US 1737823 A
Description (OCR text may contain errors)
PaintedA Dec. 3, 1929 UNITED "STATES PATENT oFFlcE y ALEXANDER BODLE, OF MISHAWAZKA, INDIANA, ASSIGNORj T0 DODGE MANUFAC- TUBING CORPORATION, F WILMINGTON, DELAWARE, A 'CORPORATION -OF DELA.-
WARE- oNvEYEa' CHAIN Application led Qctober 6, 1928. Serial` N'o. 310,723.
This invention're'lates to conveyer chalns.r The object is to improve such chains more particularly with reference tothe pivot'con. ne'ctions.
The invention will be explained by reference to an illustrative embodiment' thereof shown in the accompanying drawings, and will be pointed out in the claims.
In said drawings:
Fig. 1 is a planl view of a short length or section of a conveyer chain of one practicable construction, containing an embodiment of the invention.
Fig. 2is a side elevation thereof.
Fig. 3 is a side view vof one of the outside link bars.
v Fig. 4 is adetail view on an enlarged scale of one vof the locking pins for fastening the pivot pins. l A
Fig. 5 is a side view of one of the inside link bars. y
Fig. 6 is an enlarged perspective view of one of the pivot bushings.
A suliic'ient length of the illustrative chain 25 is shown in thedrawings to disclose the connections betweenseveral. links. In the construction shown, the links comprise pairs of `parallel link bars, alternate pairs arranged outside of and' overlapping with the others.
The inside link bars are designated in the drawings by the numeral 10, and the overlapping outside link bars are designated by the numeralll. The link bars at one side of the `chain are shown provided withattaching brackets 12 for attachment of cross bars (not shown) by which to connect the chain. with another parallel chain. It will be understood that such cross bars are commonly used to support loads conveyed by the chains.
The chain links are'connected by pivot pins 13 inserted through the outside link bars and 'through bushings 14 fitted in the inside link bars. Track rollers 15 are shown mounted on said bushings between the inside link bars.
The pivot pins 13 are shown as plain headed pins having transverse openings through their fore ends, and are retained and fastened in place by locking pins-16v inserted through said openings. These locking pins may con- 50 sist of simple pins of steel wire or the like,
having bent head endsl 17 and having their opposite `ends preferably ltapered as indicated at 18. The outside link bars at the side of the .chain adjacent to 'the locking pins, one of lwhich bars is more lclearly shown in Fig. 3, are provided with end notches 19 and with keeper openings 20 for engagement with the" ends 18 of the locking pins; said notches 19 and keeper openings 20 being at opposite sides of the pivot pin openings' 21. When the lockingfpins are inserted through the pivot pins,
the bent ends or heads 17 o the locking pins engage in the notches 19, and the' other ends of the locking pins are then bent into the keeper openings 20, as shown in Fig. 1, thus internon-rotatable relation to the outside links. The bushings 14, in which the pivot pins have a rotatable t, are themselves secured in nonrotatable relation to the inside link bars. For instance, the ends of the bushings'may be exteriorly deformed, as indicated at 22 in Fig. 6, and fitted in similarly shaped bushl nected, so that the chain links can move relatively toleach other only in accordance with ings, or in other words the relative angular movements of the links, as when Apassing varound sprocket wheels, must be in unison with the movements of the pins and bushings respectively connected to the link ends. This l is important to avoid wear of the link bars,
which are usually of comparatively soft metal as distinguished from the pivot pins and bushingswhich are ofhardened steel. The
locking of the pivot pins in non-rotatable con.-
neet-ion with the outside links through the locking pins, permits the employment of plain headed pivot pins, while the connection therewith to the outside links is exceedingly simple.
j locking the locking pins with the outside link bars and thereby holding the pivot pins in Vthe rotative movement of the pins in the bushyObviously the invention is not restricted V to the particular embodiment herein shown and described.
What claim as my invention, and desire to secure by-Letters Patent, is:v
l. A conveyor chain comprising pivotally connected link bars and embodying pivot pins, locking pins for said pivot pins, and bush# ings in which the pivot pins are rotatably fitted, said bushings being non-rotatably -mounted in ends of link bars connected by the pivot pins to ends of adjacent link bars, and said locking pins inserted through said pivot pins and fastened in such manner as to hold the pivot pins in non-rotatable relation to the l last memtioned link bars, so that the links can move relative to one another only in unison with the pins and bushings.
2. A conveyer chain comprising pivotally connected link bars and embodying pivot pins, locking pins for said pivot pins, and bushings in which lthe pivot pins are rotatably fitted,
said bushings being non-rotatably mounted in ends of link bars connected by the pivot pins to ends of adjacent link bars, and said locking pins being interlocked with the last mentioned link bars to hold the pivot pins in nonrotatable relation thereto, for the purpose described.
3. A conveyer chain comprising pivotally connected link bars, including link bars havin end notches and keeper openings, and emv bo ying pivot pins, locking pinsfor said pivot pins, and bushings in which the pivot pins are rotatably fitted, said bushings and pivot pins .connected -respectively with ad'acent ends of adjacent link bars, and said loc 'ng pins consisting of pins having bent head ends engaging said notches and their' opposite ends bent into and engaging said keeper openings.
4. A conveyer chain com rising alternating airs of outside and insi e link bars said insi e bars having bush openings and bushings non-rotatably mounted therein, said outside bars having pivot pin openings, headed pivot pins inserted through said outside bars and bushings, the outside bars-at the side of 4the chain opposite the heads of the pivot pins havingl end notches and keeper openings, and lookin ins inserted through the unheaded ends o t e pivot pins, said locking ins consisting of pinsfhaving bent head en in said notches and having their opposite en s bent into and engaging said keeper openings, whereby the pivot pins are held in nonrotatable relation to the outside bars.
In testimony whereof, I have signed my name to this specification. A
ALEXANDER T. BODLE.