US1263158A - Sheet-metal hand-wheel for chair adjustments, &c. - Google Patents

Description

2li; raras earn CHARLES J. TRAVERS, OF PORT WASHINGTON, WISCONSIN, ASSIGNOR TO GILSON MANUFACTURING C0., .A CORPORATION OF WISCONSIN.

LZOSAS.

Specification of Letters Patent.

ratenteunpr. ie, isis.

Application filed August 31, 1917. Serial N o. 189,073.

To all fr0/rom t may concern:

Be it known that I, CHARLES J. TRAVERS, a citizen of the United States, residing at Port Washington, county of Ozaukee, and State ot iVisc/onsin, have invented a new and useful Sheet-Metal Hand-Wheel for Chair Adjustments, Sac., of which the follo'e'ing is a specification.

This invention relates to improvements in hand-wheels and is primarily intended lor use in connection with one ofthe conventional forms or" adjustments ior revolving and tilting chairs, though, as will hereinafter appear, 'the wheel may be used in other relations where it is desirable to use a hand-wheel upon a threaded shaft.

lleretofore, it has been usual to construct hand-wheels for numerous purposes (chair adjustments included) from cast metal, the thread for cooperating with that of the shaft or standard being cut therein at considerable expense, so that not only is the weight oi" .the completed article augmented but also the cost as a result of the nishing necessary.

By my invention, I propose to reduce both the weight and the cost of manufacturing the hand-wheel, both of whichl accomplish by toriningthe hand-wheel of sheet-metal or' a gage to give it proper rigidity and shaping and stamping the aperture of the same, employed for the purpose of receiving' the threaded shaft or standard, to produce fragments oi `a thread designed to and capable of cooperating with the threads of the latter.

Referring to the drawings* Figure l illustrates in radial section a hand-wheel embodying my invention, the same being designed and adapted for use in connection with one of the many conventional forms ot chair-adjustments, the latter being shown, in this instance, in side elevation and broken away at its lower portion to conserve space; and Y Fig. 2 is a detail in plan of the improved hand-wheel.

Similar numerals of reference indicate similar parts in both figures of the drawing'.

Merely for the purpose of illustrating one of the applications of my hand-wheel, I have Y shown the same 1n connection with one wellknown type of chair-adjustment, wherein 1 designates the usual chair-legs or claws,

which are arranged about the usual metal hub, the upper flange 2, of which surniounts the upper sides of the legs or claws and are usually secured thereto by screws. On the upper side of the flange 2, one side ofits bore, is formed the short upwardly disposed lug 5, wherein is threaded a laterally disposed stop-screw 6. Within the bore ofl hub is located for vertical movement the usual adjustingstandard 4, at the upper end of which is carried the yoke (not shown) to which the stretcher and other component parts of the adjustment are attached. The standard 4, it will be understood, is longi tudinally threaded, and is encircled by what is generally termed the tl-washer;7 designated as 8, the same having an internal spline for engaging with the longitudinal groove of the standard. lThe upper side of the J- washer is provided with a plurality of shallow radial recesses 7, in its upper side, the same being designed to removably engage with corresponding ribs formed inthe underside of the hub of the hand-wheel. This is but the conventional form of one wellknown type of chair adjustment and its operation is readily understood by those conversant with chair construction.

In the present instance, and in accordance with' my invention, the hand-wheel 8, is formed of gage or thickness suihcient to give it rigidity, and it will be 'understood that it may have any external appearance or shape desired. In thepresent instance, the wheel is circular when viewed. in plan and is concavosconveX in radial section, a surrounding depending la-nge 8a, being eniployed so as to provide an'etiectual handhold or grasp. It will be apparent that this flange may be formed plain, as shown, or with protuberances after the fashion oi, the usual cast-metal wheel. At its center the wheel is provided with an aperture 9, of a diameter adapting it to receive and thereordinary'sheeteinetal oi suitable fore approximate the threaded adjusting edgeV of said thereof, so that when the Wheel is assembled upon the standard 4l, the said flanges, forining, as will be seen, fragments of a thread, will embrace the thread of the standard at the upper and lower sides of the latter as Well as lill the intermediate groove and thus cooperate with the standard in the saine manner as if the thread in the Wheel Were continuously formed in the usual manner. As the flanges 11 and 12 both embrace the thread and till the intermediate groove, the hand-Wheel is steadied in position. 1

