted at their front ends to the rocker C, and at their rear ends to the hind axle BJ The form of the cross-section is rectangular; and the depth is considerably greater than the width, so as to giveigrcat strength to resist a tensile and straightening force with little unnecessary weight.

'h I, M1, and M 2 are stout timber pieces, which form a triangular pyramid or pyramidal truss, resting on the front and rear axles in the manner represented.

The fr ont timber, M, rests on the rocker C, and is bolted thergto. The rear timbers, M1 and M2,`rest on the rear axle, andare bolted thereto near the ends thereof', as indicated. The upper ends of these timbers are strongly connected by a bolt, m, from which depends the clevis N, adaptcd'to support a hydraulic jack or other power for raising the weight. Y

lGr is a windlass, carried in bearings near the feet of the timbers Ml and M2, and turned and connected in any ordinary manner, not represented, in order to operate a suitable rope or chain through pulleys, not represented. depending from the clevis N. Y

Pl P2 aretie-rods, connecting the crown or belly of the curve of theseveral reaches l E2 with the bolt m.

The'eiiects ot"thc str ain on my structure are'analogous to those on common trusses. The load on the summit of the pyramid tends to widen the base, and the tie or reach tendsto resist it by its tensile strength. In other words, the strain on the reaches Eand E2 tonsle,and this tends to straighten them'. The braces I)l P2, connecting the curved reaches with'the apex of the pyramid, aidin maintaining the curvature of the reaches,

'and thus stiften and strengthen Vthe structure,

In the use of Illy/apparatus, the cattle are attached to the tongue a, and the whole is drawn alongside of the stone or other object to be lifted, and then turned and hauled around, to bring the apex of the truss directly over it. Then a suitable sling or other attachment' being employedfthe stone is lifted clear ofthe ground, and itswhole weight supported on the clevis N. In this condition the strain on all the parts is severe, but not in excess of their capacity to resist. 'I he strain on the timbers M M Mz is crushing, that on the reaches El Egis ltensile and straightening or transverse, that on the upright ties I" P2, between the reaches and the top of the pyramid, is tensile, while that on the rocker, axles, and wheels, is of the well-known and ordinary characters, the peculiar service or function of the spherical-based rocker being only performed on very uneven ground, supposed not new present.

In this condition the cattle are turncdiproperly, and the load moved oil alongside of `the place where the stone is to be deposited, where it is again turned and hauled around until the stone is directly over the bed on which it is to lie, and there lowered and released. The team is then turned around and the apparatus removed by a reversal of the movements described. g

It will he evident that this mode of operating allows the piling of one stone or mass upon another, so as to build walls of any height less than that of the highest partof the arching-ties E1 I believe this result has never been before accomplished with so little labor.

IIavingvnow fullydescrihed my invention, what I claim as new, and desire to secure by Letters Patent, is as follows:

1.' The within-described combination and arrangement of the pyramidal fraineM Ml Mi, and curved reachesv El E2, with the four wheels and their accessories, substantially as and forthelpurposes set forth.

2. The employment of braces I P2, in combination with the struts M, tbc., and the curved roaches EE2, and arranged to be supported on wheels, substantially in the manner described, so that the braces shall aid in maintaining the curvature or arching condition ofthe reaches by connecting cach to the struts above at one or more points, as and folthe purpose herein set forth.

3. The spherical-based rocker C, having the king-bolt D connected thereto by a loose joint, as represented,

vin combination with a tru'sscd frame, M, and with the wheels, substaiitially as and furthe purposes herein set forth. v i

GEORGE W` PACKER, Jn. Witnesses:

C. C. Livinos, W, CDEY.

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