US214213A - Improvement in door-springs - Google Patents

Description

L. A. WARNER.

Door-Spring.

No. 214,213.` Patented April 8,1879.

1-1-11 -flfnflellllnwwmm i llil UNITED STATES LEMAN A. WARNER, 0F FREEPORT, ILLINOIS.

IMPROVEMENT IN DOOR-SPRINGS.4

" 'Specification forming part o f Letters Patent No. 214,213, dated April 8, 1879.; application filed Apr-i1 24; 187,8.

To all whomz't may concern.-

Be it known that I, LEMAN A. WARNER, of Freeport, in the county of Stephenson and State of Illinois, have invented a new and useful Improvement in Door-Springs, which improvement is fully set forth in the following specification, reference'being hadl to the acdoor and the door-jamb, and in dispensing -with the spring'B of the old device, thus ref.

llieving the spring D of the counteracting force of the spring B when the door is held Figure 1 shows a horizontal sectional view of the spring with the door open, closed, and at a dead-Qenter, (by the dotted `lines,) or when v the spring acts directly across-'the line of the ldoor-hinge. Fig..2 is an upright view of the spring on the door with the door closed. Fig. 3 shows the same with the door open.

A is a hinge-plate or half-hinge, screwed -`fast to'thedoor-jamb, inwhich .the-.sprin.g

works, as seeny at b b, Fig. 3. C C are long arms extending from the hinge A to coils D D, theend's of which,at b b, Fig. 3, are bent at right angles, tb serve. as journals and form the hinge, as seen atb b, Fig. .2, in connection with the hali:' -hinge A. lC' C! are shorter `arms, .extending from the J coils ,D-,D to the A,loop E.

E is a; loop, the ltwo-sides ofi-which 'are bent as near as may beat right angles,.leaving a .space between, straight, to serve as a journal, 4as -in Figs..2 and 3, at E E. -D D are coilsprings,.n1ade in'thc same wire as the arms.

'a is a hook, made ofsuitable size to receive -the loop or journal E, for which it serves as a box or bearing. The hook is screwed fast to 'the door, and connects the spring to the door, serving'` the ,triple purpose f of fastening the spring to the door, holding the spring in an upright position, and -providing a pivotjoint' that will 'not' wear out as a curvedor link joint is liable to.

'The ends b b of the arms G C are tted to and work in the hinge A in a similar manner, and for the same purpose-viz., to keep the spring in an upright position and 'provide a pivot-joint. The arms C C are also bent so as to spring together, to hold the ends b b in the hinge A. A

eis the. hinge ofthe door. d is a metal ring, (used to take the place of the wood enlargement in the old device,) through which a wood pin is driven tight, so as to keep the pin in place, the object being to nlake'room for more coil of wire and keep the whole device more compact.v

The' arms C C are crimped or bent, seas to press tighten the ring 11, thus-holding the coils on the pin, while the loop or journal E is left wide enough for the purpose stated above-viz., holding the spring in an yupright position.

The spring is made of one piece of wire, the ends and center being bent, as before stated, and the coils made in the proper position in relation to the ends of the arms and loop E.. The ends b b of the arms C (J are placed in the hinge A, and the spring then stands as shown in Fig. 1, A D and D to E, different positions, shown by dotted lines.) he tloop or journal E is pressed between the arms C G against the door and placed in the hook a. The loop E and the arms C C may be unhooked and rehooked at pleasure without removing screws.

When in position the pressure of the spring is in a direct line from the hook a to the hinge rA wherever the door stands. The spring acts nearly on the principle of a jointed orcom- -pound lever, the coil serving as one end of the lever; hence, as the spring shuts up by closing the door, the force of the spring is increased, thus holding the door tight, and when the door is swung open the pressure from a to A is lessened, while the tension of the spring is increased, thus making the pressure on the door very nearly uniform, until the hook a is carried back, so that a line from a to A will pass over the center of the doorhinge, when the door will stand still, and if PATENT OFFICE.

pressed slightly beyond that point the spring and the hook a, all constructed :md used subwill press and hold it open. staintially as and for the purpose described v What I claim as new, and desire to secure :md shown.

by Letters Patent, is-

The combination of the arms C C, provided Witnesses: with the bent ends b b, the coil-springs D D, J. A. GRAIN, arms C' C', and loop E, with the half-hinge A Anm F. NORTON.

' L. A. WARNER.

Images