US734757A - Automatic hinged-leaf support. - Google Patents

Description

H0. 734,757. PATENTED JULY 28, 1903'.

FDA. SGHUEHLE 8: H. K. HORN. AUTOMATIG HINGED LEAF SUPPORT.

APPLICATION FILED SEPT. 15, 1902.

N0 MODEL.

2 SHEETS-SHBET l.

WWI wows B31221 Kfiorn Frederick LSchuehle PATENTED JULY 28,1903. F" A; SGHUEHLE 8; H. K. HORN. EUTOMAIIG HINGED LEAF SUPPORT urmommn FILED SEPT. 15, 1902. minimal;

2 SHEETSSHEET.

ckAscme-me I 514mm Herman KHorn Erederi STATES Patented July 28, 1903.

PAT NT Ormca.

. FREDERICK A. sc'nUEHLn AND HERMAN K. HORN,

OF INDIANABOLIS,

""E N IANA, Assjrenons To THE ,RIEL BROS. MNFG. 00., or IND-IAN- "1Tb i it '--;Be itm known: "that we, FREDJERICK A. ficnonnnn and HERMAN K. HORN, citizens of itheUnitedStates, residingat' Indianapolis, in

the county of Marion and State of Indiana, phave invented certain new provementsin Automatic Hinged-Leaf anduseful Im- Supports, .ofw'hich the followingis a rphThGObjQGh of ourinvention i'stoprov'ide a neat and efficient adj usting mechanism by means-of which a hinged leaf may be-adjusted withrelation z-to a stationary support and the construct the adjusting mechanism that it" e will becomposedof-a-minimumnumber of position of which may be -varied bya mere swinging of the hinged part Without the necessityiof manipulation of the several parts of thead-justing mechanism;

A further object of our invention is to so parts easily assembled and wlien'assembled be so connected that the parts cannot become misplaced! I 5 y A further object is to provide simple means by which the leaf may belocked in one position.

The accompanying drawings illustrate our invention.

Figure .1 is a side elevation. Fig. 2 is a perspective of the rack. Fig. 3 is a perspective of the link connected at one end to the swinging portion and engaging the rack at the other end, and Fig. 1 is a perspective showing the device attached and also showing thelocking means.

In the drawings figure 3 illustrates the rack portion of our device, said portion consisting of. a main casting having formed thereon ratchet-teeth 5, over which projects a guardarm 6, said guard-arm being cut in two at one point to provide an entrance-slot 7. Arranged adjacent ratchet-teeth 5 and parallel therewith is an arm 8, to which is pivoted a pawl g 9, the forward or free end of which rests adj acent the last incline of the ratchet-teeth 5.

(See dotted lines, liig. 1.) Pawl 9 is yieldingly held in normal position by a sm all spring 10, secured at one end in a slot 11, formed in bar 8, and in the otherend resting upon a finger 9, carried by the pawl 9. The rack just described is specification.

' I APQLIS,unnmNAQgA. CORPORATION on INDIANA.

AUTOMA IC HIINGED-LEALF SUPPOIRT.

Sr9 f-;A1i0l\rrormin part-of'l l letters Patent No. 734,757, dated July 28, 1903.

' Application filed a t-at 15,1902. semi No. 123,384. (No model.)

cured to a platform l3-such, for instance, as the bottom of-a go-cart, for which the mechanism is especially designed, although notverse pin 18. Formed at the outer end of pin 18, which is of alength slightly greater than the thickness of the ratchet teeth 5, is a' disk or head 19, and projectingfrom the'outer face of said disk or head is'a teat or lug 20. Arm

8 lies to one side of the plane of one face of arm 6 a distance slightly greater than the thickness of disk 19, but less than the distance between the inner face of said disk and'the outer end of the lug 20. In orderto assemble the parts, therefore, pin 18 of link 17 is passed provided at either end'with suitable bolt-eyes 12, by which it may be'sedown through the slot 7 and then moved to n '"the rear until the lug 20 reaches the slot 8, formed in the arm 8, whereuponthe endof' the link may be dropped down until its pin 18 comes into engagement with the teeth of the ratchet and lug 20 lies beneath bar 8. I11 this 4 position the forward end of link 17 is p ivotv ally connected at 16 to swinging leaf 15 and forms a strut to hold said leaf in adjusted position. Leaf 15 may be thrown up, and by such movement pin 18 is drawn forward over the teeth of the ratchet, and when it reaches the last incline, at about the time when the leaf is in its farthest upward position, lug 20 comes into engagement with pawl 9, beneath the same, and by displacing the pawl moves out from under the same,the pawlbeingimmediately returnedto normal position by spring =10 and thus forming a track over which lug 20 maybe drawn, the swingingleaf dropping freely about its pivot and forcing the free end of the link 17 to the rear until lug 20 reaches slot 8, when it drops again into engagement with the ratchet-teeth 5. Disk 19 is of such diameter that it prevents any lateral displacement of the free end of the link 17 even though the link be twisted.

In order to lock the hinged leaf securely in ing-finger remains in the its upper position, we journal a lock-shaft .21.

in suitable brackets 22 on the under side of the platform 13. Shaft 21 is provided at one end with a suitable Operating -arm and handle 23 and at the other end with a locking arm or finger 2.t, which may be thrown down into engagement with the pawl 9, so as to prevent suflicient movement thereof to allow pin 18 to be drawn over the ratchet-teeth 5 adjacent thereto. As a consequence displacement of the pin 18 in these teeth and consequent change of position of the hinged leaf may be prevented so long as the lockposition shown in dotted lines in Fig. 4.

\Ve claim as our invention--- 1. An adjusting mechanism consisting of aratchet-bar, a guard-bar extending thereover, a second guard-bar. arranged alongside'the ratchet-bars, out of the plane thereof, andhaving a slot at one end, a pawl arranged at the opposite end of said bar with its free end toward one end of the ratchet-bar; a link provided with a pin arranged to engage the ratchet-bar, a guard-bar. extending thereover.

andhaving a transverse slot, a second guardbar arranged alongside the ratchet bar, a

. pawl carried by the second bar with its free end toward one end of the ratchet, alink provided with a pin arranged to engage the ratchet, a guard carried by the pin and adapted to lie between theratchet-bar and first guard-bar on one side-and the second guard-bar on the other side, and a lug carried by the link and arranged to engage the second guard-bar and the pawl, substantially as and 1 for the purpose set forth.

3. An adjusting mechanism consisting of a ratchet-bar. a pawl arranged adjacent one end thereof, a link carrying a pin arranged to engage said ratchet and pawl, and means for preventing movement of the pawl whereby the link-pin may be held between-said pawl and the ratchet-bar.

t. An adjusting mechanism consisting of a ratchet-bar,aguard -bar extending therefrom, a second guard-bar arranged alongside the ratchet-bar and having a slot at one end, a

pawl arranged at the opposite end of said bar with its free end toward one end of the ratchetbar, a link provided with a pin arranged to engage the ratchet, a pin carried-by the link to engage the guard-bar and pawl, and a lockshaft provided with a locking-finger adapted to be thrown into engagement with the pawl to prevent its operation.

5. An adjusting mechanism consisting of a ratchet-bar, a guard-bar extending thereover and having a transverse slot, a second guardbar arranged alongside the ratchet-bar with its free end toward one end of the ratchet, a link provided with a pin arranged to engage the ratchet, a guard carried by the pin and adapted to lie between the ratchet-barand first guard-bar on' one side and the second guard-'bar on the other side, 'a lug carried by thel-ink and arranged to engagethe second guard-bar and the pawl, and a lock-shaft pro-

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