US10477A - Haevey lull - Google Patents

Description

No. 10,477. PATENTED JAN. 31, 1854.

H. LULL. SHUTTER HINGE.

UNITED STATES PATENT OFFICE f HARVEY LULL, or SOUTH COVENTRY, CONNECTICUT, ASSIGNOB TO H. LULL AND RioHD.

PORTER.

SHUTTER-HINGE.

Specification of Letters Patent No. 10,477, dated January 31, 1854.

To all whom it may concern Be it known that I, HARVEY LULL, late of Wheeling, in the county of Ohio and State of Virginia, but now of South Coventry, in the county of Tolland and State of Connecticut, have invented certain new and useful Improvements in Self-Locking Hinges; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part thereof, in which Figure 1, represents the hinge as open and locked. Fig. 2 represents the hinge in its position when the shutter is drawn fromthe wall sufficiently far, to unlock it, and Fig. 3, represents the hinge whenthe shutter is closed.

There are several varieties of shutter and door hinges, the greater portion of which in being opened bring two inclined planes in action causing the shutter or door to rise,- the object being to cause doors especially to swing clear of the carpet. Some of these are provided with a fastening which is formed of a separate piece. Another method is to make a series of planes, which admits of the door rising and falling several times in the act of swinging it open and shut. I do not lay claim to any of these hinges, for they are almost useless for shutter hinges, for which purpose my hinge is especially designed.

It is well known that window shutters must swing into the window frames several inches before they come to their seats, and to use either of the class of hinges before mentioned, would cause the shutter to rise'up against the frame and bind, or else it must be cut away, which would admit rain snow &c. My hinge allows the shutter to swing around horizontally until it almost reaches the wall when it drops and locks. This is one distinguishing feature of mine over other hinges. Again my hinge is composed of but two pieces, each entirely of cast metal,

while the others which are self locking are composed of three or more, and indeed difference between my hinge, and those heretofore essayed, consists in my being able to use a cast iron spindle with perfect safety, from the fact that when the shutter is opened and locked, the force of the wind tending to close the shutter is taken entirely off the spindle and thrown upon two cast arn1sand in opening or closing the shutter its weight is partially taken upon two square shoulders, thus relieving the spindle which is really but adirectrix to the other parts, without taking the weight of the shutter upon it. For this reason I can safely rely upon the castiron spindle. contend, however, that cast iron spindles have not been used, but I do contend that they are liable to be broken by any sudden slamming of the shutter, as they heretofore had to sustain its entire weight. I do not assert that my invention consists of three distinct differences between what has heretofore been done, and what I have done, but I claim, so combining these differences, as toproduce in a hinge of two pieces, a very cheap, strong, and efiective self locking hinge, which has not been done before.

The nature of my invention therefore consists in the so forming of a self locking hinge, cast in two pieces, as that a shutter hung thereon may swing open or shut on a horizontal plane, and look when opened to I do not its limit, and so that also when locked open,

the strain shall be taken off the spindle and thrown onto cam arms, and thus effectually relieve the spindle from the force of the winds.

To enable others skilled in the art to make and use my invention I will proceed to describe the same with reference to the drawor shank of the hinge, extending from the 05 shoulder to the wing or plate, and projecting from two-thirds to three-fourths of its inclination from the face of the hinge. The other a, Fig. 3, is placed directly opposite, and extends the same distance from the center of the hinge, and faces, in the opposite.

direction to that b. The inclination of the planes should be about forty-five degrees at the extreme outer end and approach the vertical as they come nearer the center of the hinge. The shoulder is formed with the half next the arm standing even with the top of the planes, and the other half out down level with the bottom of the planes. The bottom half of the hinge inverted makes the top half by substituting the hole for the pivot. When a shutter hung on these hinges is thrown open, resting on the shoulders of the hinges, it neither passes over notches, nor up inclined planes, but swings freely around to a. position nearly parallel with the wall where the support of the shutter passes from the shoulders 0, (Z, Fig. 2, to the inclined planes, and the bottoms of the planes A, A, are brought to the tops of the planes B, B, as shown in Fig. 2, and the shutter is carried to the wall by its gravity on these inclined planes, and the hinge is locked as shown in Fig. 1, one half having dropped below its general position.

In closing the shutter, a slight force only i is necessary viz: to draw the shutter four or five inches to force it up the planes, when the support of the shutter is returned to the shoulders c, d, on which it rests and swings horizontally to its seat, entirely preventing the planes from coming in contact as it closes as shown in Fig. 3.

Having thus fully described the nature of my invention what I claim therein as new and desire to secure by Letters Patent, is,

The so forming of a self locking shutter hinge, cast in two pieces, as that theblind 0r shutter hung thereon may swing open or shut on a horizontal plane, and look when opened to its limit, and so that also when locked open, the strain shall be taken ofi from the spindle and thrown onto cam arms, and thus efi'ectually relieve the spindle from the weight or strain of the shutter, substantially as described.

HARVEY LULL.

itnesses W. A. LOOMIS, D. H. CLARKE.

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