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Publication numberUS731635 A
Publication typeGrant
Publication dateJun 23, 1903
Filing dateFeb 9, 1903
Priority dateFeb 9, 1903
Publication numberUS 731635 A, US 731635A, US-A-731635, US731635 A, US731635A
InventorsJames E Vandegrift, Rolla P Vandegrift, Robert L Morris
Original AssigneeJames E Vandegrift, Rolla P Vandegrift, Robert L Morris
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 731635 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)


AfPLIOAI'ION FILED 1'38. 9, 1903.

no MODEL. w

w d b a mun/lull Z JAMES E. vANnEenIrrQnoLL/i P. vnnnnenmr, AND T i or SHELBYV-ILLE, INDIANA.

UNITED STATES Patented June 23, 1903.



"srnorrronrron ar i g part of Letters Patent No. 731,635, dateduun paieoa Application filed February 9, 1,903. $erial No. 142,496. (No model.)

To all whom it may Be it known that we, JAMES E. VANDEGRIFT, ROLLA P. VANDEGRIFT, and ROBERT L. Mon- RIs, each being a citizen of the United States of America, and residing at Shelbyvi1le,in the county of Shelby and State of ln diana, have inventedcertainnew and useful Improve ments in Shaft-Couplings; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains tomake andiuse the same, reference being had to the accompanying draw- 1 parts of the shells.

in gs, and to letters of reference marked thereon, which form a partof this specification.

Thislinvention relates to certain new and useful improvements in shaft-couplings and it consists in the construction and combination of the parts, as will be hereinafter set forth. 7

In the accompanying drawings, which illustrate our invention, Figure l isa side elevation showing the compression-shells of the coupling in position to be drawn toward each other .by a nut which engages the threaded Fig. 2 is a longitudinal sectional view. Fig. 3 is a side elevation of the sleeve. 4 is a vertical section taken through a point near thecenter of Fig. 2, and Fig. 5 is a perspective view'of one of the compression-shells.

A shaft-coupling made in accordance with the invention comprises anexpansible sleeve which exteriorlytapers toward each end, a pair of compression-shells having interlocking ends, a tapered interior, and exterior threads forengagement with a collar which when turned will draw the shells toward each other and compress the sleeve upon the shaft, meansfalso being provided for holding the shells sothat tongues thereon will enter re cesses to interlockthe shells. r

The coupling embodies in its construction an expansible and'compressible sleeve A, preferably made in a single piece, the ex terior tapering from its center toward each end, such sleeve having kerfs or slits (L a, which alternate and extend from one end to a point near the opposite end, such sleeve being adapted to be placed over and embrace the end portions of a shaft.

Shells B B interiorly taper to correspond 'with'the inclination of the exterior of the sleeve A, the shells being so constructed that when the ends are brought together the projecting tongues b b will enter recesses between the same. The tongues or recesses may be formed by cutting away or milling out a part of the end of each one of the "shells. Each shell has at a slight distance from the end of the recess a part B, 'of greater diameter than the greatest diameter of the body. portion, and such part has "external threads-one" shell having the threads cut right and the other left-the pitch of the threads being the same on both sections. The shells B B are each provided through the projecting portions B with apertures b I), positioned so that when such apertures are in alinement the tongues will be opposite the recesses, and such apertures are intended to receive a pin or bar which will hold the shells in proper alinement, so that the tongues will enter the recesses when the nut or collar 0 is turned to, draw the shells together.

The nut or collar 0 has internal right and left threads, and when the collar is .turned the shells will slide upon the pin until the tongues enter the recesses, after which the pin may be removed.

In case it is desired to dispense-with the tongues and recesses a pinorwpinsd may be used, as such pin or pins will prevent the sleeves turning independent one of the other.

In practice the parts of the coupling comprising the compressible sleeve A, shells B B, and the nut or collar C are placed upon a shaft, the shells being 011 opposite ends of the nut, and in order to position :and hold the shells in alinem ent a pin is passed through the apertures I), such pin preventing the turning of one shell independent of the otherand also admit of the shells sliding one toward the other, so that the tongue on one shell willenter the recess in the other shell. Aft-er such engagement takes place'the pin has served its function and may be removed.

