US961688A - Tightening device. - Google Patents

Description

G. T. GUNNIUS.

TIGHTENING DEVICE.

APPLIGATION FILED JAN. 26, 1909.

INVENTOR Patented June 14, 1910.

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CALVIN THEO CUNNIUS, or LONG BRANCH, NEW JERSEY.

TIGHTENING DEVICE.

Application filed. January 26, 1909.

To all whom it may concern:

Be it known that I, CALVIN T. CUNNIUs, a citizen of the United States, and a resident of Long Branch, in the county of Monmouth and State of New Jersey, have invented a new and Improved Tightening Device, of which the following is a full, clear, and exact description.

The invention relates to implements for tightening bands or wires around sectional columns, bales and the like, and its object is to provide a new and improved tightening device arranged to permit of conveniently and powerfully drawing the band or wire tight without much physical exertion on the part of the operator, and to allow of securely interlocking the ends of the wire or band after the band is drawn tight to the desired degree. To attain this object, use is made of a pair of levers having clamps at one end for engagement with the ends of the wire, and a screw rod engaging nuts on the other ends of the levers for imparting a swinging motion to the levers.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improvement as applied for tightening a wire around a sectional column; Fig. 2 is a cross section of the same on the line 2-2 of Fig. 1; Fig. 3 is a side elevation of one of the clamps; Fig. A is a sectional plan view of the same; and Fig. 5 is a perspective view of the ends of the wire interlocked with each other.

On a suitably constructed support or frame A, are fulcrumed at B, B the bell crank levers G, C arranged in opposite directions and carrying at their lower ends clamps D, D for engagement with the terminals E, E of the wire or band to be drawn tight around a column F or other article, the ends of the wire crossing each other, as plainly shown in Figs. 1 and 2. In the upper ends of the bell crank levers O, O, are journaled the trunnions G G of nuts G, G, in which screw the right and left hand threads of a screw rod H, provided at one end with a crank arm I for turning the screw rod H with a view of imparting'a simultaneous swinging motion to the bell crank levers C and O. The screw rod H is provided at or near its middle with a collar Specification of Letters Patent.

Patented June 14., 1910.

Serial No. 474,264.

J, mounted to slide up and down in a vertical guideway A, formed on the support or frame A, thus holding the screw rod H against axial movement relative to the support or frame A. Now when the screw rod H is turned in one direction, the nuts G, G are moved simultaneously toward each other, thus imparting a swinging motion to the bell crank levers C, C in the direction of the arrows a, a whereby the clamps D, D are carried upward and in so doing carry the terminals E, E of the wire or band along, thereby drawing the wire tight around the column F or other article.

In the lower end of the support or frame A are ournaled the wheels K under which pass the crossed wire ends to the clamps D, D, thus holding the wire at the crossing of the ends close to the face of the column F or other article, as will be readily understood by reference to Figs. 1 and 2. After the wire has been drawn tight, the operator gives a half turn to the tightening device to form the ends E, E of the wire into loops E", E (see Fig. 5), after which the clamps D, D are opened to release the wire terminals. The loops E E are preferably closed by the use of links L placed on the wire ends E, E previous to connecting the ends with the clamps D, D and drawing the wire tight, as above described.

Each of the clamps D, D is preferably of the construction shown in detail in Figs. 3 and 4:, that is, on the corresponding lever C or G is formed an ofiset G in which is bolted an eccentric stud D for a handled clamping arm D to swing on, the pivotal end D of the said arm D being eccentric and provided on its peripheral face with teeth for firmly gripping the wire end E or E and pressing the same against foot or jaw C formed on the corresponding lever C or C. By adjusting the eccentric stud D on the offset G the clamping arm D can be readily set for clamping wire ends of various thicknesses.

The tightening implement shown and described is very simple and durable in construction, can be easily applied and manipulated and readily moved about.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A tightening device, comprising a support, levers fulcrumed on the said support, clamps on one end of the said levers, nuts journaled on the other ends of the said journaled 011 the said support for holding the wire in close contact with the object around which it is passed and guiding the ends of the wire to the said clamps.

3. A tightening device, comprising a support, levers fulcrumed on the said support, clamps on one end of the said levers for clamping the crossed ends of a wire, nuts journaled on the other ends of the said levers, and a right and left hand screw rod screwing in the said nuts, and provided with a collar straddling the said support and mounted to slide thereon.

4. A tightening device, comprising a support, having a guideway, a wheel j ournaled on the said support for engagement by the wire, bell crank levers j ournaled on the said support, clamps held on one end of the said levers, nuts journaled on the other ends of the said levers, and a right and left screw rod screwing in the said nuts and provided with a collar held to slide in the guideway of the said support.

5. A wire tightening device, comprising a support, bell crank levers fulcrumed at the junction of their members on independent pivots at opposite sides of the support, clamps on the shorter members of the levers for engaging the crossed ends of the wire,

means engaging the longer members of thelevers for drawing them together and moving the shorter members apart, and means on the support for engaging the wire at the crossing of its ends to hold it in close contact with the object around which it is passed.

6. A wire tightening device provided with a lever having a jaw and an offset, an eccentric stud adjustably secured to the offset-of the lever, and a clamping arm eccentrically mounted on the said stud for clamping a wire on the jaw of the lever.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CALVIN THEO CUNNIUS.

Witnesses:

NELLIE M. BRAY, RALPH L. BRAY.

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