US911399A - Litter-carrier. - Google Patents

Description

A. Jansen.

LITTER GARRIER.-

APPLICATION mum an. 14, mos. 1,399, Patented Feb. 2, 1909. I 'a suns-slum. 1. P19. 1

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JENSON. LITTER CARRIER.

' ABPLIOATION .IILBD MAB. 14/1908.

Patented Feb. 2, 1909.

3 SHEETS-SHEET 2.

THE NORRIS PETERS cm, WASHINGTON, n. c.

A. JENSON. LITTER CARRIER. APPLICATION 11.11) w. 14, i908.

91 1,399, I 1 Patented Feb. 2, 1909.

3 SHEETS-SHEET 3.

UNITED STATES OFFICE.

AUGUST JENSON, OF KENYON, MINNESOTA, ASSIGNOR TO THE STANDARD CARRIER COMPANY, OF KENYON, MINNESOTA, A CORPORATION OF MINNESOTA.

LITTER-CARRIER.

Specification of Letters Patent.

Patented Feb. 2, 1909.

To all whom it may concern:

Be it known that I, AUGUST JENSON, a citizen of the United States, residing at Kenyon, in the county of Goodhue and State of Minnesota, have invented certain new and useful Improvements in Litter-Carriers; and I do hereby declare the following to be .a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates particularly to that class of carriers generally designated as litter carriers, although certain of the features of this invention arecapable of much more generaluse. The invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

Litter carriers and similar devices are, as is well known, provlded w th grooved wheels arranged to run upona track usually afforded by a wire cable or by a heavy single wire. Such cable or flexible track, under heavy load, will sag considerably and, when w the load is suddenly dumped by turning the bucket upside down, the recoil or upward spring in the cable has a tendency to cause the carrier to thrust upward and its grooved wheels to jump off from the track. T 0 prevent this I journal the grooved wheels in arms which, in turn, are pivotally connected to a relatively fixed part of thecarrier frame so that when the carrier frame, under acquired momentum, is thrown upward in respect to the track or cable, the grooved wheels may drop in respect to the carrier frame and maintain their engagement with thetrack or cable. This featureof the invention is capable of a wide range of application and will very greatly improve the construction and operation of sliding door hangers.

Another feature of my invention is directed to the improvement of the bucket latching and tripping mechanism of the carrier system.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views. Referring to the drawings,'Figure 1 is a view in side elevation, showing the several features of my invention incorporated in a litter carrier. Fig. 2 is a detail view in side elevation, and with some I parts to the said cable, Fig.3 is a transverse vertical section, taken on the line 00 w of Fig. 2. Fig. i is an end elevation, showing in detail the bucket and" its latch device. Fig. 5 is a detail in section on the line 06 of Fig. 1. Fig. 6 is a detail view in side elevation with some parts broken away, illustratmg a sh 'htly modified construction of the means for pivotally supporting the.

grooved truck wheels. Fig. 7 is a bottom plan view of the parts shown in Fig. 6; and

Fig.8 isa detail in side elevation, illus trating a simple way of yieldingly or pivotally'connecting the wheel-supporting arms to a sliding door.

Theoverhead track, which may be assumed to be in the form of a wire cable but which may be of any suitable construction, is indicated by the numeral 1. Adjustably mounted on this track cable is a tripping abutment, shown as in the form of a downwardly bowed cam bar 2 having U-shaped end portions or yokes 3 that loosely embrace the said cable. Pivoted to one end of the cam bar 2 is a lock lever 4: having an eccentric 5 adapted to be turned into clamping engagement with the cable 1 to lock the tripping abutment in any desired position on the said cable. In this preferred construction the carrier frame is made up chiefly of a strong yoke 6 bent from T-iron. Leg extensions 7 are applied to and depend from the down-turned legs of the yoke 6. These leg extensions 7 are preferably channeled at their upper portions so that they fit and are telescopically adjustable on the legs of said yoke 6 and they are adapted to be rigidly but adjustably secured thereto by means of'short nutted bolts 8 adapted to be passed through any of several perforations 9 formed in the outwardly extended flanges of the said yoke. The bucket 10 has trunl nions 11 and 12 secured to the ends thereof below its center of gravity; and these trunnions are j ournaled in the lower ends of the leg extensions 7.

Rigidly secured centrally to the transverse upper portion of the yoke 6 is a hanger bracket 13 having a laterally and downwardly turned upper end 13 through which and the upper side portion of said bracket a pivot bolt 14 is passed. lVheel-equipped arms 15 are pivoted on the bolt 14 and grooved truck wheels 16 are pivotally connected to the free ends of said arms. The arms 15 are preferably bifurcated and hooded, so as to embrace and cover the upper portions of the wheels 16.

Under the weight of the carrierframe and bucket, the parts will stand in the position shown in Fig. 1, in which position the upper portion of the hanger bracket 13 will engage the upper edges of the arms 15 and thus limit the downward movement of the carrier-frame in respect to the wheels 16 and the track cable 1.

l/Vhen the carrier frame, under momentum due to an upward thrust of the track cable after a load has been dumped from the bucket, is raised in respect to the track cable, the sort of a toggle formed by the arms 15 will buckle upward, substantially as shown in Fig. 2, and thus allow the grooved wheels 16 to maintain th ir engagement with the said track cable. The hanger bracket 13 is shown as provided with stop lugs 17 that limit the downward movements of the arifns 15.

Rigidly secured, as shown, to the bucket trunnion 12, is a notched latch segment 18 and a latch rim 19. The latch rim 19, so-

called, has a single lock notch 20 which is preferably located diametrically opposite to the notch of the latch segment 18, and the rest of the said rim 19 extends concentric to the axis of the trunnion 12. As shown, the said rim 19 is formed integral with a disklike body 21 that is rigidly secured directly to the said trunnion 12.

