US636813A - Whiffletree-coupling. - Google Patents

Description

N0. 636,813. PatentedNov. I4, 1899. C. KRETSCHMER. WHIFFLETREE fiOUPLING.

(Application filed May 19, 1899.)

2 Sheets-Sheet (No Model.)

Wi'lbcsscs,

ms virus 00., FHOTD-L!THO., WASHINGTON DV 1:.

N0. 636,8l3. Patented Nov. l4, I899.

- C. KRETSCHMER.

WHIFFLETREE COUPLING.

(Application filed May 19, 1899.)

2 Sheets-Sheet 2 (No Model.)

WW-I F u 5 0 1|. PLSFI 8 {Q a a F 4 7 5.55 v 6 W" mm M7 W z a 7 .W 5 w 2 W 7 flu 2 W g 3 m w? L 4 1 i E m X CHARLES KRETSOHMER,

OF PUEBLO, COLORADO.

WHIFFLETREE-COUPLING.

SPECIFICATION forming part of Letters Patent l lo. 636,813, dated November 14, 1899. Application filed May 19, 1899 Serial No. 717,447. (No model.)

To aZZ whom, it may concern:

Be it known that I, CHARLES KRETSOHMER,

a citizen of the United States, residing at Pueblo, in the county of Pueblo and State of Oolrado, have invented a new and useful Whiffletree-Ooupling,of which thefollowingis a specification.

The invention relates to improvements in whiftletree-cou plin gs.

The object ofthe present invention is to improve the construction of whiffletree-couplings and to provide a simple, inexpensive, and efficient device designed to be applied to a tongue and to the cross-bar of a pair of thills and capable of increasing the durability of such parts by reinforcing the same where they are perforated for the reception of pivots. I

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a perspective view of a whiffletree-coi'ipling constructed in accordance with this invention and shown applied to a portion of a doubletree and a tongue. Fig. 2 is a vertical. sectional view taken longitudinally of the tongue. Fig. 3 is a similar view taken transversely of the tongue. Fig. 4 is a detail perspective view of the upper section of the coupling. Fig. 5 is a similar view of the lower section of the coupling. Fig. 6 is a perspective view showing the device applied to a portion of a singletree and the cross-bar of a pair of thills. Fig. 7 is a vertical sectional viewtaken-trans- Versely of the cross-bar.

Like numerals of reference designate corresponding parts in all the figures of the drawings.

1 and 2 designate upper-and lower sections of a whiffletree-coupling; and these sect-ions are provided at their adjacent faces with concentric annular flanges or enlargements which are interlocked with each other and provide a bearing. The sections of the coupling are provided with registering perforations for the reception of a pivot-bolt 3,and the upper section 1 has its concentric flanges or enlargements 4t and 5 arranged to receive the concentric flanges or enlargements 6 and 7 of the lower section of the coupling. The flange or enlargement 7 of the lower section is arranged .around the central opening and fits within the inner flange 5 of the upper section, the said inner flange forming a socket to receive the part 7. The outer flange 6 of the lower section of the coupling is received Within the annular space between the inner and outer flanges of the upper section.

The coupling is shown applied in Figs. 1 to 3, inclusive, to a portion of a pole or tongue and a portion of a doubletree, and the lower section 2 is provided at opposite sides of the pole or tongue 8 with depending vertical sides or flanges 9, terminating in threaded extensions 10, which pass through eyes 11 of a plate 12. The plate 12, which is bolted to the lower face of the tongue, reinforces the same and is provided with lateral extensions which are perforated to form the eyes 11. The threaded extensions receive nuts 13, which are located at opposite sides of the nut 14 of the pivot-bolt. The sides or flanges 9, which are located at opposite sides of the tongue or-pole, support the same at the point where it is perforated for the reception of the pivot-bolt, and the durability of the pole is thereby greatly increased.

