US252470A - Spring-hinge - Google Patents

Description

(Model.)

G. M. JEWETT.

2'Sheets-Sheet 1.

SEEING HINGE.

Patented Jan. 17.1882.

, mmm

(Model.) I 2 Sheets-Sheet 2 4 G. M. JEWETT.

SPRING HINGE.

No. 252,470. l Patented Jan. 17,1882.

same.

UNITED STATES PATENT 'OFFICE GEORGE M. JEWETT, or UnionviLLE, oonNEcTi'cUr.

SPRING-mince.

SPECIFICATION forming part of Letters Patent No; 252,470, dated January 17, 1882,

Applicationfiled May 31, 1881. (Model.)

To all whom it may concern:

Be it known thatl, GEORGE lVLJEwE'rT, ot'

.Unionvil1e,in the county of Hartford and State of Connecticut, have invented a new and useful Improvement in Spring-Hinges, of whichv the following is a specification and description.

The object of myinvention is to provide a cheap and effective spring-hinge, which may be made so as to cause the door to swing either way when attached thereto, the use of the hinge being to cause a door to shut of itself when left open 5l and I accomplish this by the means substantially as hereinafter described, and illustrated in the accompanying drawings, in which- A Figure I is a front view of a double sprin ghinge made according to my invention with one of its leaves open. lFig. II is a side View of the same. Fig. III is a top view of the.

Fig. IV is a side view of the knucklebar and the cam connected therewith and with the actuating-spring. Fig. V is a top view of the same, with a part broken away to show the recess in the cam which receives the end of the knuckle-har. Fig. VI is a front view of a portion of one of the leaves of a double hinge.

i Fig. VII is a top view of the sanne..` Fig. VIII l,is a front view of one modification of a single hingeinade according to my invention. 1X isV an edge view of the same. top view of the same, showing its application to a door. Fig. XI is a side view of one modification of the cam which receives the end of the knuckle-bar, constructed for use with the modification of hinge shown in Figs. VIII and 1X; and Fig. XII is a top view of said cam.

1n the drawings having reference to a single hinge, as shown in Figs. VIII and IX, l denotes one leaf of the hinge provided with a projection,.as 2, at each end, which is drilled to receive a pivot, 4, and l5 denotes `the other lea-f of the hinge, which is provided with a similar, although somewhat longer, projection, as 3, at each end, also drilled to receive the Eigsame pivot 4, by which means these two leaves' are hinged or pivoted together. A trunnion, as 12, is made on the upper face o t' the lower projection, 3, and also on the lower face ofthe upper one, at a point just outside the pivot 4, and about Ona line with theleaf l of the hinge,

Fig. Xisa or if the trunnions are not useda holcis made at that point in' said projections 3 as shown at 16 in Fig. X, and a wire or spindle is secured therein extending from one projection 3 to the other, and rmly secured in both.

Extending out from the outer face of the leaf 1, and atits inner edge, is a post, as 7, and hung on the spindle or wireand preferably on each side, a brace, as 9, extending out from the inner edge ofthe leaf 151 Midway the length of said spindle or wire is a cam, as 6, which, in the construction of the single hinge shown in Figs. VIII,IX, and X, I have shown as made double, and in a single piece to straddle the brace 9;

vand in the end of this cam 6 is a cavity, as I4,

(shown in dotted lines,) to receivethe end of the knuckle-bar S. This bar I prefer tomake in `two parts, one smaller than the other, and having ascrew-thread on its exterior to turn into the threaded bore of the other and larger part,

x and one end ofthe bar 8 is inserted in a cavity,

as 1,8,f in the post 7, and the other end of the bar is inserted in a cavity, as 11i. This cam 6 may be made single, as shown in Fig. IV, or

double, as shown in Fig. XI, and when made single it is provided with a boss or bridge, as 12, cast on one side, as shown in Fig. IV, and

also ashort stud, as 5, cast'on the same side,

' spindle extends through the spring this may be found quite sufficient to give a good firm bearing for the spring to keep it in place.

In a single spring, or in one having only two leaves, each with a single post, 7, [use two coiled springs to each leaf, as shown in Figs. VIII and IX', in whichcase one is coiled in one direction, or is a right hand spring, and the other is coiled in the other direction, or is left hand.

