US574313A - Carriage-gear - Google Patents

Description

(No Model.)

W. H. EMOND. CARRIAGE GEAR.

No, 574,313, A Patented Dec. 29, 1896.

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UNITED STATES PATE T OFFICE.

WVILLIAM H. EMOND, OF BOSTON, MASSACHUSETTS.

CARRIAG E-G EAR.

SPECIFICATION forming part of Letters Patent No. 574,313, dated December 29, 1896.

Application fil d November 17, 1894-.- Serial No. 529,121. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM H. EMOND, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Carriage-Gears, of which the following, taken in connection with the accompanying drawings, is a specification.

My invention relates to carriages, and more particularly to that class of carriage that has four Wheels, the forward wheels and axle swinging horizontally on a vertical pivot.

The objects of my invention are, first, to dispense with the safety-brace and the absolute necessity for a kin g-bolt; second, to place the turning-center back of the forward axle; third, to provide a safety-clamp between the turning-center and head-block, and, fourth, to provide an adjustable, strong, and antirattling bearing or gear. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a top plan of the gear. Figf 2 is a front elevation of the same, showing forward axle, head-block, and spring. Fig. 3 is a bottom plan of the same, showing safetyplate. Fig. 4 is a bottom plan of the gear with concealed portions shown by dotted lines. Fig. 5 is a side elevation in part section of the device. Fig. 6 is a bottom plan of the same with safety clamp-plate removed. Fig. 7 is plans and sections of the several parts.

Similar letters in the several figures of the drawings designate like parts, referring to whicha is the upper plate of the gear, having reach-plates d, to which are secured the reaches of the gear and to the front of which is bolted the head-block e.

b is the movable plate of the gear, and is secured to the forward axle f by means of clamps g. It is also provided with a thimble 1), designed to engage in a socket in the upper plate ct at m, and is secured by a bolt which passes vertically through the thimblejoint thus formed.

0 is the lower or safety plate, which is bolted to plate a under plate I) and forms a clamp between the head-block e and turningcenter m. It is held in justed by bolts 71 n.

cl are the reach-plates of the gear. These reach-plates are a part of plate a, and to them are bolted the carriage-reaches.

When adjusted, plates a and c are stationary.

Plate 5, carrying with it the forward wheels and axle, to which it is secured, turns upon the pivot made by the thimble p, and for greater security a bolt passes vertically through the thimble-joint m. This bolt is not essential, however, and may be altogether omitted.

The wearing-surface of this gear is between the under face of plate a and the upper face of plate I). The upper face of the safety clamp-plate c is covered with rubber, which position and is adin turn is covered with a thin plate of steel.

The elasticity of the rubber makes it possible to tighten the gear from time to time, so as to avoid all possibility of rattling.

By means-of this device I dispense with th e safety-brace and reduce the importance of the king-bolt. I do, in fact, use abolt at the turnin g-oenter which corresponds with a kingbolt, but it is simply as an additional precaution and item of strength. It is not actually necessary to the successful operation of the gear and may be altogether dispensed with, while in the old construction the king-bolt is of vital importance, it being necessary, first, as a turning-center, and, second, as a means of holding the gear together.

The safety-clamp,located between the turning-center and head-block, is of the greatest importance, as it provides a strong and durable means of securing the gear together independent of the turning-center itself and, to gether with the thimble-joint, makes a most effective construction. By using the safetyclamp too we have a most convenient method of adjusting the gear and overcoming any tendency to rattle consequent upon the'wearing of the bearing-surfaces.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is j 1. In a carriage-gear, the upper bearingplate provided with one or more reach-sockalso provided with a light rearward extension for engagingthe king-bolt nut atthe turning-center, all as shown and described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 15th day of November, A. D. 1894:.

VILLIAM II. EMOND.

\Vitnesses:

SETH P. SMITH, FREDERIO W. Buss.

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