USRE2433E - Improved lap-joint - Google Patents
Improved lap-joint Download PDFInfo
- Publication number
- USRE2433E USRE2433E US RE2433 E USRE2433 E US RE2433E
- Authority
- US
- United States
- Prior art keywords
- rivets
- joint
- laps
- lap
- belt
- Prior art date
Links
- 239000004568 cement Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 230000001070 adhesive Effects 0.000 description 2
Images
Definitions
- This invention is designed to prevent the lrufliing or turning up of the outer ends of the laps, which is generally caused by the friction produced as the joint passes over pulleys, drums, &c., and also to prevent the cutting of the thin outer ends of the lap by the heads of the rivets, in case the cement loses its adhesive property or gives way, and the connection thereby formed solely by the rivets.
- a B represent the two ends of a belt or' two pieces of belting.
- the ends ot' these two parts are chamfered or skived and cemented and lapped in the usual way, so that the parts A B at their junction will be of the same thickness as at other parts.
- C represents rivets of the usual form, which pass through the chamfered ends, and serve, in addition to the cement, to secure the central portion of the joint.
- rivets are placed transversely in rows of three each but they may be placed nearer each other, if desired, and more rivets may be used.
- the 'plates or straps b in consequence of projecting over the ends of the laps, protect their ends, (the lap ends,) and prevent them from being turned up. They also, in case the cement gives away, or, from any other cause, loses its adhesive property, and the strength of the joint depends solely on the rivets, p revent the heads of the rivets from cutting through the laps.
- the plates or straps b in unity with the rivets, (whether made in one piece of metal or in three parts,) will prevent this as there are no heads allowed to come in contact with the belt at the outerrends of the laps, and the plates or straps also bind firmly the thick and thin portions of the laps together, so that the thin outer edges of the same cannot beturned l up or parted from the inner and thicker ends.
- a B does not render cement absolutely necessary inner ends, A B, of the belt, substantially as to make a strong, durable joint.
- the rivets and plate in union with each other, may be The union of the plate or strap b With the rivets a a', which pass through the outer and and for the purpose described.
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