US375803A - Benoni colvin and john - Google Patents

Description

(ModeL) V B. GOLVIN & J. WOLFLEY.

' SPRING HINGE. No. 875,803. Patented Jan. 3, 1888.

WITNESSES: INVENTOR nloLilhogmpher. Washinglon D C ATTORNEY 3 UNITED STATES PATENT OFFICE.

BENONI COLVIN AND JOHN \VOLFLEY, OF FREEPOR'I, ILLINOIS; SAID' WOLFLEY ASSIGNOR, BY DIRECT AND MESN E ASSIGNMENTS, TO THE LUOE ADJUSTABLE SPRING HINGE COMPANY, OF PORT \VASHING- TON, \VISOONSIN.

SPRING-HINGE.

SPECIFICATION forming part of Letters Patent No. 375,803, dated January 3, 1888.

ihl'odel.)

To aZZ whom it may concern:

Be it known that we, BENoNr GoLvIN and JOHN W OLFLEY, residents of Freeport, in the county of Stephenson and State of Illinois, haveinvcnted certain new and useful Improvements in Spring-Hinges; and we do hereby dc clare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itper' t ains to make and use the same.

Our invention relates to improvements in spring-hinges, and is fully described and explained in the following specification and shown in the accompanying drawings, in WhlCl1- Figure 1 is a plan of a complete hinge. Fig. 2 is an end view of the leaves of the hinge, looking in the direction indicated by the arrow a, Fig. 1, the ratchet-wheel 2 and pawl H being shown in their respective positions, and the pintle L being removed; Fig. 3, an external end view of the leaf B, looking in the direction indicated by the arrow at, Fig. 1, the spring-retaining cap llLwith its lugs P S, being in place thereon; Fig. 4, an internal and Fig. 5 an external elevation of the spring-cap I; Fig. 6, a top edge view; Fig. 7, an external elevation, and Fig. 8 an internal elevation, of the cap M shown in Fig. 3; Fig. 9, a plan, and Fig. 10 a transverse section, of the fluted pintle L, the tip E being removed.

In these views, A B are the leaves of the surface form of our improved hinge, the ears 0 O of the leaf A being outside of the ears D N of the leaf B, thus making the hinge either right or left hand. Through each of the ears OD is a central circular pintle-opening, as shown in Fig. 2, and on the inner face of the ear 0 is an inwardlyprojecting cylindrical gudgcon or pintle of such length as to pass through the ear N and project beyond the inner face thereof, the ear N being formed with a radial slot extending from the center to the circumference.

Against the inner face of the ear N rests a spring-retaining cap, M, having acentral hole, a, which rests on the pintle or gudgeon of the ear 0, and two projecting lugs, P S, one of which lies in the radial slot of the ear N, while the other impinges on the edge of said ear. The cap M is thus connected with the ear N at three point'sone in the center and two at the circu m ference-and is thusguarded effectually against rotation with reference to the car -N and leaf B. Onthe inner face ofthe cap M is an annular flange, W', concentric with the opening a, and adapted to receive the end coil of a spring, Z, of ordinary form, theend ofthe coil being held against rotation on the flange WV by means of a lug, U, on the face of the cap. (See Fig. 8.) v

Against the inner face of the ear D rests a second spring-cap, I, whose outer surface is a plane, permitting free rotation of the cap with reference to the ear D, while its inner face is provided with an annular flange, K, and alug, U, corresponding in position and function to the parts W U of the cap M. In the center of the cap I is a non-circular hole, V, of any desired form, and through the ears 0 D and the hole V passes a pintle, L, whose body is of a cross-section corresponding to the form of the hole V. The inner end of the pintle L rests in the space within the annular flange WV of the cap M,while its outer end is provided with a thumb-piece, E, by means of which it may be readily rotated. That portion of the pintle which lies in the ears O D (being the part lettered o in Fig. 9) is preferably cylindrical, and outside of the cylindrical part c is a short section, b, of any non-circular crosssection. On the part b is a detachable ratchetwheel, Q, having a central hole conforming to the part of the pintle on which it rests, and a pawl, H, pivoted on a pin, G, on the leaf A, co-operateswith the ratchet-wheel to hold the pintle against rotation whenever desired.

