US1172574A - Connecting-rod. - Google Patents

Description

F. R. WHITE.

CONNECTING ROD.

APPLlCATlON man JUNE 26. 1915.

Patented Feb. 22, 1916.

o M M W Franklin E. Wkiife.

B y W A TTOR/VE Y8 NOGRAPH c .T TED STATES FFXCE.

FRANKLIN R. \VHITE, WATERBURY, CONNECTECUT, ASSIGNOR TQTEE PATENT BUTTON COMPANY, OF NATERBUBY, CGNNECTICUT, A CORPORATION 03 CON- NECTICUT.

CONNECTING-BOD.

Specification of Letters Patent.

Patented Feb. 22, 1916.

To all whom it may concern Be itlcnown that l, FRANKLIN 13. WHITE, a citizen of the United States, and a resident of lVaterbury, in the county of New Haven and State of Connecticut, have made and invented certain new ,and useful improve ments in Connecting-Rods, of which the following is a specification.

My invention relatesto connecting rods or pitmen of the kind or type commonly designated as longitudinally yieldable pitmen, and which include a spring or equivalent yieldabl element through which force is transmitted when the rod is in use, to the end that the rod may yield in case excessive resistance is encountered by the device or element to which motion is communicated or in case for, any reason the force transmitted through or along the rod becomes exccssive.

My improved connecting rod is designed with especial reference to use in button attaching machines to adapt the same for use with fabrics'of different thicknesses or fabrics made up of two or more thicknesses of material. In such machines the button while being attached is pressed firmly or in ury to the button has to be avoided,

Btth these ends are secured in the use of my improved conn cting rod, for the length thereof is made such that when the machine operating upon a fabric of the normal or average thickness the button will be pressed against the fabric with a given predetermined force, while if a thicker fabric is used, or one comprising two or more thicknesses of aterial, the rod will yield before the plunger is pressed against the button with sutlicient force to crush or injure it. It will be understood, however, that a connecting rod made in accordance with my invention is capable of general use, and is not limited to the use above suggested; and that while the drawing accompanying and forming a part of this application illustrates the preferred embodiment of ,my invention the same may be variously modified and embodied in other specific forms by those skilled in the art to which my invention relates.

In the drawing: Figure 1 is a view showing my improved connecting rod in side elevation; and Fig. is a view showing a section of the same taken upon acentral longitudinally extending plane indicated by the line 22, Fig. 1, the parts being shown on a larger scale than in Fig. 1. V

in the drawing, the reference numeral 3 designates a suitable cage having sine bars a and arms 5 at its upper end through which one end. of the connecting rod may be connected with an operating member or a member to be operated. The cage in question is designed to contain a coil spring 6 through which force is transmitted when the rod is in use; and the same is provided. with a guide 7 at its upper end and formed integrally with the body of the cage whereby its position is fixed relative to the case, and with a removable guide 8 located at its lower end and in threaded engagement with the cage. The upper end of the spring abuts against the guide 7 as shown.

The reference numeral 9v designates a rod having, an eye 10 the other end of the c nnecting rod may be connected with an element of a machine to or from which motion is to be communicated, and which rod extends through the removable guide 8 and is provided with an extension 11 of reduced cross-section which extends through the c il spring and cage aforesaid and into the fixed guide 7, whereby the rod is guided as i moves l n itudinally of the cage when suiiicient resistance is enc untered to c mpress and shorten the spring 6. It'will be unde stood. howerer, that the spring acts n rmallv as a t ansmitting member of fixed length. and that the force of the spring is o ercome and the rod moved indep ndent of the cage only in case excessive resi ance is enc untered by the element to which motion is communicated throu h or by means of the rod or pitman con idered as a whole.

The rod 9 is provided with a threaded shoulderlZ at the lower end of the reducedextension 11 which sh ulder carries an internally threaded collar 13 which abuts against the upper or inner end of the removable guide 8. and which collar is firmly supported. upon the rod by engagement withthe threads and by the ledge 1% at the. lower end of the thread. The upper end 15 of the shoulder 12 preferably terminates in the same plane as the upper end of the collar at its lower end whereby 13, so that the lower end of the spring rests upon both the upper end of the collar and the end of the shoulder.

It will be appreciated that the thrust transmitted through the rod is taken up by the collar 13, and that a strong connection has to be provided between the rod 9 and the collar in order that the collar may not become loose on the rod, or possibly broken when the device is in use. In my improved connecting rod the collar is supported by both the threads upon the shoulder 12 and the led e 1% at the lower end thereof; and, in addition, in case the upper end of the shoulder bears directly against the lower end of the spring, as in the form of my invention illustrated, the thrust trans mitted through the connecting rod considered as a Whole is distributed between the collar and the shoulder 12, which shoulder, as will be understood, is formed integrally with the rod 9; whereby excessive strength is provided for the elements through which force is transmitted from the rod 9 to the spring and cage.

Having thus described and explained my invention. 1 claim and desire to secure by Letters Patent:

1. in a device of the class described, an eitngated cage adapted to contain a spring, a fixed guide at one end of said cage, a removable guide located at the opposite end of said cage; a rod extending through said removable guide and having a shoulder, and an extension of reduced diameter, which extension extends through said cage and into said fixed guide; a collar located upon said shoulder and abutting against the inner end of said removable guide; and a coil spring located Within said cage and surrounding the reduced extension of said rod, one end of said spring bearing against said fixed guide and the other against saio collar and the inner end of said shoulder.

2. An apparatus of the class described comprising a cage adapted to contain a spring, guides at opposite ends of said cage forming spaced confronting shoulders, a rod extending through and shdably engaging; the side Walls of one of said guides, said rod being provided with a shoulder and an extension projecting from said shoulder coaxially with said rod, said extension being of reduced diameter and slidably engaging in the otherof said guides, a collar located upon said shoulder and abutting against the inner end of one of said guides. and a coil spring located Within said cage surrounding the reduced ex ension of said rod, one end of said spring bearing against sait collar and. rod shoulder, and the op aosite end bearing against one of said guides.

Signed at Waterbury, in the county of New Haven and State of Connecticut, this 8 day of June, AfD. 1915.

FRANKLIN R. WHITE.

Witnesses:

JULIA A. Caesar, KATHARINE A. RUBEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, IDn C.

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