US2182587A - Nonsqueak hammock and swing hanger - Google Patents

Description

Dec. 5, 1939. s. HUDSON NONSQUEAK HAMMOCK AND SWING HANGER Filed Sept. 27, 1937 AMA-5E5 5 Patented Dec. 5, 1939 UNlTED STATES PATENT orrics NONSQUEAK HAMMOCK AND SWING HAN GER 1 Claim.

My invention pertains to wall hooks and particularly to that class of hooks which are employed in the hanging of hammocks and swings.

Hammocks and swings are usually subjected to heavy loads and their constant oscillation grinds together the constantly contacting metal surfaces of the hooks by which they are supported; for this reason it is only a matter of a short time before a nerve-torturing screech develops, which 1 greatly lessens, if it does not wholly destroy, the pleasurable and soothing sensations produced by the gentle to and fro motion of the hammock or swing.

The principal object of my invention is the production of a hook for hanging hammocks and swintgs which is nonsqueaking and silently efiicien Of course my hook is useful and appropriate wherever any other style of hook can be used; but it is especially adapted for use in those places where an object supported by the hook has a swinging or oscillating motion which, sooner or later, causes an annoying squeak.

To illustrate the best method of practicing the invention now known to me, I have filed a sheet of drawings as a part of this specification, in which the reference numbers wherever used in the several figures denote the same elements.

Figure 1 is an elevational view of my non- 3 squeak hook, parts being in sectlon to better illustrate the construction;

Fig. 2 is a side elevation, the view being taken looking at the right hand side of Fig. l, a part being in section to show the cross section of the pintle;

Fig. 3 is a view from below, looking upward,

the arms of the yoke being shown in section;

Fig. 4 is a side elevation, the view being taken looking at the left hand side of Fig. 1, a part of 4 the hook being broken away and the pintle anchoring pin being in section on a line just under its head.

As illustrated in the drawing, my invention is attached to a wall, a ceiling or other similar plane surface by screws which pass through holes provided for that purpose in a suitable plate 2; plate 2 may be produced by casting, by forging or by any other suitable method which will assure suitable rigidity and strength; formed integrally with 50 plate 2 is a projecting boss 3 which is bored with a bit of the proper diameter to form a barrel to properly house a pintle 4.

When the hook is to be attached to other than a plane surface like a round pole, column, tree limb or the like it will be better to substitute for the plate 2 a cylindrical part attached to the boss 3 to carry wood-screw threads which may be screwed into the uneven surface.

Pintle 4 is of a diameter to snugly fit the bore in boss 3 and it is long enough to project beyond the bore in boss 3 sufficiently to pass through the arms of a yoke 5.

Yoke 5 is U-shape in form. Both arms of the U-shape yoke are supported by pintlefl which passes through holes provided for that purpose in the arms of the yoke 5 and the barrel bored in boss 3.

Pintle 4 is provided with a head at one end similar in shape tothe head of a carriage-bolt; at its other end it is squared with a square 8 the diagonal of which is the diameter of the pintle in its cylindrical part and the length of the squared portion is just as long as the thickness of the arm of yoke 5 in which it is seated.

Yoke 5 is just the right size to straddle the boss 3. One arm of yoke 5 is bored with the same size bit used to bore boss 3 so that pintle 4 just snugly fits it; the other arm of yoke 5 is provided with a square hole 1 to accommodate the squared end 8 of pintle 4. The squared end of pintle 4 is bored centrally and screw-threaded to receive a screw-threaded anchor pin ll. Anchor pin H is provided with a large fiat head similar to the head on the pintle 4; however I usually cut a kerf in it so it can be manipulated conveniently with a screw driver. Of course it is not essential that the head of the anchor pin II have a kerf in, it because it might be made polygonal for manipulation by a wrench.

The side arms of yoke 5 are connected by a cross bar l4 and to this cross bar M is attached, approximately at its middle, a hook l3. Hook I3 may be formed in any desired manner; it may be forged integrally with the cross bar M or it may be welded thereto or it may be connected by screw threads or it may be loosely swiveled to bar I4.

The wall of the barrel made by boring boss 3 is tapped for the attachment of a grease-cup l5, preferably on the side diametrically opposite to plate 2 and the steam of the plunger of the greasecup is connected thereto by screw threads, riveting or any other desired and suitable manner. The grease-cup is of the usual kind, purchasable in the open market and is composed of an exteriorly screw threaded plunger on a plunger stem and an interiorly threaded cup to engage the threads on the plunger. The plunger and the plunger stem have a continuous hole through them. When the cup is partially filled with hard grease and its interior threads are engaged with the exterior threads of the plunger continued turning of the cup will cause the grease to be extruded through the hole in the plunger and the plunger stem for the lubrication of any part to which it may be applied.

My invention is not limited to a pintle having a squared end. It is broad enough to include a pintle having any irregularly shaped end which, placed in a correspondingly shaped hole in an arm of the yoke, will cause the yoke and the pintle to oscillate as a unit. However, I prefer a square ended pintle, because it is easier to make than any other shape which has more than four sides and, by shifting the wearing surface from quadrant to quadrant of the pintle surface, the hook device will last much longer than anyone is liable to care to use it. It will be obvious that when the yoke and the pintle are locked together and caused to oscillate as a unit the direct pressure will be distributed throughout the entire length of the pintle, consequently the wear on the pintle will be much less noticeable than when the yoke is permitted to swing on the pintle. In fact experience has shown that if the pintle is kept well greased as intended the wear upon the used quadrant of the pintle is so slight that it amounts to no more than polishing the surface.

To use my invention, plate 2 is fastened to a wall, ceiling or other suitable surface by strong wood-screws passing through the holes in the plate provided for that purpose; such holes are located that, whether the plate is placed longitudinally or transversely of a stuclding or a joist, two screws will enter the timber. After the plate is securely fastened, the arms of the yoke 5 are placed upon the sides of boss 3 in such a position that the holes through the arms are in regisration with the hole or barrel through the boss. Pintle 4 is then inserted through the yoke arm having the round hole, through the barrel in boss 3 and its squared end is seated in the square hole in the other yoke arm with the selected quadrant of the pintle downward and then locked in that position by anchoring pin I I. Grease-cup [5, after being partially filled with a good quality lubricant, is engaged with the plunger and screwed down until the desired quantity of grease is extruded against the pintle.

When constructed as described and arranged as explained my non-squeak hammock hanger will give many years of noiseless service.

Having fully described the manner of constructing my invention and explaining the manner of using, I desire to secure Letters Patent of the United States to protect me in the exclusive use of the following claim.

A barrel-like element having a perforation through its wall, means for attaching the element to a support, a force-feed lubricating device to deliver lubricant through the perforation, in combination with a U-shaped yoke for straddling the barrel-like element, one arm of the yoke having a circular perforation therethrough, the other arm of the yoke having a non-circular perforation therethrough, a cylindrical pintle to pass through the circular perforation in the arm of the yoke, the pintle having a non-cylindrical end to fit the non-circular perforation in the other arm of the yoke whereby the yoke and the pintle are locked together to oscillate as a unit and the pintle may be shifted to other positions to present new wear.- ing surfaces.

SAMUEL L. HUDSON.

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