US1806084A

US1806084A - Tread

Info

Publication number: US1806084A
Application number: US287749A
Authority: US
Inventors: Roe De Forest
Original assignee: COLSON Co
Current assignee: COLSON Co
Priority date: 1928-06-23
Filing date: 1928-06-23
Publication date: 1931-05-19
Anticipated expiration: 1948-05-19

Description

Patented May 19, 1931 UNrrED STATES PATE-Nr oFFlcE-j DE FOREST ROE, OF CLEVELAND, OHIO, ASSIGNOR IO THE CDLSON COMPANY, yOF

ELYRIA, OHl'O, A CORPORATION OF 1,

Application filed June 23,

My invention relates to treads and relatesk particularly to rubber treads adaptable for use as supporting feet for the legs of furniture such as those of chairs and the like.

It is commonly known that chairs of the common oflice and residence types resting upon legs are injurious to rugs or floors'upon which they rest and this is more particularly true in the case of legged oflice chairs of the ordinary types whose users are accustomed to incline them rearwardly during use.

An object of my invention, therefore, is to largely avoid the injurious effort of the ends of chair legs upon rugs, carpets and floors.

Another object of my invention is to provide-an improved supporting tread adaptable for use for tables, chairs, desks and the like which will make good frictional contact with the floor upon which the articles rest and which will effect quiet movement when the article is pushed along the floor and which will not be injurious to the surface upon F which it rests.

2 Another object of my invention is to pro- Vide as an article of manufacture an improved tread for the legs of chairs or the like which may be attached thereto readily and without difliculty by inexperienced people.

39 Another object of my invention is to provide an improved tread for chair legs or the like which may be readily attached by the use of a simple tool, such as a screw driver.

Other objects of my invention and the in vention itself will become more apparent from the following description and in which description reference will be had to the accompanying drawings forming a part of this specification.

Referring to the drawings:

Fig. 1 villustrates an embodiment of my invention attached to the end of a chair leg, the View being in longitudinal medial section;

Fig. 2 is an elevational view of the tread alone;

Fig. 3 is an elevational view of the tread of the foregoing figures shown attached to the lower end of a chair leg which is shown inclined to the position it would assume when softy rubber or'rubber composition material 1928. serial 1570.287349.

the user of the chair has tilted the chair, when in use, rearwardly; and

Fig. 4 is aperspective View of the tread alone.

Referring nowto all of the figures of draw- 53 ings in all of which like'parts willbe ydesignated by like reference characters7 1 illustrates the lower end of aI chair leg,2 illusi trates a rubber tread attached thereto,'and at 3 there is shown a metallic strip over which G9 the rubber body l of the tread is molded. Themetallic strip is of generally L-shaped form with an uplifted clamping portion 5 j adapted to be secured by a screw 6 tothe bottom surface of the leg. Depending portions C35 7 and 8 of the strip are disposed on the two sides of the clamping portion 5 and when the screw 6 is driven home the rubber portions) and 10, interposed between the 'strip depending portion andthe bottom surface of the leg, l@ are put under compression so as to make a tight joint all' around the border portion of the leg bottom surface. The upper' arm 11 of the reenforcing strip projects .from the rubber tread body, and terminates in an apertured tongue adapted to receive the screw 12 which projects laterally therethrough to clamp'it onra lateral'side of the leg.

The tread body 2- is preferably made of andfis preferably of angular formation comprising anapproximately plain body vsurface 13 and angularly disposed

plane surfaces

14 and 15 adapted for engagement with the plane bottom and'lateral surfaces of the leg. At the front 16 and rear 17 of the tread, the treadis rounded to prevent scruifing frictional contact with rugs, carpets or the like toV provide a more pleasing appearanceand parj ticularly at 17 to permit ready rolling when the chair is tilted.

Preferably the metal reenforcement will, when the screws 6 and 12, are driven home, compress not only the rubber portions 9 and y l 10 but also the rubber portion 18 interposed f between the arm 3 and adjacent lateral surface of the leg.

From the foregoing the manner of attachment and the use of the tread of my invention will be readily apparent. It is capable of use on many different types of furniture legs, and as has been described can be attached by the mere use of a screw driver.

Having thus described my invention in a certain embodiment, I am aware that departures may be made from the embodiment herein'illustrated and described, but without departing from the spirit of my invention.

I claim:

l. A tread for the bottom ends of furni-v ture legs, comprising a rubber body having two angularly disposed arms divergent integrally secured together and means to secure the two arms to the bottom surface and a lateral surface of a furniture leg, said means comprising a metallic strip imbedded in the body, said strip being of generally L-shaped form and comprising an arm substantially deeply embedded within each of the arms of the body, said arms being apertured to receivesecuringscrews passed therethrough,the apertured portions of the arms being inwardly deflected from intermediate portions and having inner surfaces disposed substantially in plane alignment with their associated inner furniture leg engaging arm faces.

2. A tread for the bottom ends of furniture legs, comprising a rubber body having two angularly disposed divergent arms integrally secured together and means to secure the two arms tothe bottom surface and a lateral surface of a furniture leg, said means comprising a metallic strip imbedded 1n the body, said strip being of generally L-shape-d form and comprising an arm substantially deeply imbedded within each of the arms of the body, said arms being apertured to receive securino' screws passed therethrough, the apertureol1 portions of the arms being inwardly deflected from intermediate portions and having inner surfaces 'disposed substantially in plane alignment with their associated inner furniture leg engaging arm faces, the apertured end of the arm adapted for engagement with the lateral surface of the leg, being projected through'and beyond y its associated rubber arm, the other rubber arm being provided with an aperture from its bottom tread face in alignment with the aperture in its associated metallic strip arm. In testimony whereof I hereuntoy aflix my signature this 21st day of May, 1928.

" DE FOREST ROE.