US222407A

US222407A - Improvement in fastenings for hatches of ships

Info

Publication number: US222407A
Authority: US
Publication date: 1879-12-09
Anticipated expiration: 1896-12-09

Description

A. JOHNSON. Fastening for Hatches of Ships. 1

No. 222,407. Patented Dec. 9, I879.

UNITED STATEHSPATENT OFFICE AMOS JOHNSON, OF BALTIMORE MARYLAND.

Specification forming part of Letters Patent No. 222,407, dated December 9, 1879; application filed IMPROVEMENT IN FASTEYNIN-GS FOR HATCH ES 0F SHIIPS.

October 29, 1879.

To all whom it mayconcem:

Be it known that I, AMOS JOHNSON, ofBal-,

timore city, State of Maryland, have invented certain new and useful Improvements in Fastenings for Hatches of Ships; and I hereby declare the same to be fully, clearly, and exactly 1 described as follows, reference being had to the accompanying drawings, in which--- Figure 1 is a sectional view of a part of a hatch, combing, and batten having my fastening device. wsleeve; Fig. 3, an end view of the latter.

Fig. 2 is a similar View of the It has heretofore been customary to secure the hatches of ships against the entrance of i rain or sea water by covering them with one or more thicknesses of tarpaulin, which lat- By the use of the device about to be described these evils are avoided. The hatches are more securely retained in place, are more 1 readily removed when desired, and the oombv ings, battens, and tarpaulins. are not disfigured.

In the accompanying drawings, A is the. fhatch; B,-the combing; 0, the batten, and D ,the deck. In the sides of the combing are inwsert'ed, at intervals of a foot or so all around, thimbles or sleeves f, which are malleable cast- 1 ings of about an inch in diameter by two inches in length. A deep thread, g, is'caston slot.

- them externally, and they are threaded internally for a portionsay one-half of their. length, as shown at It, the remaining portion,

h, being somewhat enlarged, as illustrated. In

the end is a deep transverse slot, c, for" a wrench, by means of which they are screwed into the coinbings.

E are ordinary bolts of a size to fit the sleeves internally, and are used with washers e; U y

In practice, the hatches being laidin place and calked all around, as shown at a, the tarpaulins a are laid upon them and foldedsnugly overthe combings B. The battensO being placed against the latter, the bolts E 'are screwed home, making all snug and secure;

j By preference, the castings are galvanized, and thebolts, before being inserted, are well greased, to prevent rusting; but, even should Y they rust, the contact-surface on the inside'of the sleeves is not sufticient to cause t-hem ito unscrew from the wood as the bolt lS'LIIP screwed...

If desired, the sleeves may be left-threaded,

therebeing no danger in that case of their be .ing unscrewed in the act of inserting awellgreased bolt; butin any case absolutesecurity is attained by driving a nail, l, (showninfdotted lines,

The device is simple and inexpensive, and thoroughly efficient and satisfactory in use.

What I claim is- The combination, with the combing and bat ten constructed substantially as describechof the sleeve f, having internal and external threads, and the bolt E, as andfor the'ypur pose setfor'th. V

' AMOS JOHNSON, -Witnesses: 3 R. D. WILLIAMS,

W. A. BERTRAM.

Fig. 3,)through one side of the