US26461A - Jambs w - Google Patents

Description

J. W. LAWRENCE.

(Jarriage spring;

Patented Dec, 13, P859.

E ERS. PHOTO-LITHOGRAPHER. WASHINGTON. I:v c.

UNITED STATES PATENT OFFICE.

JAMES W. LAWRENCE, OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF, H. BREWSTER,

JOHN W. BRITTON, OI SAME PLACE.

CONNECTING- ELLIPTIC SPRINGS T VEHICLES;

Specification of Letters Patent No. 26,461, dated December 13, 1859.

To all whom it may concern:

Be it knownthat I, JAMES W. LAWRENCE, of New York, county of New York and State of New York, have invented certain new and useful Improvements in the Construction of Light Road-Wagons; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being made to the annexed drawin making a part of this specification, which 1s fully described herein.

In the construction of thisclass of vehicles a desired feature has been the attainment of the utmost degree of lightness without a sacrifice of the required amount of strength, and the various parts of this kind of wagon have been from time to time so much 1mproved by inventive ability that while the weight has been within a few years reduced to not more than half, the strength and durability have been greatly increased.

My improvement lies in the manner of aflixing the elliptic spring, generally preferred, upon the back axletree, and of securing the parts in place. This has heretofore been usually accomplished by passing a strip of iron known as a clip over the spring, the lower ends of which strip are threaded and enter holes in a straight piece placed up against the underside of the axle tree, and securing them there by nuts. To hold the parts properly together two of these, laced a few lnches apart, and midway of the axletree have generally been employed, or three bolts have sometimes been used, passing through the leaves of the is required.

spring, the axlebed, and the iron axletree. These bolts weaken the axle bed andthe axle at the point where the greatest strength the lower part of an elliptic spring secured a to it by my improved clip, which is thus; 11

constructed: At: (a) is seen the bent partof the axletree, andthe threaded ends of (a) are secured by the nuts (1);). In the ends of the plate (6) are small bolts the countersunk heads of which are seen at (b). by i which it is secured to the leaves of the spring (0) and by which those are secured the clip, and upon'this is forged solida fi plate (6) extending outivon each side, as ,1 shown. The lower part of the clip (0) is forged solid with the iron portion (d) of 56.

to each other. The spring, the axle. bed

e and the iron of the axle tree. are held to gether without the possibility 1016 their being displaced and thusanothenpoint is attained ,60 by their strength and lightness are increased.

in the construction of these wagonswhere- I claim- The manner of combining and securing the back axle and theelliptic spring, specifically as described herein. e v I a e In testimony whereof I have hereunto subscribed my name,

Witnesses: i v S. H. MAYN IQJ,

GEORGE H.MO" 1'I.

JAMES w. LAWRENCE. i

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