US1184483A - Chair-iron. - Google Patents

Description

A. L. MORSELL.

CHAIR IRON. APPLICATION F|L ED SEPT. 28, 1912.

1,1 84,483. Patented May 23, 1916.

" I-1B COLUMBIA PLANOGRAPH c0., WASHIN TON, D. c.

ARTHUR L. MOB/SELL, 0F MILWAUKEE, WISCONSIN.

CHAIR-IRON.

Specification of Letters Patent.

Patented May 23, 1916.

Application filed September 28, 1912. Serial No. 722,877.

To all whom it may concern:

Be it known that I, ARTHUR L. MORSELL, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of lVisconsin, have invented new and useful Improvements in Chair-Irons, of which the following is a description, reference being had to the accompanying drawlugs, which are a part of this specification.

My invention has relation to improvements in chair irons, of the type known as adjustable chair irons, wherein provision is made for adjusting the vertical height of the chair iron spindle, and for locking the spindle in its adjusted position.

The invention particularly relates to certain improvements upon the form of chair iron covered by my United States Letters Patent No. 699,889, dated May 13, 1902. In. the chair iron covered by this patent a looking member is employed, which is carried by a revoluble member, and said locking member, under one adjustment thereof, is adapted to prevent rotation of the spindle in the revoluble member, and under another adjustment is adapted to unlock the revoluble member from the spindle and lock the same to the hub, one of said adjustments permitting the spindle to rotate Without raising or lowering the same, and the other of said adjustments permitting of the vertical adjustment of the spindle. In this construction the locking member is permanently pivotally connected to the revoluble member, thereby necessitating the employ- I ment of a separate pivot pin, and the work of permanently connecting the parts together.

It is the primary object of the present.

invention not only to dispense with the necessity of employing a separate pivot pin for the locking member, but furthermore to so construct the parts that the revoluble member and the locking member may be cast, thus greatly simplifying the mechani-- cal structure and also the expense of manufacture.

In the accompanying drawing, Figure 1 is a vertical sectional view of the improved chair iron, the revoluble portion of the iron being shown locked to the spindle to provide for rotating the spindle without changing the vertical height of said spindle; and Fig.

2 is a horizontal sectional view on the line p 2 2 of Fig. 1.

1 Referring to the drawing, the numeral 3 indicates the hub of the improved chair lI'OIl, which is provided with a plain or unthreaded bore 4, and with the usual leg attaching means. 7

The numeral 5 indicates the chair iron spindle, which is rigidly connected to and depends from the usual spider. This spindle is screw-threaded exteriorly and is provided with a longitudinal groove or recess 6. The spindle enters the smooth bore of the hub.

A revoluble member 7 is provided and this revoluble member surrounds the spindle and is interiorly threaded to engage the exterior threads of the spindle. This revoluble member may be of any desired form, preferably of ring form, and medially is provided with a surrounding shoulder 8 which seats itself upon the top of the hub.

A sleeve portion 9 extends downwardly from the shoulder of the revoluble member and enters the enlarged upper end 10 of the bore of the hub. This sleeve is provided with an annular recess 11 which receives a screw 12 turned through the hub, the said screw serving to permit rotation of the revoluble member, while yet preventing upwardwithdrawal thereof from within the hub.

At one point the revoluble member is provided with a slot 13, which slot extends from the upper end of said revoluble member downwardly to just below the shoulder 8. On one side of the slot the revoluble member is provided with an outward projection l4, and on the under side of this projection is formed a transverse recess 15 which leads to or communicates with the slot 13.

It will be evident from the foregoing de scription of the revoluble member that this entire member can be cast, and the only machine work which is necessary in connection therewith is the cutting of the interior threads thereof.

The locking member or dog consists of a locking head 16 which fits in the slot 13, a portion 17 extending at right angles to the head or dog and fitting in the recess 15 of projection 14, and a handle portion, one member 18 thereof extending at right angles to the member 17, and the other hand grasp ortion 19 thereof extending at right angles to the portion 18. It will be evident that this entire locking device, consisting of the three portions mentioned, can be cast in one piece.

In assembling the parts together, all that is necessary to be done is to adjust theportion 17 of the locking member to the groove or recess 15 on the under side of projection 14 of the revoluble member. The revoluble member is then seated upon the top of the hub with its sleeve portion extending into the bore of the hub. The screw 12 is then turned through the hub and into the recess 11 of the sleeve. The next step is to turn the spindle into and through the revoluble member and its sleeve. When the revoluble member is thus seated and held upon the top of the hub, it will be evident that the locking memberis securely held in place, the portion 17 thereof being confined in its recess 15, between the under side of the projection 14 and the top of the hub. It will also be evident that these parts, 2'. 6., the revoluble member and the locking member, are thus connected together without the necessity of employing any separate pivot pin, as is usual.

