US729571A - Tilting-chair iron. - Google Patents

Description

, PATENTED-JUNE 2, 1903 J. M. GERMANSON. TILTING CHAIR IRON. I Arrlfimnofi rILfip APB. 5.1902.

H0 MODEL.

UNITED ST TES Patented. June 2, 1903.

JULIUS M. GERMANSON, OF MILWAUKEE, WISCONSIN.

TILTING -CHAIR IRON.

SPECIFICATION-forming part of Letters Patent-No. 729,571, dated'J'une 2, 1903. Application filed ji tn 5.1902. Serial no. 101,539. (No model.)

To all whom it may concern.-

Be it known that I, J ULIUS M. GERMANSON, residing at Milwaukee, in the countyof Milwaukee and State of Wisconsin, have invented a new and useful Improvement in Tilting- Chair Irons, of which the following is a description, reference being had to theaccompan-ying drawings, which are a part of this specification.

My invention has relation to improvements in tilting-chair irons. v

In a common form of tilting-chair iron the head or socket piece ofthe'chair-iron spindle is provided withrupwardly-extending arms, and the spider-frameis'provided with depending arms extending alongside of -the head-piece arms, the said sets of arms being connected by a transverse shaft, on which the spider-frame is adapted to tilt. This'construction necessarily,.,involves considerable machine-work,inasmuch as holes are required to be drilled in the arms referred to for the passage of the shaft therethrough.

It is the primary object of my invention to provide a construction wherein all machineworkis avoided and all the parts can be cast and when taken from the sand are in condition to be adjusted together without the necessity of drilling holes or the employment of a separate shaft,thereby promoting simplicity and saving in expense in manufactureQand also simplifying the adjustment of the parts together or their separation when necessary,

With the above primary objectand other incidental objects in viewtheinvention contists of the devices and parts or their equivalents, as hereinafter set forth.

In the accompanying drawings, Figure l is a side elevation of my improved tilting-chair iron. Fig. 2 is a plan view thereof. Fig. 3

is a section on the line 3 3 of Fig. 1, and Fig. 4 is a fragmentary detail view illustrating the tiltingwasher.

Referring to ,the drawings, the numeral 5- indicates the spider-frame,which is provided with theusual arms 6, which extend in a horizontal plane and are secured at their ends to The numeral 8 indicates the head-piece, provided with the usual socket for the upper spaces are intersected by integral pivot-pins 12 12. The lower ends of the arms 7 are recessed and the furcate parts formed by these recesses straddle the pins 12, said pins there- ;by'forming pivots upon which the spiderframe can tilt. The upper endsiof the arms 9 extend into openings 13 13, formed at opposite ends ofthe transverse connectingpiece 14 of the spider-frame. One side bordering edge of each of these openings is pro-- vided with a horizontal. ledge or flange 15, and each flange is' provided at a medial point of its edge with a recess 16. At the upper end of each arm 9 is provided a laterally-extending lip 17, the upper end of each of said arms extending a sufiicient distance upwardly into the opening 13 to permit the lug to extend over the flange 15. The head-piece 8 is further provided intermediate of its ends with an upwardly-extending lug 18, said lug provided at its upper end with an opening 19, through which the threaded end of a rod 20 passes,if the threaded extremity thereof 'havin g'tur' ned thereon the interiorly-threaded tubular extension 21 from a hand-wheel 22. The opposite end of the rod 20 passes through a.,cross-ba'r 23 and isprovided with a head bearing againstthe outer side of the crossbar. The said cross-bar on its inner side and at opposite ends is provided with inwardlyextending lugs 24; 24, which project into the outer ends of coiled springs 25 25, the inner ends of said springs surrounding lugs 26 26 projecting from the transverse connectingpiece 14 of the spider-frame. hand-Wheel 22 the tension of the springs 25 maybe regulated, as is common in this class By turning the of devices. I prefer to employ in connection 'with this part of the device a rocking washer 27, which surrounds the rod 20 and is interposed between the end of the tubular extension 21 of the hand-wheel and the lug 18,

'the said lug 18, provided with projecting rounded ears 28, which bear against one side of the washer. By this construction when the spider is tilted a slight rocking play to the springs 25 is permitted, whereby the stress under which said springs are brought on account of said tilting operation is always maintained in line with the center of the rod 20.