In inserting the springs in place the ends of each spring are placed against the studs 5 with the bridges 12 inserted in the ends of the coil, at top and bottom, the cani being iirst put in place, as shown clearly in Figs. VIII and IX, and the wire or spindle is inserted through the holes made in the projections 3 to receive it,

and passed inside the springs 10, through the The purpose of brace 9 and cam 6, pivoting the cam to the brace, and securing the spring rmly in place between the projections 3, the holes in the latter receiving and securing the ends of the wire or spindle. The free end of the cam 6 is then moved away from the post 7 and the end of the knuckle-bar 8 inserted in the cavity 14 of the cam, and the other end of the bar inserted in the cavity 18 in the`post 7. The boss or stud 5 may be made circular in forni, if desired, and made of the full size of the end of the cani, as shown clearly in FigsIV and V.

It will be perceived that the bar 8 is not pivoted to any other part of the hinges, but when desired it may be easily removed from its sockets in the post and cam by holding the latter back against the spring, and the bar may also be lengthened or shortened by turning one part either out or into the other part more or less, to give quicker and strongeraction to the hinge in moving` the door. 4 v

In making large or double hinges it maybe found desirable to have two posts, as 7, one at the upper end and one at the lower end of each leaf, with a knucklebar, 8, and cam 6in connection with the post, as shown clearly in Figs. I- and Il,in which case the cams, as (i, may be made single, as shown. clearly in Fig. IV, and in this construction the brace 9 is provided with shoulders, as 5, which answer the same purpose as the studs 5 on the cam G-namely, as a bearing for the end of the wire spring 10.

It will be seen that I am enabled by my construction to use two springs to each leaf' of a hinge, and if at any time it should seem desirable that the hinge should not act upon the door with so much force to close it, v the end of one of the springs of one leaf may be disengaged from the stud 5, so that that spring will be inoperative as to any force exerted against the door, so that if the latter with hoth springs ot' a leaf in operation had been' closed too quickly by such disengagement of one of the springs it will be closed more easily and slowly.

It will thus be seen that bymaking the knuckle-bar 8 in two parts so as to make said bar variable in its length, and by making the hinge with two springs to each leaf, a great variety of adjustments as to the strength of each hinge in its action upon the door may be successfully made, and the hinge thus adapted to be used in various positions where other hinges of this class, but not made with this adjustable feature, could not be successfully used.

When the hingeis made-double, as shown in Figs. I, 1I, and III, to be used in connection with a. door which swings in both directions, the two outer leaves, 1, are to be secured, one to the door and the other to the door-frame, with the middle leaf, l5, operating as an idler between when the door is swung in one direction, and swinging with the door in the other direction.

It is evidentthat the brace 9 is not a necessary feature in the invention, inasmuch as its the same, nor any part thereof, irrespective of 7 5 a hinge made according to my construction as hereinbefore described.

In'the spring-hinges heretofore made the toggle portion of the hinge into which the springis harnessed is pivoted together, so that the pivoted parts cannot be disconnected, and in the use of hinges the doors to which they are secured, when swung about half-way open, will be held open by the reverse act-ion of the hinge. This is an undesirable feature, inasmuch as a person enteringisliable to open the door so wide as that it will be held open by the action of the hinge when he intends that it shall close, and supposes as he enters that it will close of itself. This objection is owing to the fact that the reverse action of the hinge takes effect too quickly in the natural swing of the door.

Myinvention entirely obviates this objec tion, as the reverse action of the hinge does not take effect unless the door is swung wide open, and for the purpose of being held open, and it is not therefore liable t0 be left open accidentally.

Having thus described my invention, what I claim as new is- 1. The combination, in a spring-hinge, of two leaves, one provided with a post projecting therefrom, and both leaves provided ateach end with a hinge-projection, which two projections are pivoted together, an-actuating- 'spring located between`and secured to the IOO upper and lower projection of one of said a projection, which two projections are pivoted together, a spring located between the upper and lower projections 011 said leaves, a cam connected with and secured to said spring, with a knuckle-bar having a loose socket-connection with said cam, and made in two parts, and adjustable as to its length,and connected with said post at the other end, substantially as described.

, GEORGE M. JEWETT. Witnesses: s

M. A. HILL, G. W. FRIsBIE,

IIO

IIS

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