The oppositely-threaded nut or collar when turned in the proper direction will draw the shells together to compress the sleeves on the shaft. It is obvious that the pin-receiving apertures 12 I) through the shells are desirable,

for without the same and a pin it would be a difficult matter to hold the shells in alinement prior to the interlocking of the tongues, and

without some means for holding the shells against turning one independent of the other the threads of the nut or collar would engage the threads on one shell prior to engagement with the other.

If desired, the ends of the sleeve may be formed with flat surfaces, and the nut or collar may be similarly shaped, so that the parts can be turned by a wrench.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. A shaft-coupling comprising a compressible sleeve, a pair of shells having on their adjacent ends tongues and recesses, there being pin-receiving apertures extending longitudinally through the shells and to one side of the tongues and recesses for the reception of a pin to hold the tongues of one shell in line with the recesses in the other shell, and a nut which engages the shells and draws them toward each other when turned, substantially as shown. 7

2. A shaft-coupling comprising a compressible sleeve, shells which overlie the sleeve and are provided with interlocking ends and externally with circumferential flanges having threads, the threads on one flange being pitched opposite the threads on the other H. K. MORRIS, WV. I. PATTERSON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2772100 *Jan 15, 1953Nov 27, 1956Erich Peter OskarPipe end connection and sealing system with centering means
US3083767 *Jun 23, 1958Apr 2, 1963Cicero C BrownSafety joint device
US3462175 *Apr 20, 1965Aug 19, 1969SonelConnector for unthreaded pipe,and method of making the same
US3653688 *Apr 22, 1970Apr 4, 1972Akira SakakibaraPipe coupling device
US4236736 *May 1, 1978Dec 2, 1980Turnbuckle Products CorporationHose coupling
US4846508 *Dec 16, 1987Jul 11, 1989Vetco Gray Inc.Tubular connector system
US5004367 *Dec 1, 1989Apr 2, 1991Trw Inc.Turnbuckle assembly
US5112332 *May 14, 1991May 12, 1992Zimmer, Inc.Method of performing spinal surgery
US5116334 *May 14, 1991May 26, 1992Zimmer, Inc.Posterior spinal system and method
US5147359 *May 14, 1991Sep 15, 1992Zimmer, Inc.Spinal hook body
US5154718 *May 14, 1992Oct 13, 1992Zimmer, Inc.Spinal coupler assembly
US5201734 *May 14, 1991Apr 13, 1993Zimmer, Inc.Spinal locking sleeve assembly
US5281222 *Jun 30, 1992Jan 25, 1994Zimmer, Inc.Spinal implant system
US5476462 *Aug 16, 1993Dec 19, 1995Zimmer, Inc.Spinal implant system
US6733045 *Apr 12, 2002May 11, 2004Harrington, Inc.Coupling assembly for fluid delivery
US6783528 *Jan 23, 2002Aug 31, 2004Stryker SpinePosition-adjustment system for an instrument for surgery of the spine
US7320556 *Jul 11, 2001Jan 22, 2008Dall Vagn-ErikGripping devices
US7322982Jun 14, 2004Jan 29, 2008Stryker SpinePosition-adjustment device with applicability for surgical instrumentation
US20020111627 *Jan 23, 2002Aug 15, 2002Philippe Vincent-PrestigiacomoPosition-adjustment system for an instrument for surgery of the spine
US20030193193 *Apr 12, 2002Oct 16, 2003Harrington David T.Coupling assembly for fluid delivery
US20040057789 *Jul 11, 2001Mar 25, 2004Dall Vagn-ErikGripping devices
US20040243127 *Jun 14, 2004Dec 2, 2004Stryker SpinePosition-adjustment device with applicability for surgical instrumentation
Cooperative ClassificationF16G11/12