US 391433 A
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Description (OCR text may contain errors)
D. G. STOVER.
SPRING HINGE. No. 391,433. Patented 001;. 23, 1888.
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Ihvrrn STATES DANIEL G. STOVER, OF FREEPOBT, ILLINOIS.
SPECIFICATION forming part of Letters Patent No. 391,433, dated October 23, 1888.
To all whom it may concern:
Be it known that I, DANIEL O. S'rovnR, a citizen of the United States of America, residing at Freeport, in the county of Stephenson and State of Illinois, have invented certain new and useful Improvements in Spring- I-Iinges, of which the following is a description, reference being had to the accompanying drawings, in which Figure l is a face view, and Fig. 2 a rear view, of a spring-hinge containing my improvements. Fig. 3 is a detail view of the same when the spring is let down and exerting its tension on one leaf alone. Fig. 4is a detail view of the same in a position intermediate between those shown in Figs. 1 and 3. Fig. 5 is a detail view of the collar B, and Fig. 6 is a detail cross-section showing the arrangement of the collar 13.
The object of my invention is to provide a spring-hinge which by a simple adjustment may be converted into asimple hinge without springresistance to its opening or closing, and which can be as readily reconverted into a springhinge again.
I have devised asimple device whereby the spring to which it is applied can be transformed to and from a simple hinge without unwinding the spring and without material, change in its tension.
My invention consists in attaching one end of the spring in aspring-hinge to a collar or ring provided with a projection or stop having an inclined or cam surface, and which may be made to engage against either of theleaves of the hinge, as will be hereinafter more particularly described.
In the drawings, A A are the leaves of a hinge united by the ears a a in any appropriate manner. The usual coiled spring, 0, is inserted in the hinge,with one end, 0, hearing against one of the leaves A, and with the other end, 0, rigidly attached to the ring or collar B,n1ounted upon the pintle or pin running through the adjacent car a. The collar B is provided with the cam-shaped projection or stop I), which projects sufficiently to bear upon its rear or vertical side against the rear edge of the leaf A, as shown in Fig. 3. The spring is inserted in this position under substantially the full tension required; but as both the projection 11 at one end of the spring and the end 0 at the other end of the spring bear against the same leaf A the leaves may be opened and closed, as in a simple hinge,
without any spring-resistan ce. The other leaf, A, however, is provided with a notch or projection, a and the collar B with means for revolving it. In the form illustrated in the drawings this is a hole, notch, orrecess, 1),
into which a nail or pin can be inserted to turn it.
NVhen it is desired to convert the hinge into a spring-hinge, it is only necessary to give the collar B a partial turn or revolution,when then earn side of the projection b rides under the notch c", compressing the spring axially, as shown in Fig. 4, until the stop II has passed the stop a, when the axial tension of the spring brings the stops into. engagement, as shown in Figs. 1 and 2. The radial tension of the spring has thus been changed at its upper end from the leaf A to the leaf A, so that the spring now bears equally against the opposite leaves, converting it into a spring-hinge. It is reconverted into a simple hinge without spring-resistance by simply pressing the pro jection b downward,-as shown in Fig. I, when it passes around again to a bearing against the rear edge of the leaf A, as shown in Fig. 3. It is obviously immaterial whether theinclined or cam surface be on the stop I) or its corresponding stop a. This inclined or cam surface upon the stop contributes materially to the convenient working of the parts, and is an important element in my invention.
The hinge described is of the simplest possible form, cheap in construction, and durable and effective in operation.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is
In a springe-hinge, the combination of the leaves with a coiled spring, one end of which is connected with one leaf and the other end of which is attached to an adjustable collar mounted adjacent to one of the inner ears of the hinge and provided with a cam-shaped stop bearing alternately against either of the leaves of the hinge, whereby the radial tension of the spring is applied wholly to one leaf of the hinge, or may be changed to apply equally against both leaves, and whereby such change in the adjustment is effected by the mere rotation of the collar, substantially as described.
DANIEL G. STOVER.
HARRY BITNER, T. S. E. DIXON.