The top of the hub is provided with one or more stops, preferably in the form of recesses 20. Y

In the use of the device, when it is desired to lock the revoluble member to the spindle, so as to provide for the revoluble member and the spindle rotating together, without any change in the vertical adjustment of the spindle, the locking head of the locking member is turned inwardly so as to cause the edge 21 thereof to extend through the slot 13 of the revoluble member and engage the longitudinal groove 6 of thespindle. When, however, it is desired to change the vertical height of the spindle, so as to adjust the height of the chair seat, the locking head is turned outwardly so as to cause a shoulder 22, formed on the looking head, to rest on top of the hub. The spindle and revoluble member are now turned slightly together until the shoulder 22 comes over one of the recesses 20 of the hub. When this occurs the locking head by gravity will automatically drop into engagement with the recess and thus lock the revoluble member to the hub and permit independent turning of the spindle within the revoluble member so as to raise or lower said spindle in accordance with the direc- 7 tion of turning of the same.

It will furthermore be evident that the flipping of the locking head can be accomplished while a person is occupying the chairseat, simply by extending the hand beneath the seat and grasping the handle of the locking member. After this is done the dog or looking head will drop into one of the recesses 20 or into the longitudinal recess 6 of the spindle, as the case may be,

the moment the locking head is brought into register with either through the further turning of the chair seat, and while a person still occupies said seat.

WVhat I claim is:

1. A locking means for an adjustable chair iron having a hub portion and a spindle, comprising a revoluble member provided with a bore through which the said spindle is adapted to extend, locking means movably confined between the revoluble member and the hub and freely removable means, and permitting of the raising or lowering of the spindle, under the other 2LCl]LlSt-.

ment of the locking means; 7

2. A locking means for an ad ustable chair having a hub portion provided with engaging means, and a longitudinally grooved spindle, comprising revoluble member provided with a bore through which the said spindle is adapted to extend, locking means movably confined between the revoluble member and the huband freely removable from' its confined position, when the revoluble member is disconnected and raised from the hub, said locking means, under one adjustment thereof, adapted to engage the longitudinal groove of the spindle to thereby lock the revoluble member to the spindle, and underanother adjustment thereof to engage the engaging means of the hub, and thereby lockthe revoluble member to the hub, and means constructed to permit of the spindle rotating without raising or lowering the 1 same, under one of said adjustments of the locking means, and permitting of the raising or lowering ofthe spindle under the other adjustment of the locking means.

3. A locking means for an adjustable chair iron having a hub portion and a spindle, comprising a revoluble member provided with a bore through which the said spindle is adapted to extend, a locking means consisting of a locking head removably mounted in the revoluble member and having an intermediate transverse portion adapted to be turned by hand, said intermediate portion being confined between the revoluble member and the hub and having a free turning or rocking motion therebetween, and freely removable from its confined position, when the revoluble memberis disconnected and raised from the hub, said locking head, under one adjustment thereof, adapted to lock the revoluble member to the spindle,

and under antther adjustment thereof to lock the said revoluble member to the hub, and means permitting of the spindle rotating without raising or lowering the same, under one of said adjustments of the looking head, and permitting of the raising or lowering of the spindle on the other adjustment of the locking head.

el. A locking means for an adjustable chair iron having a hub portion provided with engaging means, and a longitudinally grooved spindle, comprising a revoluble member provided with a bore through which the spindle is adapted to extend, a locking means consisting of a locking member removably mounted in the revoluble member, and having an intermediate transverse portion adapted to be turned by hand, said intermediate portion being confined between the revoluble member and the hub and having a free turning or rocking motion there between, and freely removable from its con fined position, when the revoluble member is disconnected and raised from the hub, said locking means, under one adjustment thereof, to engage the groove of the spindle, and thereby lock the revoluble member to the spindle, and under another adjustment thereof, to engage the engaging means of the hub, and thereby lock the revoluble membet to the hub, and means constructed to permit of the spindle rotating without raising or lowering the same under one of said adjustments of the locking means, and the permitting of the raising and lowering of the spindle on the other adjustment of the locking means.

