US1693431A - Drive chain - Google Patents

Description

E. F. BEHNING DRIVE CHAIN Filed KJan. 10, 1927 sembled tached Patented Nov. 27, 1928.

UNITED srarss PATENT OFFICE.

EDWARD F. BEHNING, OF DETROIT, MICHIGAN, ASSIGNOR TO DIAMOND STATE FIBRE COMPANY, 0F BRIDGEPORT, PENNSYLVANIA, A

CORPORATION OF DELAWARE.

DRIVE CHAIN.

Application filed January 10, 1927,

This invention relates to drivechains, and more particularly to that type of chain Which comprises a plurality of flat toothed links asin a manner hereinafter clearly set forth. .y

One of the objects of the present invention is to provide a chain of this type which shall be light in Weight, strong, durable and silent and capable of withstanding corrosion to a much greater extent than chains as ordinarily manufactured.

The invention resides further novel details of clearly in certain construction as hereinafter set forthand as illustrated in the atdravvings, in which:

Figure 1 is a plan view of a section of chain made in accordance with my invention;

Fig. 2 is a. side elevation of the chain section shown in Fig. l;

Fig. 3 is a view in perspective of one of the links, and

Fig. t is a. section on the line 4`4, F 2.

In forming my chain, I prefer to form the links, which may be shaped as shown in Fi 3, of a non-metallic material which shall be unaffected in an adverse way by oil, water, acids and other elements that might come in contact with the chain under operating conditions. As a material that I have found particularly Well adapted for the purpose, I prefer to employ one of the laminated synthetic resin-bonded bodies, such as that known in the trade as Celoron, which bodies are commonly composed of a number of sheets of paper or fabric bonded together into a substantially homogeneous laminated body by means of a synthetic resin, such as bakelite, in its hard infusible and 'insoluble state. These bodies are particularly valuable for` the present purpose by reason of their imperviousness to Water, oil, acids and alkalies1 and vby reason further of their strength and toughness and noise-eliminating characteristics. These materials lend themselves further to use in my chain by reason of the fact that they may be manufactured in sheet form of thickness corresponding to the desired thickness of the individual links, the lat-ter being punched or otherwise formed from the sheets With a material saving in the manufac stance, I have shown at Serial No. 160.263.

turing cost. A further consideration which makes the use of vthis material of value .is its comparative lightness affording a material reduction in the Weight of the links and link units `Which results in reducing the stretch i.

and vrhip of the unmeshed portion of the chain to a minimum.

In assembling the chain, the links l are pivotally secured together, as clearly illustrated, by means of rivets 2, these rivets being each instance by a sleeve 3 to provide means for preventing relative rotation between the metal pin 2 and the sleeve 3, and this may be vdone in any one of a number of obvious Ways. In the present inone end of the rivet 2 a small longitudinal ridge or feather which enters a corresponding groove in the inside of the sleeve 3 and holds the parts relatively immovable.

Under certain operating conditions. such for example as in the crankcase of an automobile, there is apt to be present a certain percentage of sulfuric acid. This acid cor-` rodes and adversely affects the pins and links of chains of this general type as previously manufactured entirely of metal. Practically' all of this corrosive effect is eliminated in the present instance as previously set forth by reason of the protection of the major portion of the pin by the bushing 3. What slight corrosion may occur in the pin 2 cannot interfere materially with the normal operation of v the chain by reason of the fact that there is no frictional movementdirectly around the rivet 2, the links turning as previously described upon the bushing 3.

this arrangement of course, be considered modifioini of link herein described depaiture from the Aprising a lia i'dened synthetic 4resin7 n'ieiallie pins :for pivotzilly securing said links togehei',

and sleeves i nterposed between tlie pins and 10 full.'

the links and also composed of al non-in e.iiic

body compri sing a` hardened synthetic resin.

EDWARD F. EEHl-HNG.

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