US1293368A - Stay-bolt structure. - Google Patents

Description

E. l. DODDS.

STAY BOLT STRUCTURE.

LxcATloN HLED APR 2s A 918- Y 1,293,368 Patented Feb. 4, 1919.

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ETHAN I. nonns, or PITTSBURGH, PENNSYLVANIA, AssIGNoR To PLANNERY BOLT COMPANY, or PITTSBURGH, PENNSYLVANIA.

STAY-BUILT STRUCTURE.

Specification of Letters Patent.

Patented Feb. 4, 1919.

To all whom t may concern.-

Be it known that I, ETHAN I. Dones, a citizen of the United States, and a resident of Pittsburgh, `in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Stay-Bolt Structures; and I do hereby declare the following to be affull, clear, and eXact descriptionof the invention, such as will enable othersskilled in the art to .which it appertains to make and use the same.

This invention relates to improvements in stayb'olt structures and more particularly to the closure devices for the bearing Sleeve,-the object of the invention being to -provide a simple and efficient staybolt structure which will facilitate the quick removal of the cap or closure to expose the head of the bolt for testing purposes, and which will operate normally to hold the cap or closure tightly to its seat. j

With this and other objects in view, the invention consists Vin certain novel features of construction and combinations of parts as hereinafter set forth and pointed out in the claims. I

In the accompanying drawings, Figure 1 is a sectional View illustrating an embodiment of my invention; Fig. 2 is a side elevation;y Fig. 3 is a plan view, and Figs. 4, 5, 6, 7, 8 and 9 are views of modifications.

1 represents a bearing sleeve which may be threaded exteriorly to screw through a suitable hole in a boiler sheet and having an interior curved surface 2 which serves as a bearing for the rounded or spherical head 3 of a staybolt 4.

The bearing sleeve is provided at its outer end with a seat 5 for a cap or closure 6," the latter being in the present instance, made approximately hemispherical and having such internal dimensions and configuration as to provide proper clearance for the bolt head. The cap or closure is provided on its top with spaced lugs or ribs 7 for a pur pose hereinafter explained.Y

A collar 8 is threaded on the outer end of the bearing sleeve and provided with outwardly projecting lugs or ears 9 having perforations 10. A clamping cross bar 11, preferably of spring metal passes over and in engagement with the cap between the lugs or ribs 7, the latter preventing displacement of said cross bar. In Figs. 1 and 2 of the drawing, the cross bar is made curved and its end portions pass loosely through the perfor-ations 10. Y

It is apparent when the parts shall have been assembled as above explained, and the collar 8 is given a partial turn (said collar being made with a hexagonal or 4other eX- ternal configuration to receive a wrench), the cross bar 11 will be tightened on the cap or closure and the latter thus will be pressed firmly against its seat on the bearing sleeve. By turning the collar 8 in the reverse direction, the cap will be loosened and may be quickly removed to expose the head of the bolt and permit the testing of the latter. The cap may be as quickly replaced and clamped in position to tightly close the end of the bearing sleeve over the bolt.

In the form of the invention shown in Figs. 4 and 5, the cap or closure 6 is made ment 17 to receive an ear 18 on the cap. The

head or enlargement 17 is provided with transverse perforations to receive a pin or key 19 and the ear 18 is made with a perforation 20 appreciably greater in diameter than that of the pin or key and through which the latter passes to loosely connect the cap to the cross bar.

In the form of the invention shown in Figs. 8 .and 9, the cross bar 21 is made with arms 22 at its ends, said yarms having perforations 14 to receive the pins 15 on the collar 8. The cross bar 21 is provided between its ends with a perforation 23 to loosely receive a teat 24 projecting from the center of the cap 8, and said cap is provided with lateral arms 25 which project through suitable holes in the arms 22 of the cross bar 21.

Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is

1. Ina staybolt structure, the combination with a bearing sleeve, and a removable cap to seat thereon, of a collar threaded said A and a removable cap mounted on. said seat,

Aa collar threaded on said sleeve and having projections, a cross bar passing over said cap and engaging the projections on the collar, and means preventing relative lateral displacement of cap and cross bar.

3. In a sta-ybolt structure, the combination With -a hearingl sleeve having a cap seat, andy a cap to rest on said seat, said cap having spaced ribs on its top, of a collar threaded on the sleeve and havingv projections, and a cross bar extending over the oap and engaging the saine between the ribs thereon, the end sof said crossloar being loosely oo nnected with the rojections on said collar.

4. In a stayboli; structure, the combination with a bearing sleeve having a. cap seat and a cap to rest on said seat, of a collar threaded; onf said sleeve, outwardly projectingperfoi-ated ears on said sleeve, and a cross bar engaging said Cap and loosely engaging the perforated ears on Said sleeve.

In. testimony whereof, I' have signed" this specification in the presence of" tWosubscribing Witnesses. Y

ETHaN i@ Donne.4

Witnesses:

S. G. NOTTINGHAM, R. S. FERGUSON;

Copies of this,` patent may be obtained fol: five cents each, by addressing: the (lammisfsimer` ot Patents,

Washington, D. GJ

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