US2201046A - Self-oiling swing hook - Google Patents

Description

y I F. McLAlN 2,201,046

SELF-OILING SWING HOOK Filed April 22, 1938 2 Sheets-Sheet 1 May 14, 1940. F. H. McLAIN 2,201,046

' SELF-OILING SWING HOO/K Filed April 22, 1938 2 Sheets-Sheet 2 I I I I I I I .9 I I I I l I I I I l I I I t Patented May 14, 1940 UNITED STATES PATENT OFFICE 1 Claim.

My invention relates to an improvement in self-oiling swing hooks.

The object is to provide a very simple construction for supporting porch or playground swings,

which is self-lubricating and easily accessible for replenishment of the lubricant at any time.

A further object is to provide a fixture, all parts of which may be easily and inexpensively constructed and assembled and any worn. part renewed without difiiculty.

A further object is to provide a construction of few, simple, durable and easily assembled elements.

In the accompanying drawings:

Fig. 1 is a view of the hook in side elevation with the supporting bracket shown in section;

Fig. 2 is a transverse section taken at rightangles to Fig. 1;

Fig. 3 is a top plan view of the bracket and hook in place therein;

Fig. 4 is a view in perspective of the hook;

Fig 5 is a view in elevation, partly in section, of a playground swing hook;

Fig. 6 is a vertical section on the line 6-43 of Fig. 5 looking to the left in the direction of the arrows; and

Fig. 7 is a horizontal section on line 'l--'l of Fig. 5.

A, represents the hook, preferably oval in shape,

with a rounde cam. l depending from the upper center and in the general plane of the rest on the hook. The numeral 2 is a hanger. This has a recess 3 at the bottom curved to fit, approximately, the lower edge of the cam, and sufiiciently deep to form an ample receptacle for oil or other lubricant, the idea being that this lubricant receptacle 3 is of sufiicient size and capacity to hold enough lubricant so that the lower end of the cam is always submerged therein, and will continue to remain well oiled, no matter how far the hook swings, or practically how long.

The lower end of the hook A is provided with an indirect opening 4 adapted to receive the link 5 of the swing chain and preclude any danger of the chain ever being jerked out of the hook.

The two members of which the fixture is composed, namely the hook A and the hanger 2, are first assembled, and then the hanger is fastened to the ceiling by screws, bolts or other devices 6, and the loop 5 of the swing chain is dropped into the open lower end of the hook, as shown in Figs. 1 and 2.

In Figs. 5, 6 and '7, an adaptation is illustrated for the use of the swing in playgrounds or else- 5 where out, in the open. This construction is only slightly different from that illustrated in Figs. 1,

2, 3 and 4, but as playground equipment is frequently subjected to more constant use, heavier weights, and more severe punishment, provision 10 is made for this by making the cam 'l of a more or less bulbous shape as shown in Fig. 6. While this may not be necessary, this is a precautionary measure merely.

This construction is provided with a clamp 8 15 to fasten. over a pipe or other support 9. This clamp may be of any approved form, in a single ring for instance as illustrated, or it might be made in clamping sections, a perfectly obvious alternative, with the ends bolted or otherwise se- 20 cured together.

In this form also a cover or hood I0 is provided as a protection for the moving parts below. This may be a separate element, or formed integral with the clamp B, as shown. in the draw- 25 ings.

Fastening devices ll of any approved form, such for instance as bolts as the drawings show, secure the hanger l2 within the cover and to the top thereof. 39

The hook and hanger, especially in the form shown in Figs. 1 to 4, may be die-stamped and hence manufactured very cheaply. The playground design, probably, will be cast of malleable iron. The larger size cam l of this type of swing 35 hook may be cast without any additional manufacturing cost, but it is very desirable that this cam be large on its lower surface to carry the load and withstand the strain and hard usage they are likely to get in playground equipment. 40

I claim:

A hook having an eye with an internal substantially disk-like cam connected to the rim. of the eye by a narrow neck, and a hanger provided with a lubricant receptacle to receive the cam and lubricant, whereby to form a self-lubricating bearing in which the hook is adapted to swing.

FREMONT H. MCLAIN.

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