US959047A - Drive-chain. - Google Patents

Description

W. J. BELGHBR.

DRIVE CHAIN.

APPLICATION FILED DEC. 16, 1909.

Patented May 24, 1910.

I INVENTOR.

A TTORNEYJ',

to illustrate the UNITED STATES PAEENT OFFICE.

wanna J. BELCHEB, or naa'rronn,

COI T-NECTICUT, ASSIGNOR TO THE WHITNEY MANUFACTURING COMPANY, OF HARTFORD; CONNECTICUT, A CORPORATION OF Patented May 24, 1910.

ONNECTICUT. muvE-cnam.

959,047. I Spedifloltion of Letters Patent.

Application filed December 16, 1909. Serial No. 533,423.

To all whom it may concern:

Be it known that I, WARREN J. BnLoIrnR, a citizen of the United States of America, residing at Hartford, in the county of Hartford and State of Connecticut, have invented new and useful Im rovements in Drive- Chains, of which the ollowing is a specification.

This invention relates to drive-chains of that type in which one of the link elements consists of oppositely disposed side-plates and non-rotatable pivot pins extending through the side-plates near the ends thereof, the other link element consisting of oppositelydisposed side-plates like the first but having bushings extendin through the plates near the ends thereo the length ,of the bushings being equal to the width of the links, the pins of said first named links extending through the bushings of said second named links, these links being altemately arranged end to end by passing the pins of one link through the bushings of the other to constitute a chain; certain other link members, to be referred to further on, are embodied in the chain construction, but it is sufiicient for the present purpose to state that the link elementsbein constructed as above described, it would 0 viously be impossible to separate the chain at any point without driving out one pin and one bushing.

The object of the resent invention is to provide means for e ecting the separation of a chain of the above described type at some point in the length thereof conveniently and quickly, and without the use of special tools.

The invention is illustrated in the accompanying drawings, in which;-

Figure 1 is a sectional plan view of a part of a chain of the type above referred to, the plane of the section being substantially on the axis of the pivot-pins, certain parts thereof embodying the invention being shown in separated relation to the chain. Fig. 2 is a side elevation of the complete chain showing that side thereof to which the retaining clip is attached to the pivot-pins. Fig. 3 is a side elevation like Fig. 2 which shows the retaining clip in another osition manner of its application to or removal from the endsof the pivot:

p The chain to which the application of this invention is necessary to easily eifect its so aration at some point thereof is made up of pivot'ally united link elements one of which consists of the side-plates a which are oppositely disposed and connected together by )ins b winch-arc non-rotatably secured in t c side-plates a near the ends of the lattcr, this noi'i-rotatable connection being attained by flattening one side of that portion of the pins that extends through the plates, said flattened portion being indicated by c. The second link clement consists of the side plates (Z oppositely disposed one to the other and having bushings c therein extending through the plates at or near the ends thereof and being non-rotatably secured in said sideplatcs. 'lhcsc two link elements are connectcd together end to end in overlapping relation, as shown in Fig. l pariicularly,- that one of the links consisting of the sideplates (Z and the bushings a fitting in betwcen the two side-plates a of the other link with the pins 7) of said other link extendiin through said bushing, the pins (2 being pref crably headed over to secure them in the side-plates.

A glance at this construction, as illustrated in Fig. 1. will make apparent the difficulty of se arating a chain so constructed, and as state to overcome this difliculty, is the object of the present invention. complished by means of a removable link comprising the side-plates a and the pins 7) shown in Fig. 1 as separated from the rest of the chain, the 0nd in one of said plates permanently, means being provided for romovably securing the other side-plate a to the opposite end of said pins, and in the provision of means to secure the bushing 6 through which the pin 1) extends to one of the pins above referred to, to the end that when said side-plate a is removed from the chain one pin 6 will be withdrawn with it from a bushing 6 while the bushing through which the other pin extends will be secured to it in a manner to effect the withdrawal of the bushing with the pin, as it is only b the withdrawal of one of the bushings that a separation of the various elements com rised in the two links can be effected. All of the bushings, except the one which is withdrawn from the chain on the pin 6 just described, are nonrotatably secured in the side-plates d, the bushing which is withdrawn with the pin 1) however is removably fitted into the plate d,

pins being secured by one and said bushing may besecured to thepin b in any suitable manner which will not obstruct its free rotation thereon. A desirable manner of securing the bushing on the pin is shown in Fig. 1, and it consists in fitting a thin washer f over the end of the pin tightly, which washer will bear against the end of the bushing to retain the same in proper osition on the pin. Preferably, the end of t e bushing is counterbored, as shown at g, to receive the washer.

In the drawings, all of the bushings e have been shown as made in two parts, each of which extends from one of the side-plates to the longitudinal center line of the chain. This feature, however, has no relation to this invention and the bushing may be made either as shown herein or as consisting of one piece extendin from one side-plate to the other, as desire When that portion of the link shown in Fig. 1 is placed back in position in the chain, the free ends of .the two pins 6 will extend beyond the outer surface of the plates (1 far enough to ermit mediately under the removable side-p ate a, shown in Fig. 1, and still leave room on the ends of the pin for the application of a retaining clip, such as is shown in section immediatel under the removable side-plate a. Fig. 1, t is clip being indicated as a whole by h. The clip is also shown in a locked position on the pins 6 in Fig. 2, and in unlocked position'in Fig. 3.

Any ty e of a lockin clip or retaining clip may e used instea of the one shown, for the invention does not require the ap plication of any particular t pe of clip to make it operative, it being on y necessary to use a device which shall retain the removable plate a in position after it has been applied to the free end of the pins (1 of the re movable link.

The retaining link shown herein comprises one member m which is forked at one end to enter a circumferential oove 0 in one of the pins, the other end 0 said member having an opening p adapted to sli over the top of the other removable pin thereby locking in position a second forked member 9 pivotally connected to the member m at 1", this forked member q fitting a groove 0 in the other in 'd in the same manner as that describe in connection with the member m.

To supplement the side-plates a and the side-plates d of the two links of the chain,

p10 ed which are substantiall coextensive wit the plates a and 11, these ink members being preferably arran in alternate relas tion one to the other; is at is the link members abem fitted over the bushings throu h which bot "of the pins of the same'si eplates a extend; whereas, the link members t, alternating with the members a and extending in opposite directions thereto, fit over the bushings throu h which the adjacent pins of separate dinks extend. In other words, we may assume that the sideplates a and the pins b constitute one link element, and the side-plates d and the bushings e coristitutelinkelements which con nect together the others and the link members s and t are so distributed as to be equally divided between the links which comprise the side-plates a and the links which comprise the side-plates d.

What I claim, is

A drive-chain consisting of links comprising oppositely disposed side-plates and nonrotatable pins extending throu h the sideplates near the ends thereof, an other links comprising oppositely disposed side-plates and non-rotatable bushings extending through the lates near the ends thereof, a pin of one 0 said links extending through a bushing of the other link to constitute a chain, one of the side-plates having the pins secured therein, being separable from its opposite side-plate, and one of the bushin of the other link being secured to one of t e pins in said separable plate whereby the re- WARREN J. B'ELCHER.

Witnesses:

K. I. CLEMONS, HARRY W. BOWEN.

-a number of link members a and t are em -moval of said plate will withdraw one

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