ln order to reinforce the Wheel as Well as help steady the same upon the shaft or standard, l employ in connection with the wheel a smoothly bored cast-metal hub 13, though the same may be of sheetanetal if preferred. This hub is provided with an attaching-flange 1l, at its upper end which, by means of rivets 15, is secured to the underside of the liand-'\vlieel. lt is, furthermore, recessed on its underside, at 16, to receive the upper portion of the washer 3, and in the bottom of said recess, is provided with the shallow radial ribs 17, to removably engageivith the corresponding recesses 7 of the d-ivasher when the said Wheel is loire-red to its operative position upon the Washer. The exterior of the hub 13 is provided with an annular bead 18, and after the Wheel has been lowered to position upon the Washer, the stop-screw is rotated so that its inner enr. will engage the bead and thus prevent the hand-Wheel from being elevated a distance more than suilieient to permit of a temporary disengagement of the recesses and the ribs 17.

i hand-Wheel constructed in accordance with my invention vivill be much lighter than one Vconstructed of castanetal, as is customary, and moreover is' practically unbrealn able. The doing away with the necessity of cutting the thread in the standard receiving aperture greatly .reduces the labor of finishing, the semi-tangential flanges being readily stamped during the operation of forming the Wheel.

`Having described my invention, what l claim, is:

1. ifi hand- Wheel for chairadjustments and other purposes, the same being formed of sheet-metal and `having an aperture adapted to receive threaded standard, the aperture being disposed to form a rigid thread adapted to engage and cooperate' With the thread of the standard.

2. A hand-Wheel for chairadjustments and other purposes, the same being formed of sheet-metal and "having an aperture adapted vto receive a threaded standard, the edge of said aperture being disposed to form a rigid fragment of a thread adapted to en- Gopiee of this patent tney be obtained for standard, of a hand-Wheel 'each side thereof oppositely inclined to five cents'each, by addressing the Washington, D. C,

age and cooperate with that of the standrd.

3. A hand-Wheel for chair-adjustments and other purposes, the same being formed of sheet-metal and having an aperture adapted to receive a threaded standard, said aperture having at one side a rigid tangential inclined flange for engaging the thread of said shaft or standard.

fr. A hand-Wheel for chairadjustments and other purposes, the saine being of sheet -inetal and having an aperture adapted to receive a threaded standard, said aperture having its edge slit and those portions of the edge lying at opposite sides of the slit bent in opposite directions to form rigid semi-tangential inclined flanges embracing the upper and lower edges of the thread of the shaft or standard.

fr hand-Wheel for and other purposes, the same being formed of sheetmetal and having an aperture adapted to receive a threaded standard, the edge of said aperture being disposed to form a rigid fragment of a thread cooperating with that of the standard, and a bored hub secured to the hand-Wheel, and having a plain bore coaxial With the aperture of the hand-Wheel and approximating the diameter of the standard. Y

G. il hand-Wheel for chair-adjustment and other purposes, the same being formed of sheet-metal and having an aperture slit at one side and the metal thereof at opposite sides of the slit inclined in opposite directions to 'form upper andV lower rigid semi- 'tangential flanges adapted to coact with and embra e the thread of an adjusting standard at opposite sides thereof, and a hub extending from the face of the hand- Wheel and having a plain bore in line with the aperture in the hand-Wheel and approximating the diameter of the standard.

7. rll`he combination With a threaded formed of sheetmetal and provided With an aperture ap-V proximating the diameter of the standard and receiving the same, said aperture having one side a radial slit and the metal at form rigid tangential iianges embracing the upper and loi'ver sides of the thread of the standard and approximately agreeing in Width with the groove of said standard, and a bored iub secured to the hand-wheel upon the underside thereof, the bore of said hub approximating the diameter of the standard and adapted to move thereover.

CHARLES'J. TRAVERS. lVitnesses T. A. BonnNnR,

H. W. Bomans.

Commissioner 'ni' latens.

formedV chair adjustments

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