US12764A - Gaeeiage-spbhstg - Google Patents

Description

To all whom i t' m ay concern mm sr ras PAT T OFFICE.

THOMAS MU GA ROY JRA SMIEL'HVILLE, CANADA wEs'r.

cARRIAe -srnme.

Specification of Letters Patent No. 12,764, dated April 24, 1855. I

Be it known that I, THoMAs MURoATRoYD, J r.,"of Smithville, inthe district of Niagara .jand Province of Canada West, have invented a new and :useful Improvement in Carriage-Springs; andI do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of n this specification,in which M Figures land 2 are front views of my improvement. Fig. 3, is a longitudinal vertical section of ditto, the plane of section being through the center. Fig. 4, is an inverted plan of ditto.

Similar letters of reference indicate corresponding parts in the several figures.

. 1 This invention relates to a new and useful improvement in carriage springs, and con-.

sists in the peculiar arrangement 1 of the springs and the manner in which they are connected or applied to the vehicle.

To enable others skilled in the art to fully understand and construct my invention, I

will proceed to describe it.

A, A, represent thesprings, two at the front part of the vehicle and two at the back part. These springs are of curvedor bo-w form, similar to the upper half of the ordinary eliptic spring. TheCsprings are placed one over the other at the front and back of the vehicle as shown in Figs. 1 and 2, and

the springs are of suflicient length to extend as far as the arms (a) of the axles B, of the wheels; The upper springs A, are connected at their endsby links (19) to the upper ends of rods ('0) which are attached'to the upper surfaces of thearms and the lower springs A, have their ends connected by 40 links (d) to eyes (e) which project down- Ward from the undersurfaces of the arms, see Figs. 1 and 2. .Between each pair of springs A, A, thereisa stay or red C, as

i shown in Figs. 1,2 and 3. To the upper surcenters the' usual bolsters (f8 and upon which the body F,

faces of the upper springs A, atabout their are secured the bottom of which is only. show) of the vehicle rests. Betweenthe bolster and bodyof. the vehicle at the frontpart of the vehicle a, fifth wheel D, is a brace the ends of which are connected to the front and back axles. The back part of the brace is forked, see Fig. 4, and the prongs (h) (71) are connected near the ends of the back axle but the front end of the brace is connected to the front axle by a bolt or pivot (2') shown in all the figures.

E, E, are braces which are connected to the lower springs A, and to the center of the body F, underneath by a pivot (j) as shown in Figs. 3 and 4. The front brace E, is allowed to move or turn slightly on the pivot (j).

By the above improvement the weight of the vehicle or rather the body and its load rests equally upon both springs A, A, as they are connectedby the stays or rods G, C, and the thrust of the springs and the Weight of the load bears upon the arms (0) of the axles B, no weight bearing upon the centers of the axles. All the strain that the axles are subjected to is lateral, caused by the thrust of the springs, the arms (0) sustaining the weight of the load.

I am enabled by the above improvement to use long springs extending the whole length of the axles and the springs are therefore sufliciently elastic to yield or give so that if either of the wheels is suddenly depressed orraised in passing over obstructions or into holes in the road the load and body of the vehicle will not be moved out of its proper position the springs yielding sufficiently to prevent this, see Fig. 2, in which one end of the springs and axle is raised. The springs also are prevented from being moved or wrenched forward or backward by the braces E, E, which also form a support to the body F, and the brace D, supports or keeps in proper position the axles B, B.

The above improvement can be made and applied to vehicles in about one third the time required for the manufacture of the (ordinary springs and applying or attaching them. to} vehicles, one third less weight of metal is required and superior strength and durability is obtained, and the expense of construction is about one third less than I claim as new and desire to secure by Leting also braced to prevent a, forward and ters Patent, is--' backward motion of the same and the axles in The employment or use of the springs A, B, being supported or braced by the rod or A, attached to the arms (a) of the axles bmee D, as herein shown and described.

5 B, B, by links 5, d, the links (6) being THOMAS MURGATROYD, JR.

above, and the links (d) below the arms of Witnesses: the a xle, the tWo springs A, A, being con- S. H. 'WALEs,

neeted by stays or rods C. The springs be- I. G. MASON.

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