The operation of this device is evident. The leaves AB being placed in position for connection, the caps M I are placed on the ends of the spring Z,and the caps and spring are then set in their proper places between the ears D N. The ratchet-wheel Q is then placedin position against the outer face of the ear 0, and the pintle L is passed through the ratchetwheel and the ears 0 D, its end entering the the spring.

socket in the inner face of the cap M, the part b of the pintle lying in the ratchet-wheel, and the part a being in the ears 0 D. The cap M connects one endlof the spring Z with the ear N 1n such a way that the end of thespring cannot be rotated with reference to said ear, and the other end of the spring is so connected with the cap I that the rotation of said cap twists If the pintle L, the ratchetwheel Q, and the capl be rotated in the direction indicated by the arrow on the cap in Fig. 1 and by the arrow on the ratchet-wheel in Fig. 2, the spring is coiled closer, and the reaction tends to hold the leaves A B in the position shown 111 Fig. 2. The pintle maybe turned sufficiently to put any desired tension on the spring, and may then be secured by means of the pawl H. After tension is put on the spr ng, the hinge operates as any other single actlng spring-hinge, and when it is desired to separate it the operation is just the reverse of that described for putting its parts to gether.

The hinge above described is in many respects the same as that shown in our patent,

No. 318,418, of May 19, 1885. In the hinge shown herein the pintle L'is longer than the corresponding part shown in the patent, and this added length gives the end of the pintle a bearing in the cap M, whereas in the form shown in the patent the end of the pintle was unsupported. Thespring-cap M is altogether different in form and method of connection from the corresponding element in the hinge covered by the patent, and the ratchet-wheel Q is made detachable in the present form of binge, while in the patented form the pintle and ratchet-wheel were cast in a single piece. The detachable ratchet-wheel can be made much more perfect than the same part east integrally with the pintle.

I aware that it has been proposed to pro vide one end of a spring-hinge leaf with an ear formed with an annular slot, and to combine with the same a spring supporting cap lying in contact with the ear, and having a lug adapted to enter said annular slot and to be adjusted therein for the purpose of varying the tension of the spring. The annular slot in said proposed structure is, however wholly outside of the axial opening in the ear, and is separated therefrom by a portion of the metal of the ear, and the lug entering said slot is out of contact with the hinge-pintle and forms no part of the bearing thereof.

Having now described and explained our invention, what we claim as new, and desire to secure by Letters Patent, is

l. The combination of the leaf B, provided with the ear N, formed with a radial slot whose inner end forms a portion of the axial pintlebearing of the ear, the spring-cap lVI,having on one face the lug P, adapted to enter the outer end of said radial slot and to complete said pintle-bearing, and on its opposite face suitable projections,substantially as described, for receiving and holding in place the end of a coiled spring, the spring Z, whose end engages with said projections, and means, substantially as shown and described, for supporting the opposite end of said spring.

2. The combination of the leafB, having the axially-bored ear D and the radially-slotted ear N, the leaf A, having the centrally-bored ear 0, and the ear 0, having on its inner face a gudgeon lying in the inner end Of the slot in the ear N, the cap M, resting on the inner end of said gudgeon, the pintle L, passing through the cars 0 D and entering a socket in the cap M, the cap I, mounted on the pintle and rotating therewith, and the spring Z, supported by the caps M I, substantially as shown and described, and for the purpose set forth.

3. The combination, with the leaves A B, the cap M, connected rigidly with the leaf B, and the pintle L, passing through and connecting said leaves, of the cap I and ratchetwheel Q, both rotating with the pintle but detachable therefrom, the spring Z, mounted between the caps I M and held in place thereby, and the pawl H, cooperating with the ratchetwheel Q, substantially as shown and described.

In testimony whereof we have signed this specification in the presence of two subscribing witnesses.

BENONI OOLVIN. JOHN \VOLFLEY. \Vitnesses:

L. M. Gunmen, J. A. GRAIN.

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