The upper section of the coupling is provided with horizontal extensions 15, which are perforated to formears 16, and it has vertical flanges 17 located between the extensions and arranged at opposite sides of the doubletree 18, whereby the latter is reinforced and supported opposite the pivot-bolt, similar to.

the tongue or pole. By this arrangement the doubletree is prevented from splitting, and in order to brace the same further vertical bolts 19 are arranged in pairs at opposite sides of the doubletree. The horizontal extensions which are arranged on the lower face of the doubletree project laterally therefrom, and. the bolts 19, which have their heads countersunk in the projecting portions or cars 16, extend from the same to the top of the doubletree and pass through perforated ears or lugs 20 of a top plate 21. The top plate 21, which is arranged on the upper face of the doubletree, is perforated for the reception of the pivot-bolt, and it is engaged by nuts 22, arranged on the threaded upper ends of the The top plate has its ends tapered and bolts.

rounded, as shown, and is provided with an upwardly projecting tubular extension or sleeve 23, which receives a brace 24. The brace 24, which is arched to pass over the dou bletree, has its ends bolted to the pole or tongue, and it is provided with a central eye 25 for the reception of the sleeve 23, a washer 26 being interposed between the brace and the top plate.

In Figs. 6 and 7 of the accompanying drawings the whiffletree-coupling is shown applied to a singletree 27 and to the cross-bar 28 of a pair of thills. The parts are arranged similar to those before described, with the exception that the lower section is connected with a clipplate 29 and the top plate is not provided with a tubular extension or sleeve. The clipplate 29, which is perforated for the reception of the threaded terminals of the flanges of the lower section of the coupling and the pivot.- bolt, is provided atits rear end with an eye or opening 30 and is connected with the singlet-ree by an L-shaped brace 31. The said clipplate, which is disposed transversely of the cross-bar, extends rearwardly therefrom and is designed to be connected with a suitable stay strap or chain, the eye or opening serving as means for connecting the same with it.

The L'-shaped brace, which is composed of a short horizontal arm and a longer vertical arm, has its lower end threaded and passed through a perforation of the clip-plate, which is secured to the brace by means of a pair of nuts 32 engaging the upper and lower faces of the clip-plate. The horizontal arm of the L-shaped brace terminates in an eye 33, which engages a polygonal portion of the pivot-bolt 34, the eye being of the same shape as the adjacent portion of the pivot-bolt, whereby the latter is locked against rotation to prevent the nut at its lower end from accidentally unscrewing.

The L- shaped brace is adapted to support the singletree and is capable of preventing the same from tilting should the plates become worn and loose, and the nuts will enable the wear to be readily taken up. Also the washer 26 may be readily detached and renewed when necessary.

The invention has the following advantages: The whifiletree-cou pling, which is simple and comparatively inexpensive in construction,

possesses great strength and durability, and it is adapted to be applied either to a pole and its doubletree or to a singletree and the crossbar of a pair of thills. It is adapted to brace and support the wooden parts at the points where they are perforated for the reception of the pivot-bolts, and it eifectually prevents the said wooden parts from splitting.

Changes in the form, proportion, size, and the minor details of construction within the scope of the appended claims may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

What is claimed is 1. A whiflietree-couplingcom prisingalower section provided with depending sides or flanges adapted to embrace and support a tongue or a cross-bar and terminating in threaded extensions adapted to extend through eyes of a bottom plate, an uppersection provided with perforated portions or ears and having upwardly-extending flanges located between the same and adapted to embrace and support a whiiiietree, a top plate, fastening devices arranged in pairs and connecting the top plate with the perforated portions or ears of the upper section, and a pivot connecting the sections, substantially as described.

2. A whiflietree-couplingcomprisingalower section provided with depending sides or flanges terminating in threaded extensions and adapted to embrace a tongue or a crossbar, a bottom plate having eyes or openings receiving the threaded extensions, nuts arranged on the latter, an upper section interlocked with the lower section and provided with horizontal extensions, said upper section having vertical flanges located between the horizontal extensions and adapted to embrace a whiffletree, a top plate having perforated projecting portions, and bolts arranged in pairs and connecting the extensions of the upper section with the projecting portions of the top plate, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

CHARLES KRETSCHMER.

\Vitnesses:

W. H. THOMPSON, T. G. W. CANTRY.

Images