US277370A - James speucb - Google Patents

Description

(ModeL) J. SPRUCE.

SPRING HINGE.

Patented May 8, 1883.

I remain in the position to which they are ad- B designates the pintle thereof. These parts NITED 1 STATES MANUFACTURING SPRING- HINGE.

, "SPECIFICATION formingpart of Letters Patent No. 277,370,

Application filed May 1, 1882. (ModeL) To all whom it may concern:

Be it'k-nown that I, JAMES SPRUCE, of Waterbury,in the county of New Haven and State of Connecticut, have invented a certain new and useful Improvement in Spring-Hinges, of which the following is a specification.

My improvement relates to spring-hinges of the kind in which a spiral spring is fitted to the pintle, so that as the leaves of the hinge are moved laterally to each other the spring wind's or unwinds.

The object of myiinprovement is to obviate or reduce the wearing of the' spring in rubbing against the pintle of the hinge.

To this end my improvement consists in the combination, in a hinge having aspiral spring applied to its pintle, of a wire or wires wound so as to be of the same pitch as the spring introduced between the pintle and one or both end portions of the spring, and titted to the space between the coils of the spring. These wires form sleeves which will remain in place when once fitted to the spring, and as much more friction will be generated between them and the spring than between them and the pintle, they will always move with the spring.

1n the accompanying drawings, Figure 1 is a face view of a hinge embodyingmy improvement with the leaves extended. Fig. 2 is an edge view of the same, and Fig. 3 is a sectional edge vie-w ot' the same.

Similar letters of reference designate corresponding parts in all the figures.

A A designate the leaves of the hinge, and

are fitted manner.

O designates a spiral spring fitted to the pintle between the bearers of the leaf A, and having its ends extended, one over each of the leaves.

D designates -spirallywound wires introduced between the end coils of the spring (3 and the adjacent portions of the pintle B. They are wound so as to be of the same pitch as the spring, and fit in the space between the coils of the spring. Then they will and secured together in the usual justed, and as the exterior spring contracts slightly in diameter when the hinge is oper- COMPANY, OF SAME .IZLAGE.

dated m 8, 1 883.

ated, it will bind on the spirally-wound wires and will cause them to move with the spring,

and not remain stationary with the pintle. Thus the wear of the spring entailed by its.

rubbing against the These wires may be pintle will be obviated.

wound separately from the springs and inserted afterward.

Of course I may,

if desirable, use'such a sleeve in connection with one end of the spring only.

1 am aware that a spring-hinge has been made in which the spring-power is divided be- 'tween two springs, one within inner spring had not the other. The

its coils fitted to the coils of the outer spring, and wasnot adapted to turn loosely on the pintle. was subjected to abrasion on the pintle,

The inner spring and as the spring force of the hinge was dependent upon it, the hinge became useless for the purpose for which it was designed on the breakage of this spring. I have before pat ented a sprin g-hinge having a spirally-grooved sleeve introduced spring and receiving spring in its groove. expensive than the between the, pintle and the end portion of the The wire coil is far less spirally-grooved sleeve,

owing not only to the cost of material, but also to the expense of the labor involved in its production. spring, an extensive and As the wire coil fits the coils ot' the it will, by reason of its resilience, have effective contact with the spring. When the spring is compressed in the operation of the hinge it will grip the wire coil tightly and insure its turning with the spring, thus preventing the coil from abrading the spring.

What I claim as my invention, and desire to secure by Letters Patent, is-

The combination, in a hinge having a spiral spring around the pintle, of a wire or wires wound so as to be of spring, introduced between of the spring and fitted to the coils of the spring,

or both end portions the space between whereby abrasion of substantially as specified.

Witnesses:

M. L. SPERRY, G. O. THOMAS.

the same pitch as the the pintle and one the spring is obviated,

JAMES SPRUCE.

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