US422431A - James mccrudden - Google Patents

Description

(No Model.)

J. MOORUDDEN. VEHICLE SEAT.

" No. 422,431. Patented Mar. 4, 1890.

WITNESSES UNITED STATES PATENT OFFICE.

JAMES MOORUDDEN, OF FLINT, MICHIGAN, ASSIGNOR TO THE FLINT ROAD CART COMPANY, OF SAME PLACE.

VEHICLE-SEAT.

$PECIFICATION forming part of Letters Patent No. 422,431, dated March 4, 1890.

Application filed November 25, 1889- $erial No. 331,570. (No model.)

To all whom it may concern.-

Be it known that 1, JAMES MOORUDDEN, a citizen of the United States, residing at Flint, in the county of Genesee and State of Michigan, have invented certain new and useful Improvements in Vehicle-Seats; and I do declare the following to be a full, clear, and exact description of the invention, such as will en able others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to spring-backs for vehicle-seats; and it consists in forming a coiled spring in the vertical brace-irons that support the back of the seat. Said spring environs and supports the rear horizontal portion of the seat-rail, and affords a simple, cheap, and substantial spring for the back of the vehicle-seat, as will be hereinafter more fully set forth, and the essential features of the device pointed out particularly in the claims.

In the accompanying drawings, forming a part of the specification, Figure 1 is an isometrical view of a vehicle-seat having my improved spring-back attached thereto. Fig. 2 is a cross-section on dotted line a; a: of Fig.1. Fig. 3 is a View of same, showing a modification of the coiled spring. Figs. l and 5 are details showing the spring brace-irons.

As indicated in the drawings, Arepresents the seat-bottom; B, the back-rest or lazy-back of the seat; 0, the seat-rail, and D the spring brace-irons.

The central portion of the brace-irons D is formed into a coiled spring a. A foot 25 is formed on the lower end of said brace-irons, having a hole 6 therein, as shown in Figs. 4 and 5, by means of which said irons are bolted to the seat-bottom A, as shown at f in Figs. 1, 2, and 3. The upper ends of the brace irons D are provided with holes, and by bolts or rivets are secured to the lazy back B of the seat, as shown at c in Fig. 1. The rear horizontal portion of the seat-rail 0 passes through the coiled spring a of the brace=irons D D, and the ends ofsaid rails are bent downward and secured at b to the seat bottom A. (See Fig. 1.) By this arrangement of parts the rear portion of the seat-rail O is supported in the coiled springs a of the brace-irons D D, and the brace-irons are in turn held in their vertical position by said seat-rail, which forms a lateral brace for said irons, and the upper ends of the brace-irons, to which the lazy-back B is attached, are allowed to spring back, as

"shown by dotted lines in Figs. 2 and 3, thus affording a yieldingback to the vehicle-seat.

When irons of light weight are used for the braces D D, the springs are formed in a small coil, so as to fit tightly around the metal seatrail 0, (see Figs. 2 and 4,) causing said springs, when pressure is placed against the lazy-back B, as in leaning against said back by the occupant of the seat, to contract upon the seatrail, thus preventing the back of the seat from springing back too far, as will be readily un derstood; but for heavy work, where larger irons are used, the coil of the series next to the upwardly-extending portion of the braces D is formed on a larger circle, as shown at a in Figs. 3 and 5, affording the resistance of the spring only against pressure on the seatback, which is necessary, in the use of larger irons, to give sufficient spring to the back of the seat.

This improved spring-back may be applied to vehicles of all classes, and is especially adapted for road-carts, the yielding nature of the back overcoming to a great extent the effect of the horse motion. In both the forms of coils herein shown a portion of the series of coils encircling the seat-rail O is fitted snugly around said rail to prevent any rattling of parts. It will also be observed that the foregoing forms a durable, cheap, and yielding seat-back.

Having set forth the essential features of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In combination with the seat-rail C, a set of lazy-back supporting braces coiled near their central portion one or more times around said seat-rail, the lower ends of said braces adapted to be attached to the seat-bottom, their upperends adapted to support a lazy back, substantially as specified.

2. In combination with the seat-bottom of a vehicle, the horizontal seat-rail G, a set of spring-metal braces having their lower ends portions of the braces adapted to support a lazy-back, their lower ends adapted to be attached to the seat-bottom, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES MCCRUDDEN. Witnesses:

J OHN'J CARTON, J. DALLAS Dom.

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