From the foregoing description it will be seen that the spider-frame and the head-piece may be each formed from a single casting, and when taken from the sand they are ready to be fitted together without the necessity of drilling holes therein or of adjusting or securing additional parts thereto, such as a pivot-shaft. My improvements, therefore, not only greatly simplify the construction, but also reduce the expense of manufacture, and, furthermore, provide for the parts being shipped separately, and subsequently readily adjusted together when received by the person to whom shipped. The parts can also be readily detached or separated when necessary. Normally the lips 17 of the arms 9 extend over the solid portions of the flanges 15 or are out of register with the recesses 16, and in the tilting of the chair-seat and spiderframe connected thereto the said lips work over the said flanges, which flanges are preferably on a slight arc of a circle in order to permit free tilting movement. When it is desired to separate the parts, all that is necessary to be done is to bring the lips 17 and recesses 16 into registration, when of course the spider-frame can be readily lifted upwardly and separated from the head-piece. On the other hand, in putting the parts together the lips 17 and recesses 16 are brought into registration and the parts adjusted together, so that said lips will be brought above the flanges 15, and the sockets in the lower ends of the arms 7 will be engaged by the pivotpins 12.

.with a spider-frame having flanges at opposite sides, and each flange having a recess extending inwardly from the edge thereof, and said spider-frame also provided with depending arms, of a head-piece to which the depending arms of the spider-frame are removably pivoted, said head-piece provided with upwardly-extending arms having projecting lips adapted to extend over the horizontal flanges of the spider-frame.

In a chair-iron spider, the combination with a spider-frame having openings at opposite sides, and one side of the bordering edge of each opening provided with a projecting flange recessed at one point, and said spiderframe also provided with depending arms, of a head-piece to which the arms of the spiderframe are removably pivoted, said head-piece provided with upwardly-extending arms, the upper ends thereof extending into the openings, and provided with projecting lips extending over the flanges.

4. In a chair-iron spider, the combination with a spider-frame having flanges at opposite sides, each flange having a recess extending inwardly from the edge thereof, and said spider-frame also provided with depending arms, said arms having open-ended recesses at their lower ends, of a head-piece having pivot projections which the lower recessed ends of the depending arms of the spiderframe removably and pivotally engage, and said head-piece also provided with upwardlyextending arms, the upper ends thereof provided with projecting lips extending over the flanges.

5. In a chair-iron spider, the combination with a spider-frame having flanges at opposite sides, each flange having a recess extending inwardly from the edge thereof, and said spider-frame also provided with depending arms, said arms having open-ended recesses at their lower ends, of a head-piece having pivot-pins projecting laterally from opposite ends thereof, and which pins the lower recessed ends of the depending arms of the spiderframe removably and pivotally engage, and said head-piece also provided with upwardly-extending arms, the upper ends thereof provided with projecting lips extending over the flanges.

(5. In a chair-iron spider, the combination with a spider-frame provided with depending arms having recessed lower ends, of a headpiece having recesses at opposite ends, said recesses opening upwardly, and said recesses intersected by transverse pins, each pin receiving the recessed lower ends of the depending arms of the spider-frame.

7. In a chair-iron spider, the combination with a spider-frame having flanges at opposite sides, each flange having a recess extending inwardly from the edge thereof, and said spider-frame also provided with depending arms having their lower ends recessed, of a head-piece provided at its ends with upwardlyextending lugs, and near its ends with upwardly-extending arms, the spaces formed between the lugs and the arms being intersected by transverse pivot-pins which receive the lower recessed ends of the depending arms of the spider-frame, and the upwardlyextending arms of the head-piece provided at their upper ends with projecting lips which extend over the horizontal flanges.

8. In a chair-iron spider, the combination with a spider-frame having flanges at oppo site sides, each flange having a recess extending inwardly from the edge thereof, the said flanges 0f the spider-frame,. and said headspider-frame also; provided with depending piece and its parts being also cast integrally. IO

arms, the said spider-frame and its parts be- In testimony whereof I affix my signature ing integral, of a head-piece to which the dein presence of two Witnesses. pending arms of the spider-frame are remov- JULIUS M. GERMANSON. ably pivoted, the said head-piece provided Witnesses:

with upwardly-extending arms having pro- A. L. MORSELL,

jeeting lips extending over the horizontal ANNA V. FAUST.

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