US1560720A - Tray elevator - Google Patents

Description

Nov; 10-, 1925- s. oLsoN TRAY ELEVATOR 2 Sheets-Sheet l Fild Nov. 27, 1920 m mw Nov. 10, 1925- V 0 S. OLSON TRAY ELEYATQR Filed Nov. 27, 1920 ZSheets-Shect 2 herzr I M0290 was"? W 7 W v ha (75-42%;

' features of construction. 7

F igure 2 is an elevation of the same, be-

Patented Nov. 10, 1925.

UNITED -'sT T s;

SAMUEL otsomor cnrcaeo, ILLINOIS, AssmNoR r'o sAMUEno soN. & COMPANY, or:

CHICAGO, ILLINOIS, A CORPORATION,OFVILLINOIS.4 .1

raAY ELEVATOR.

Application filed November 27, 1920. SerialN'o'. 426,775.

To all whom it may concern:

Be it known that I, SAMUEL OLSON, a citizen of the United States, and. having residence at Chicago, in the county of Cook and the State of Illinois, haveinvented certain new and useful Improvements in Tray Elevators, of which thefollowing is a speci-' fication, reference being had to the accompanying drawings forming a part thereof.

This invention relates to an elevator of the typev shown and described in my Patent 1,325,857 issued December 23, 1919 and its purpose is to provide certain features of constructionfor an elevator of that type which shall be eflicient in operation andordinarily less expensive to manufacture than the corresponding elements of the patented structure. The novel features are herein after described and shown in the drawings and are particularly indicated by the claims.

In the drawings V Figure 1 is a sectional plan view of an elevator of the type to which this invention relates and illustrates one of the novel ing taken partly in section.

Referring first to Figures 1 and 2, it will be noted that this type of elevator consists of two pairs of chains, 1, mounted for vertical travel about suitable head wheels, ,2, and foot wheels, 3, which are preferably toothed wheels for positive engagement with the chain links; and that said chains are arranged in pairs, the two chains of each pair being connected by flights in the form of angle-shaped members" whose vertical arms, 4, are attachedto the links of the two chains while their horizontal arms extend toward the opposite pair of chains and in horizontal registration with similar flights" for supporting loads such as trays of the type commonly used in restaurants and cafeterias for carrying dishes. Thus each pair of chains, 1, with its attached flights, constitutes a belt mounted for vertical travel and for steadying these belts particularly at their load supporting flights, Figure 1 shows the vertical arms of the angular flights extending beyond the horizontal arms to form guide following lugs, 6, which engage between vertically extending guides laterally adjacent the belts.

In the particularly arrangement shown in Figure 1, a horizontally traveling belt,

7, passes between the vertically moving flights of the elevator for receiving trays therefrom as the flights descend past the plane of the belt, 7. The guideways for a the lugs, 6, are shown as composed ofangle 'rails, 8, at what may be termed the rearside ofthe elevator and angle rails, 9, at the front side, the latter being nested so "as not to project unduly toward the belt, 7,. l

and into'the path-of trays as they are discharged from the elevator by said belt, 7. In my said Patent 1,325,857 the guide lugs on the'flights are shown as offset awayfrom the path of these trays at the front side of the elevator; but in the present construction a similar result is obtained by fitting the vertical arms, 4:, of the flights with spacing blocks, 10, whose exposed faces are thus offset from the lugs, 6, which extend'st'raight in the planeof the arms, 4. In this way the trays as they are' moved off the horizontal arms, 5yonto' the belt, 7,;are spaced away from the lugs, 6, far enough to clear the overlapping parts of angle rails, 9, which engage the inner faces of the lugs, 6.

As indicated in Figure 2, each belt may.

present a practically continuous vertical wall if plates, 11, be attachedto the chains, I 1',.to extend between the vertical arms, 4,

of the flights. Each flight and each plate is attached only to one link of each chain to permit unhampered travel of these around thewheels, 2 and 3'.

I claim: 7 I 1. An elevator comprising a pair of-vertically traveling belts running parallel to,

each other and each includingtransversely:

disposed members with extendingend p'ortions extending in the plane of said .mem-

vb'ers, vertical guideways engaging said end portions to steady the belts in their travel,- partson each belt projecting laterally from said plane of the transverse members toward the other belt and in horizontal reg-- istration with each other for supporting loads, and spacing blocks secured to the faces of the belts adjacents said horizontal projecting parts for the purpose indicated. 2. An elevator comprising two pairs of vertical traveling chains running parallel to each other, each pair being transversely connected by angle rails disposed at intervals in parts I Q registration with similar rails on the opposite pair, said rails being secured to the chains, each with one arm extending verhorizontal arms, vertical guides overlapping 5 the inner faces of said end portions and spacing blocks secured to the opposing faces of said vertical arms to limit the loadrecei'vin g space between them so that it does not exceed the distance between the overlapping guides. I

In testimony whereof, 'I have hereunto set my hand at Chicago, Illinois, this 17th day of November, 1920.

, SAMUEL OLSON.

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