US536921A

US536921A - Shaft-tug

Info

Publication number: US536921A
Authority: US
Publication date: 1895-04-02
Anticipated expiration: 1912-04-02

Description

(No Model.)

W. H. DAVIS.

Y SHAFT TUG Patented Apr. 2, 1895 WIWI/meow ma Norms PETERS oo, PHoToLxTHu., WASHINGTON, u. l:`

UNITED STATES PATENT OFFICE.

WILLIAM H. DAVIS, OF FEDERALSBURG, MARYLAND.

SHAFT-TUG.

SPECIFICATION forming part of Letters Patent No. 536,921, dated April 2, 1895. Application led March 10, 1892. Serial No. 424,421. (No model.)

= ject to lessen the jar or shock imparted to the shafts and vehicle by the upward and downward movement of the horse while in motion.

In the accompanying drawings, illustrative of my invention, Figure I represents a front elevation of a shaft-tug embodying my improvements, a portion being shown as broken away in order to more clearly show the relationship of parts. Fig. II represents a side elevation. Fig. III represents a central longitudinal section thereof.

Similar letters of reference indicate similarI parts throughout the several views.

l Referring to the drawings, A indicates the shaft loop or carrier through which the shaft passes and by which it is supported. The main body portion of this shaft-carrier is made of strips of leather, as is usual, and it has a spring connection at the top to the saddle and at the bottom to the girth. This spring connection consists, as shown, of a continuous wire coiled at its upper portion B and at its lower portion Cinto the form of a liat coil, two of the coil convolutions being straightened out to form the connecting piece a, which is embedded in and covered over by the leather of the shaft-tug A. This method of connectingthe spring to the shafttug is especially advantageous, as it dispenses with other fastening devices, is extremely durable and efficient, and is simply and easily effected. At its lower end the coil-section C is formed into a loop b, and connected thereby to the 'girth billet D, provided with the usual perforations common to girth-billet straps. The upper end of the upper coil section B is wound about the bar c of the buckle E, and forms a tongue d for said buckle. The buckle Eis for the purpose of connecting with a strap or billet from the saddle, as indicated, for instance, by the strap or billet F. Upon the bar of the buckle E is secured a shield G of leather, which, being interposed between the coil section B and the saddle, protects lthe saddle from contact with said coil section.

The operation of the invention may be readily understood. By means of the girth billet D the girth is adjusted to accommodate itself to the horse, whereupon the coil sections take up and compensate for both the upward and downward movement of the horse, so as to relieve the shafts and vehicle from the jar or shocks which would otherwise be imparted to them.

l. A compensating shaft tug consisting of a laminated shaft loop or carrier, and a spring connection composed of a continuous wire formed into a flat upper coil-section B and a dat lower coil section C, the con-nection between said sectious being sewed into the shaft loop, a buckle connected to the upper part of the upper coil section, and a girth billet con' nected to the lower part of the lower coil section, substantially as described.

2. In a compensating shaft tug, the combination with the upper spring section, of a buckle, the upper end of the spring section being wound about the bar of the buckle and the free end forming its tongue, substantially as described.

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

WM. H. DAVIS.

Witnesses:

H. W. ALLEN, WM. G. GRAY.