US283422A

US283422A - Albert sakford

Info

Publication number: US283422A
Authority: US
Publication date: 1883-08-21
Anticipated expiration: 1900-08-21

Description

(No Model.)

A. SANFORD.

GRAPPLE.

No. 288,422. Patented Aug. 21, 1883.

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NITE STATES ALBERT SANFORD, OF;

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'GRAPPLE.

SPECIFICATION forming part of Letters Patent No; 283,422, dated August 21, 1883,

Application filed July 6,1883. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT SANFORD, of Oshkosh, in the county of Winnebago and State of Wisconsin, have invented certain new and useful Improvements in Grapples; and I do hereby declare the following to be a full, clearyand exact description of the same,

referencebeing had to the accompanying drawings, forming part of this specification, and to the figures and letters of reference marked thereon.

to which the hooks are pivoted; Fig. 3, a-detached view of the part which connects the aforesaid casting to the band or ring of the grapple. Fig. 4 is a view of a modified form of the grapple.

Similar letters of reference in the several figures indicate the same parts.

The hooks are represented by the letters A A, the casting to which the hooks are pivotedby B, the bar which connects the casting to the band or ring by C, and the band or ring by D.

v The casting B is provided with two slots or recesses, 12 b, arranged at an angle to each other, within which are pivoted the upper ends of the hooks by means of pins a a. The lower walls of the said slots constitute stops or shoulders, as seen at a a, to limit the approach of the points of the hook toward'each other, so as to prevent them from striking and injuring each other, while the upper walls of said slots also form stops at a a to prevent the hooks from opening beyond the point needed to accommodate as large a piece of timber as the length of the hooks will clasp.

5o Said casting is further provided with an upper projecting eye, b, which is adapted to work freely between the ears or lugs c c of the connecting-bar 0, being held therein by means of a pivot-bolt, c, as shown in Fig. 1. The upper end of the bar 0 is united to the band or ring D by a swivel-connection, as shown.

If the grapple is to be used on a bar carried by hand, the bandD is preferably divided and provided with a clamping-screw, e, as shown in Fig. 1, so as to enable it to receive such bar, and be tightly clamped in position there on; but when the grapple is intended for use upon an ordinary fall' the split band may be displaced by a solid ring for the accommoda tion of the hook of the block. The jointing of the casting to the bar 0 and the connection of the latter to the band or ring by a swivelconnection gives a universality of movement to the grapple, and renders it possible to grasp with the hooks a piece of timber, in whatever position it may be.

Another mode of effecting the universaljoint connection between the hook-supporting casting and the lifting band or ring is illustrated in Fig. 4, and consists in forminga ball or spherical projection upon the casting, and a socket for such ball to work in upon the carrying band or ring, the same result being accomplished by this arrangement as by that shown in Fig. 1.

hooks is such that they open automatically when they strike a piece of timber, and close and hook into the timber as soon as raised, and all this without the necessity of any ad justment by hand.

The construction of the casting with the stops on each side of the hooks, while enabling the hooks to hang with their points directly opposite, prevents said points from passing each other and becoming terfere with their automatic spreading and closing when acting upon the timber. The upper stops, 0* 0, also prevent the hooks from striking the bar and the hands that are bold ing the bar.

The whole device is of simple construction, and after practical tests has been found to save a great deal of time and labor in the handling of timber.

The constructlon and arrangement of the jammed, so as to in- I claim as my invention- 1. The combination, with the hooks, of the I 3. The combination of the hooks, the cast- 15 ing to which the hooks are pivoted, provided with. the projecting eye at the top, the connect ingbar having the lugs, between which said eye is pivoted, and the band or ring to which said connecting-bar is swiveled, the whole 20 constructed and arranged substantially as described, and for the purpose specified.

v ALBERT SANFORD.

Witnesses; I

E. T. ELLSWORTH,

G. H. GILE.