5. The combination of a hub provided with lock engaging means, a threaded spindle provided with a longitudinal groove, an interiorly threaded revoluble member on the hub and detachably connected to the hub, and through which the spindle passes and has threaded engagement therewith, said revoluble member provided with a slot extending a desired distance thereof, and looking means consisting of a locking head, an intermediate member and a handleportion, said locking member adapted to work through the slot of the revoluble member, and said intermediate member confined between the revoluble member and the hub, to permit of the free removal of the locking means when the revoluble member is disconnected and raised upwardly from the hub, the head of said locking means adapted to engage the longitudinal groove of the spindle and lock the revoluble member to the spindle under one adjustment of said locking means, and thereby prevent independent rotation of the spindle in said revoluble member, and under another adjustment of said locking means to disengage the locking head from the groove of the spindle and thereby unlock the revoluble member from the spindle and en-" gage the engaging means of the hub, to thereby lock the revoluble member to the hub, one of said adjustments permitting of the spindle rotating without raising or lowering the same, and the other of said adjustments permitting of the vertical adjustment of the spindle.

(3. The combination of a hub having a plain or unthreaded bore, a threaded spindle provided with a longitudinal groove, an interiorly threaded revoluble member 011 the hub and detachably connected thereto, and through which revoluble member the spindle passes and has threaded engagement there with, said revoluble member provided with a slot extending a desired distance thereof, and also provided with an outward projec tion on one side of the slot, the said outward projection provided on its under side with a groove, and a locking device engaging said groove, said locking device adapted to work through the slot of the revoluble member, and also adapted to be freely removed when the revoluble member is disconnected and raised upwardly from the hub, the head of said locking device adapted to engage the longitudinal groove of the spindle and lock the revoluble member to the spindle under one adjustment of said locking device, and thereby prevent inde pendent rotation of the spindle in said revoluble member, and under another adjustment of said locking device to disengage the locking head from the groove of the spindle and thereby unlock the revoluble member from the spindle and engage the engaging means of the hub, to thereby lock the revoluble member to the hub, one of said adjustments permitting of the spindle rotating without raising or lowering the same, and the other of said adjustments permitting of the vertical adjustments of the spindle.

7. The combination of a hub having a plain or unthreaded bore, a threaded spindle provided with a longitudinal groove, an interiorly threaded revoluble member on the hub and detachably connected thereto, and through which revoluble member the spindle passes and has threaded engagement therewith, said revoluble member provided with a slot extending a desired distance thereof, and also provided with an outward projection on one side of the slot, said outward projection provided on its under side with a groove, and locking means consisting of a locking head, an intermediate portion and a handle portion, said locking head adapted to work through the slot of the revoluble member, and said intermediate member confined in the groove on the under side of the outward projection and between said outward projection and the hub, to permit of the free removal of the locking means when the revoluble member is disconnected and raised upwardly from the hub, the head of said locking means adapted to engage the longitudinal groove of the spindle and lock the revoluble member to the spindle under one adjustment of said locking means, and thereby prevent independent rotation of the spindle in said revoluble member, and under another adjustment of said locking means to disengage the locking head from the groove of the spindle and thereby unlock the rev oluble member from the spindle and engage the engaging means of the hub, to thereby lock the revoluble member to the hub, one of said adjustments permitting of the spindle rotating without raising or lowering the same, and the other of said adjustments permitting of the vertical adjustment of the spindle.

8. A chair iron, comprising a hub portion having a vertically extending bore, a threaded spindle extending into the bore of the hub, a member threaded on the spin dle and revolubly mounted on the hub portion, and a locking means carried by the threaded member for locking the threaded member to the spindle under one adjustment and for locking said threaded member to the hub portion under another adjustment, said locking means being interposed between the threaded member and the hub portion and held in operative position by the engagement of said threaded member with said hub portion.

9. A locking means for an adjustable chair iron, having a hub portion and a grooved spindle, comprising a revoluble member provided with a bore through which the chair spindle is adapted to extend, said revoluble member provided with a socket and a locking dog engaging in said socket the said spindle is adapted to extend, said revoluble member provided with a socket and a locking dog engaging in said socket, whereby the dog is removably secured in said socket and pivotally connected to the revoluble member, said dog adapted to be moved to a position in verticalalinement with thebore of said revoluble member, to

lock said member to the spindle, and said dog adapted to be swung outward from its vertically alined position, to lock said memher to the hub.

In testimony whereof I afiiX my signa ture'in presenceof two witnesses.

ARTHUR L. MORSELL.

WVitnesses KATHARINE HOLT, CLARA V. MUEHHLBAoi-I.

popies of this patent may be obtained for five cents each, by addressing the Commissioner of Batman.

Washington, D. G.

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