US309104A - Spring hinge - Google Patents

Description

(Mod e1.)

J. H. SHAW.

SPRING HINGE,

No. 309,104; Patented Dec. 9;'1884..

' end of the part F is made tubular.

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J OHN H. SHAWV, OF NEW? HAVEN, CONNECTICUT, ASSIGNOR TO EAR-GENT 82 CO., OF SAME PLACE.

SPRING HINGE.

SPECIFICATION forming part of Letters Patent No. 309,104, dated December 9, 1884.

(Merlot) T 0 to whom it may concern:

- Be it known that I, JOHN H. SHAW, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in SpringHinges; and I do hereby declare the following, when taken in connection withaeeompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings eonstitutepart of this specification, and represent, in-

Figure 1, a vertical sectional view; Fig. '2, a transverse section on line 00 00,- Fig. 3, a transverse seetion on line y y,- Fig. 4, a transverse section on line 2 z.

This invention relates to an improvement in that class of spring-hinges in which the two parts of the hinge are constructed with cars at their respective ends to set together, and so as to leave a space in the central part of the knuckle, into which space a spiral spring is introduced around the pintle, one end of the spring to take a bearing upon one leaf and the other end upon the other leaf, the action of the spring being to turn the two leaves together or open them, as the case may be, and according to the action of the spring, the objeet being to provide a means of adjustment for the spring, or its entire release, without longitudinally moving the pintle; and it consists in the construction as hereinafter de scribed, and more particularly recited in the claim.

A B represent the two ears of one leaf of the hinge, and C D the two cars of the other leaf, and in the usual form of construction, so as to leave a space between the intermediate cars, A B, for the introduction of the spring. These ears are bored to receive the pintle, also in the usual manner. The pintle is made in two parts, E F, and, as here represented, the part E is the top and F the bottom. The part F is constructed with a shoulder, a, to abut against the ear D, the body of the pintle fitting the two cars B D. The upper It is inserted upward through the ear D into the ear B. The other part, E, is of like shape, so as to pass through the two upper ears, A C, and with ashoulder, Z), to rest upon the top of the ear C. This part E extends downward, its lower end, d, fitted to enter the part F, as shown, and so that the part F forms a bearing for the lower end of the part E. The end 01, within the pintle F, is constructed with an an nular groove, 0. A screw, f, is introduced through the ear B of one part of the hinge into the tubular part F, and so that its inner end will enter the annular groove e in the part E. This screw f couples the part F of the pintle with one part of the hinge, and also prevents the part E from being withdrawn. Through the ear C-that is, the ear of the other part of the hingea pin, h, is intro duced to entera corresponding hole in the part E of the spindle, and so as to couple this second part of the hinge with the part E of the pintle. Thus it will be seen that the part F of the pintle is coupled with one part of the hinge and the part E with the other part. On the pintle, between the cars A B, is a longitudinal groove, i. Around the pintle, between the ears A B, a helical spring, H, is introduced, one end, I, turned inward to enter the groove 2'' in the part E of the pintle. The other end, an, is arranged to bear upon the leaf of the hinge with which the part F of the pintle is engaged. By this usual arrangement of the spring one end of the spring bears upon one leaf directly and the other end upon the pintle which is engaged with the other leaf.

The head I, or exposed portion of the part E, is constructed of polygonal shape, as at a, or may be with holes 1), by which that part of the pintle may be turned by applying a wrench to the polygonal portion a, or a leverinto one of the holes 1).

To adjust the spring the pin it is removed and the part E of the pintle turned until the re quired tension ofthe spring is attained. Then the pin it is introduced to enter the corresponding hole in the part E. The turning of the part E winds the spring, and the introduction of the pin it couples the pintle with its part of the hinge, holding the spring under tension.

The method of turning the pintle so as to wind the spring is a well-known device, so also is the longitudinal groove t in the pintle, which enables the pintle to be introduced at one end, pass down to the opposite end of the 5 other, and introducing the screw or pin f through the one part of the hinge into the said other part of the pintle, and into an annular groove on said one part, the one part of the pintle is permitted to turn on the other, yet

IO, accidental separation of the two parts is pre vented. If, however, at any time it is desir able to separate the two parts of the hinge, it is only necessary to remove the screw or pin f and the pin h. Then the pintle may be with- I 5 drawn. This construction of pintle also makes a strong and firm joint, and the hinge, as a whole, is not liable to derangement.

I clain1 In a spring-hinge substantially such as de- 20 scribed, the combination of the two parts of the hinge, each constructed with ears, which set together form the knuckle, the part F of the pintle introduced through the cars at one end and secured to one part of the hinge, its inner end of tubular shape, the part E of the pintle introduced through the other end and detachably secured to the other part of the hinge, its inner end constructed to enter the tubular portion of the part F of the pintle, and also constructed with an annular groove, the pin f, which secures the one part of the hinge to the part E of the pintle, arranged to enter the said annular groove in the part E of the pintle, and a spring around said pintle, one end arranged to take its bearing in the part E of the pintle, the other to take its bearing on the part of the hinge with which the part E of the pintle is engaged, substantially as described.

JOHN H. SHAW.

WVitnesses:

Jos. O. EARLE, JOHN EDWARDS, Jr.

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