US352295A

US352295A - Whiffletree-hook

Info

Publication number: US352295A
Authority: US
Publication date: 1886-11-09
Anticipated expiration: 1903-11-09

Description

(No Model.)

A. A. BRAGKBILL.

WHIPFLETREB HOOK.

Patented N0v.'9, 1886.

Ill/VE/VTGH ATTORNEY WITNESSES.

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hook of the same.

Darren STATES PATENT OFFICE.

ALDUS A. BRAOKBILL, OF GREENLAND, PENNSYLVANIA.

WHIFFLETREE-HOOK. f

SPECIFICATION forming part of- Letters Patent No. 352,295, dated November 9, 1886.

Application filed July 17, 1886.

To aZZ whom it may concern.-

Be it known that I, ALDUs A. BRAOKBILL, a citizen of the United States, residing at Greenland, in the county of Lancaster and State of Pennsylvania, have invented certain new and useful Improvements in Frizzen-Hooks and Expansion-Links for Double and Single Trees; and I do herebydeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it a-ppertains to make and use the same.

Frizzen-hooks as heretofore made have been solid oblong straps with the hook attached,the link used being the ordinary chain-link, it being necessary in this case to heat the frizzen to expand the same in order to get it on the vehicle-furniture.

The object of my inventionis to provide, as a new article of manufacture, a frieze iron or strap that can be made of malleable cast iron or steel for use on single or double trees, and in combination with the frizzen to furnish an expansion-link which shall be easily placed; in position on the frizzen, and will expand or contract, according to the strain exerted by the team, and relieve the sudden jar which would occur by the use of the solid link. I attain these objects by the mechanism illustrated in the accompanying drawings, similar letters referring to similar parts throughout the several views.

Figure] is a side elevation of the frizzenhook and expansion-link; Fig. 2, a top elevation of the same. Figs. 3, 4, and 5show the expansion-link apart. Fig. 6 is atop view ofthe expansion-link,through the line A A in Fig. 1. Fig. 7 is a top view of Fig. 3.

In the side elevation, Fig. 1, B represents the body of the single-tree; O, the body of the frizzen; D, the hook attached to thefrizzen; E, the spring which is held in position by the bolt E, which serves the double purpose of holding this spring in position and clamping thebody of the frizzen 0 fast to the singletree B. G in this figure represents the top hook of the expansion-link; H, the spring; I, the bottom Figs. 3, 4, and 5 show the expansionlink apart. G, of Fig. 3,.represents the top set of spring-hooks; H, in Fig. 4, the spiral spring; I, of Fig. 5, the bottom set of spring-hooks.

Serial No. 209,385. No model.)

Fig. 6 is a' top view of the expansion link through the line A A of Fig. 1. It will be seen that both the top hooks, G, and the bottom hooks, Lare composed each of four books, which,when in position on spring and together, wouldshow a transparent perspective, as-represented by Fig. 6, through thelineAA,Fig. 1.

Fig. 7 is a top view of the hooks. G,in Fig. 3,shows a transparent perspective of this part of the expansioalink when they are apart.

Having thus described these improvements, .the manner of working them is as follows: The end of the single-tree B having been out somewhere near the size, the bolt F is backed out of the frizzen 0, so as to allow this frizzen to spring apart at thejointff. By this means the frizzenstrap G is easily forced on the end of the single-tree B, the spring E being then brought in the proper position to bear against the hook D at d. The tap-bolt, F, is drawn tight, which clamps the strap'Ofast to the end of the single-tree B, and presses the projecting points a a a a. fast into the wood, which effectually prevents any tendency of the strap to turn on the same. jecting points a a a a on the inner sides of the frieze-iron, one central V-shaped rib, nearly across the entire width of the strap, might be cast with corrugated saw-teeth in its edge. The advantage of this rib over the teeth would be that it would not be necessary to open the strap so wide to drive it on the end of the single-tree, for the groove made by the rib cutting into the wood would be entirely filledby it, and the tendency to fracture the malleable iron by springing it open consequently lessened.

The object of the spring E, where it presses against the hook D atd, is to allow the expansion-spring to be slipped in and out, as the occasion may require, and also to form a hardenedsteel washer for the head of the tap-bolt, F,to screw down on. The frontendofthe spring E, where it presses against the hook at d, is rounded oft", so as to form a projection on the inside to slip the link through.

The expansion-link, which is shown apart in Figs. 3, 4, and 5, when'put together and the eye of the upper hooks, G, pushed past the Although Lshow pro-' ICO spring E at d on the frizzen-hook D, which is attached to the single-tree B, the whole combination is together and ready for use. When the trace chains or hooks-are attached in the eye e of the lower hooks, I, and the team pulls in the direction of the arrow 0, it will be seen that the spring H is compressed by means of the hooks G and I pulling on the ends of the spring H from opposite directions-41m ends of most entirely around the single-tree B, with the hook D attached, and the tap-bolt F, which screwsinto the body of the strap 0, so as to require no loose nut, and holds the spring E in position,said spring also serving as a hardened-steel washer for the head of the bolt F, substantially as set forth and described.

2. In combination with the frieze-iron O, the expansion-link composed of the upper springhooks, G, and the lower sprink-hooks, I, with the spring H, when constructed as shown, and for the purpose described.

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

ALDUS A. BRACKBILL.

WVitncsses:

WM. J. MiNGLE, D. H. KULP.