US443057A

US443057A - Michael redlinger

Info

Publication number: US443057A
Authority: US
Publication date: 1890-12-16
Anticipated expiration: 1907-12-16

Description

(No Model.)

M. RBDLINGBR. SPRING HINGE.

No. 443,057. Patented Deo. 16, 18901 a UNITED STATES PATENT OFFICE.; y

MICHAEL REDLINGER, oE EREEPoRr, ILLiNois, AssicNoR ro CHARLES MORGAN, ALBERT RAUMGARTEN, AND EDGAR n. MORGAN, ALL or SAME PLACE.

SPRING-HINGE.

SPECIFICATION forming part of Letters Patent No. 443,057, dated December 16, 1890.

Application filed August 14, 1890. Serial No. 361,976. (No model.)

.To @ZZ whom t may concern:

Be it known that I, MICHAEL REDLINGER, a resident of Freeport, in the county of Stephenson and State of Illinois, have invented certain new and useful Improvements in Spring-Hinges; and I do hereby declare 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 pertains to make and use the same. l

My invention is in spring-hin ges that when the door is opened beyond a certain point reverse and then tend to throw the door stillV farther open.

In the accompanying drawings, Figure l is a plan of the hinge. Y Fig. 2 is a plan of the opposite or inner side of the same. Fig. 3 is a section on the line 3 3, Fig. l.

The body of the hinge consists of two leaves A A', connected at each end by ears B B', provided with short pintles C C at some distance from that face of the hinge that in use rests against the door and casing. Between the pairs of ears lies a spring D, coiled about an arbor E, lying in a plane transverse to the pintle-line. The arbor is mounted in a frame F, rigidly connected with the leaf A, and preferably so formed as to cover the outer side of the coil. Through this arbor alone thepower of the spring is exerted upon the leaf A. The arbor-bearings may be complete circles in cross-section, or may be open uponv the inner side to permit casting Without The ends G G of the coil project oppositely upon opposite sides of the spring, and are bent into hooks Il Il', which engage, respectively, rods or loops I I', both upon the leaf A and upon that side of the pintle opposite to the leaf A. The spring is so formed that tension must be put upon it in order to put it in engagement with both rods or loops. When thus in engagement, its whole force acts through one hook upon the leaf A and by reaction an equal force is exerted through the opposite hook, and tends, like the direct force, to press the leaf toward the plane ofthe door, thus far supposed to be closed. The effect upon the opposite leaf is precisely the same as if equal forces dren1 the hooks in the opposite direction-that is, they act through a lever-arm equal to the distance of the hooks from the pintle and tend to close the doorfor no matter at what point the force is transmitted to the leaf A, it is in effect applied at the hooks, which are at one side of the pintles, and the latter act as a fulcrum, resisting bodilymotion of the leaf A.

In practice it is immaterial which leaf is secured to the door; but for convenience in description, let it be supposed to be the leaf A. Now when the door is opened one hundred and eighty degrees the rods or loops I I are carried bodily about the pintle-line to its opposite side, and during the whole time are drawn toward the plane of the closed door by the action of the spring. In so moving, their distance from the pintle-line first increases and then decreases, and the strain exerted through the hooks at first acts upon one side of the pintle-line and tends to close the door, but later acts upon the opposite side and then tends to open it. Evidently there is a point Where the strain acts upon neither side, but passes directly through the pintle-line, giving a dead or reversing point Where there is no tendency to swingtihe door in either direction. The location of this point depends upon the place of the rods or loops upon theirleaf, and they are usually so placed that the point may be reached when the door has opened about one hundred and twenty degrees.

The spring is shown as midway between the ends of the hinge, perpendicular to the pintle-line, and projecting equally to the right and left of that line, and also as parallel to the place of the closed door; but it is not essential that these constructions be exactly followed.

l. The combination, with suitably connected hinge-leaves, of a spring-coil secured upon one of said leaves, Wit-h its axis transverse to the pintle and having both its ends in engagement with the opposite leaf at one side of the pintle-line.

2. The combination, with twosutably-oon- In testimony whereof I have signed this nectedhinge1eaves,ofaspring-albormounted specification in the presence of two subscribupon one of said leaves in a line transverse to ing Witnesses. the pntle-line, and a spring-coil Wound about MICHAEL REDLINGER. said arbor and having both its ends in en- Witnesses: gagement with suitable rods olloops upon the PHIL. SCHRENKLER, opposite leaf at one side of the pntle-line. ALBERT HERBIG.