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Publication numberUS2426451 A
Publication typeGrant
Publication dateAug 26, 1947
Filing dateJun 21, 1946
Priority dateJun 21, 1946
Publication numberUS 2426451 A, US 2426451A, US-A-2426451, US2426451 A, US2426451A
InventorsKenneth D Hammack
Original AssigneeKenneth D Hammack
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Invalid's chair with brake
US 2426451 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

g- 1947. K. D. HAMMAcK 2,426,451

INVALIDS CHAIR WITH BRAKE Filed June 21, 1946 Q Quill/ l w" ....m/HHHI! INVENTOR. KENNETH o. HAMMAC'K,

Patented Aug. 26, 1947 UNITED STATES PATENT OFFICE 2 Claims.

The present invention relates to invalids chairs tachment for rolling chairs whereby they can be held in a stationary position while a crippled person gets in or out.

The primary object of the invention is to provide a device of the character referred to which will enable a crippled person to get in and out of it readily without assistance.

Another object of the invention is to provide a simple and inexpensive device of the character referred to, wherein the novel features can be installed in an ordinary rolling chair with slight changes.

A further object of the invention is to provide a rolling chair of the character referred to of simpler and more compact construction than prior devices.

With the foregoing and other objects and advantages in view the invention consists of the novel construction and arrangement of parts hereinafter described and claimed.

In the accompanying drawings illustrating the preferred embodiment of the invention,

Figure 1 is a side elevation of a rolling chair equipped with the helping means hereinbefore mentioned,

Figure 2 is a side elevation of the attachment with parts in section to show how they are assembled,

Figure 3 is a top plan view thereof.

Like numerals, as used in the description and drawings, designate the same structural parts.

This device to aid invalids, especially cripples, in the use of a rolling chair Ill of conventional type, without assistance, is designed primarily for attachment to the arm rest II and enables one to hold the chair in a stationary position when getting in or out. It may be attached to either arm rest as desired,

The attachment consists of an elongated spring metal strip I2, the inner end of which is secured to the underside of the arm rest longitudinally by two removable bolts I3 positioned adjacent such end thus allowing the front of the strip to be depressed.

Mounted on the outer end of the spring metal strip is a wooden block I4 with its inner end beveled, as at I5, to fit an inwardly beveled edge on the front end of the arm rest. This block is wider than the metal strip and fashioned to be a continuation of the arm rest, which is shortened so that the forward end of said block will not extend beyond the end of the other arm rest.

On the underside of the spring metal strip and below the block I4 i a brake shoe consisting of a metal plate I6, substantially as wide as the metal strip I2, and a depending, arcuate layer I! of rubber or other suitable material for a brake shoe. This brake shoe is positioned contiguous to the rubber tire of the chair wheel I8.

I Passing downwardly through the block I4 and threaded into registering screw holes in the spring metal strip I2 and plate I6 of the brake shoe, are two screw bolts I8, positioned longitudinally of the block to fasten the said parts together.

The foregoing construction produces a sectional arm rest normally like the other one in general appearance and can be so constructed at the factory.

When the user desires to get in or out all that is required to hold the chair in a stationary position while he does so is to press the block I4 down, thus putting the brake shoe on the wheel firmly. This will prevent the chair from rolling and causing an invalid or cripple to lose balance and probably fall. When the hand is removed, the spring metal strip I2 will return the block I4 to normal position as a part of the arm rest.

As different embodiments may be made of this inventive concept and modifications may be made in the embodiment hereinbefore shown and described, it will be understood that the matter herein is to be interpreted as illustrative merely, and not in a limiting sense.

What I claim is:

1. An invalids chair provided with front and rear traction wheels and arm rest contiguous to the front wheels, a strip of spring metal secured adjacent its inner end to the underside of an arm rest, a brake shoe attached to the underside of said strip of spring metal contiguous to a front wheel of the chair and a block attached to the upper side of said strip adjacent the forward end thereof, said block fashioned'as a continuation of the arm rest and positioned to adjoin the forward end of the arm rest.

2. An invalids chair provided with front and rear traction wheels and arm rests contiguous to the front wheels, a strip of spring metal secured adjacent its inner end to the underside of an arm rest, a brake shoe attached to the underside of said strip of spring metal to impinge the adjacent front wheel, a wooden block fashioned as a continuation of the arm rest and attached to the upper side of said spring metal strip contiguous to the front end of said arm rest, the abutting edges of the arm rest and block being beveled to form a miter joint and permit the block to be depressed.

KENNETH D. HAMMACK.

Non-Patent Citations
Reference
1 *None
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2855979 *Mar 22, 1957Oct 14, 1958William R HubbardCombined invalid wheel chair and walker
US3224524 *Sep 19, 1963Dec 21, 1965Laher Frank JScooter type vehicle with combination fender and brake therefor
US3302757 *Mar 18, 1965Feb 7, 1967Aid Inc Of PennsylvaniaAutomatic immobilizing device
US4204588 *Oct 16, 1978May 27, 1980Kawecki Henry EWheelchair braking apparatus
US4350227 *Aug 25, 1980Sep 21, 1982Bohn & DawsonWheelchair brake assembly
US4462605 *Jun 28, 1983Jul 31, 1984Georgia Tech Research InstituteWheelchair having anti-rollback mechanism
US5492355 *Jan 24, 1994Feb 20, 1996Berry; Theodore M.Wheelchair brake
US6739610Apr 8, 2002May 25, 2004Air Movement Technologies, Inc.Wheelchair brake apparatus and wheelchair including same
US7434824Sep 3, 2003Oct 14, 2008Air Movement Technologies, Inc.Automatic wheelchair brake system and wheelchair including same
US8622409Mar 3, 2010Jan 7, 2014Melvin G. Hector, JR.Structure, components and method for constructing and operating an automatically self locking manually propelled vehicle such as a wheel chair
US20130257010 *Aug 29, 2012Oct 3, 2013Melvin G. Hector, JR.Automatic Braking Device and Method
Classifications
U.S. Classification188/2.00F, 188/2.00R, 297/DIG.400
International ClassificationB62B5/04
Cooperative ClassificationB62B5/0485, A61G5/1018, A61G5/1035, A61G5/101, Y10S297/04
European ClassificationA61G5/10B5C, A61G5/10B