Mounted to slide vertically through keeper guides 22 on the right hand leg extension 7 is a latch bar 23. At its extreme lower end this latch bar is provided with a laterally offset lug 2% that is adapted to be engaged with the notch 20 of the latch rim l9; and further up it is provided with a laterally offset lug 25 that is adapted to be engaged with the notch of the latch segment 18. Just above the lock lug 20 the latch or look bar 23 is offset to clear the trunnion 12. The upper end of said bar 28 is connected, by a light rod or Still wire 26, to one end of a latch tripping lever 27 that is intermediately pivoted to a bearing 28 on the transverse portion of the fran'ie yoke 6. At its other end the tripping lever 27 is provided with a reversely beveled cam head 29 that is adapted to engage the downwardly bowed or reversely beveled tripping bar or abutment 2.

Normally, or when the bucket is in its upright position, said bucket is locked by enagement of the lock lugs 24 and '25 of the "00k bar 23, respectively with the notch 20 and with the notch in the segment 18; and, in this position of the lock bar, the cam head rails 35; and grooved wheels 29 of the tripping lever 27 is raised into such position that it will, at the proper point in the travel of the carrier, engage with and be depressed by the cam bar 2 of the tripping abutment. Vl hen the cam head is thus forced downward, the lock bar 23 will be raised into a position to release the carrier bucket and thus permit the said bucket to turn upside down and dump its load. The initial movement of the bucket from its up right or normal position causes the lug 2-lof the lock bar 23 to ride upon the flange or concentric portion of the rim 19; and this rim will then hold the said lock bar 2 3 raised and the head 29 of the tripping lever 27 lowered, until the bucket has been again turned into its upright or normal position. It therefm'e follows that with this device the tripping head 29 of the lever 27 will he held in a lowered position so that it will clear or pass under the cam bar 2 when the carrier is making its return movement; and this, as is evident, makes unnecessary a pivoted or yielding tripping abutment or arm on the track cable. l urthcrmore, the device described gives a double lock for the bucket, to-wit, one locking ei'igagcment between the lug 24 and notch 20, and another locking engagement between the lug 25 and the notch of the segment 18.

In the construction illustrated in he and 7, the hanger bracket 13 is provided with hood-like top extensions 3t; and the truck wheels 16 are pivotally connected, by pins 31, to the free ends of bit rcatcd arms 32, the inner ends of which arms are independently pivoted to the said bracket 15 by pins In Fig. 8 the numeral 3 t indicates a sliding door and the numeral 35 the usual rail for supporting the same. In applying my invention as a sliding door hanger, the door is shown as provided with hanger brackets 36 to which arms 37 are pivoted, above the 38 are journaled to the free ends of these arms 87. Normally, stop lugs 89 on the brackets 36 engage the intermediate portions of the arms 37 to limit the downward movement of the door. If, however, in pushing the door,one edge thereof be raised, the correspomiling wheel 38 will not be raised but will maintain engagement with the rail, since its arm 37 is free to move downward in respect to the raised bracket 36.

In the construction illustrated in Figs. 6 and 7, springs 40 are interposed between the lugs on the hood 30 and on the arms 32. These springs are normally compressed by the weight of the carrier, but when the carrier is raised in respectto the track, the said springs insure downward movements of the wheels; or, in other words, cause the wheels to maintain their engagement with the track cable.

s substantially as described.

The novel bucket locking and tripping mechanism above disclosed is not herein claimed but, is made the subject matter of a.

divisional application filed by me of date May 28rd, 1908, under Serial Number 434,573, entitled litter carriers.

What I claim is:

1. The combination with an elevated track, of a traveling body provided with truck wheels arranged to travel on said track, and which truck wheels are capable of downward movement in respect to said traveling body, so as to maintain engagement with the track when said traveling body is raised in respect to the track, substantially as described.

2. The combination with an elevated track, of a traveling body, and wheelequipped arms supporting said body from said track, which arms are capable of downward pivotal movements in respect to said body to permit the wheels to maintain engagement with said track when said body is moved upward in respect to said track, substantially as described.

3. The combination with an elevated track cable or wire, of a carrier having a pivoted bucket, a pair of arms pivoted to the upper portion of the carrier frame, truck wheels pivoted to the ends of said arms and running on said track cable, and which pivoted arms are capable of limited downward movements to permit the truck wheels to maintain engagement with said track cable,

l. The combination with an elevated track cable or wire, of a carrier having a pivoted bucket, a bracket constituting the upper portion of the carrier frame, a pair of reversely extended arms pivotally connected to said bracket and limited in their upward movement by said bracket, and grooved truck wheels pivoted to the free ends of said arms and arranged to run on said track cable, substantially as described.

5. The combination with an elevated track, of a traveling body provided with truck wheels arranged to run on said track, and which truck wheels are spring-pressed downward into engagement with said track, whereby the said wheels will maintain engagement with the track when said traveling body is raised in respect to the track, substantially as described.

6.. In an overhead conveyer, a bucket, a bail secured thereto, and trolleys supported by the bail and arranged for rocking movements to and from each other.

7 An overhead conveyer comprising a bucket, a bail pivotally connected therewith, a pair of arms pivotally connected with the bail, trolleys carried by the arms, and stops connected with the arms and having portions to engage with the bail to limit the rocking movements of the trolleys.

8. An overhead conveyer comprising a bucket, a bail pivotally connected therewith, a pair of arms pivotally connected with the bail, trolleys carried by the arms, and means for limiting the rocking movements of the arms.

In testimony whereof I atfix my signature in presence of two witnesses.

AUGUST J ENSON.

Witnesses:

H. D, KILcoRE, M. E. RoNEY.

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