US852459A - Door for conveyers. - Google Patents

Description

PATENTED MAY 7, 1907.

M. O. SGHWAB.

DOOR FOR GONVEYERS.

APPLICATION FILED MAY 23, 1905.

2 SHEETS-SHEET 1.

VINVENTOR 760% C. SM

WITNESSES 1 UNITED STATES PATENT OFFICE.

MARTIN C. SCHWAB, OF BALTIMORE, MARYLAND, ASSIGNOR TO GRAVITY CONVEYOR COMPANY, A CORPORATION OF NEW YORK.

DOOR FOR CONVEYERSQ Specification of Letters Patent.

ratented May 7, 1907.

To aZZ whom it may concern:

Be it known that I, MARTIN C. SCHWAB, a citizenof the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Doors for Conveyers, of which the following is a specification.

My invention relates to conveyers, particularly gravity conveyers, and has for one of its objects the provision of a door of simplified construction for an opening in a conveyer.

Afurther object of the invention is to provide a door for a conveyer opening which may accommodate goods at different heights from a floor level or from a truck.

Other objects will appear hereinafter, the novel combination of parts being set forth'in the claims.

In the drawings, Figure 1 represents a spiral gravity conveyer in elevation with certain portions broken away and with my invention applied thereto. Fig. 2 shows a modification.

1O designates the conveyer in general. In detail, 11 designates the outer casing and 13 the inner core or shell. Between the casing and core is interposed the spiral blade 12 which may be of any suitable material. To this blade is connected at its lower end the inclined platform 23. This platform joins the spiral surface with the floor 20 through the exit opening 21. The upper end 18 of the spiral blade 12 is shown level with the floor 40 but this arrangement may be varied as desired.

Above the spiral 12 and conforming thereto, I have shown a spiral-shaped opening 81 in the outer casing 1 1. This opening may be of any suitable dimensions, and one may be on each floor when the conveyer extends through a plurality of floors or landings. In this instance, I have shown the lower edge of the opening a short distance above the spiral surface, the edge of the spiral blade at this portion of the conveyer being shownby the dotted lines 20. I may, however, extend the opening 81 down to the spiral surface so that the opening may serve as an exit opening, the descending packages being thrown out by centrifugal force.

Arranged to fully cover the opening 81 and corresponding in shape thereto, I provide a door 22, the ends and 25 of which may be cylindrical in shape so that the door may be mounted to slide up and down on the vertical fixed rods 24 and 24, respectively. These rods are provided with lower limit stops 27 and 27 and upper limit stops 26 and 26. Knobs 23 and 23 are shown for lifting the door 22 and a hook 28 pivoted at 31 to the outer casing 11 is arranged to hold the door in its open position by the toe 29 engaging the pin 30 secured to the upper central portion of the said door.

If desired, the door may be arranged to swing open, in which case suitable fastening means may be provided to retain the door in closed position.

' In any case it is preferable that the door 22 be s irally shaped so that its edges 34 and 35 shallconform to the opening 81 and the spiral blade 12 of the conveyer. It is evident that with an opening 81 as shown, articles may be fed into the conveyer at different heights from the floor or landing 30 or from trucks loaded to various heights. Furthermore, if the opening is constructed as an exit opening goods may be taken from the conveyer at various elevations.

In Fig. 2 are shown certain modifications which will now be described. In general the parts are the same as in Fig. 1, but it will be seen that between the floor or landings 30 and the opening 81 shown in Fig. 1 is divided by the vertical strips 93 into three openings 84, 85 and 86. Between the floors or landings 40 and are shown openings with closing means of different design, a cas ing 87 being provided for reinforcing the outer sheet 1 1 adjacent these openings. The opening 82 is shown as a square opening, opening 81 as a horizontal parallelogram and 83 as a vertical parallelogram.

Any other suitable opening may be used and they may be placed at any desired height from the floor and on any side of the conveyer, but it is preferable to place them adjacent and above the spiral surface and also near each other.

In Fig. 2 I have shown the opening 82 provided with a swinging door 88, flat or conforming to'the shape of the outer shell 1 1 and hinged at 89 above the opening. The opening 81 has a door 90 hinged at 93 at one side of the opening. The opening 83 is shown provided with a door 91 adapted to slide in the vertical guide-Ways 92 and be retained in its upper position by the hook 28.

l have shown the opening 81 as an exit opening since its lower side meets the edge 20 of the spiral 12 and descending articles would be thrown out by centrifugal force. The opening 83 could also be made an exit opening in the same way if desired, but I have shown it as an intake opening, so also the opening 82, since its lower edge is above the spiral surface.

Having thus described my invention and. without limiting myself to the details of construction or arrangement of parts herein shown and described, but reserving the right to vary the same within the spirit and scope of my invention what I claim and desire to have protected by Letters Patent of the United States is 1. The combination of a landing, and a conveyer having openings therein to accommodate articles being placed in or taken from the conveyer at different heights from the landing.

2. The combination with a conveyer having openings in close proximity to each other to accommodate articles being placed in or takenfrom the conveyer at different heights, of means for supporting said conveyer, and doors for said openings.

' 3. The combination with an outer casing, of an inner core, a spiral blade interposed between said casing and core, said outer casing having a series of openings above said spiral blade, and in close proximity to each other and doorsfor said openings.

4. The combination with an outer casing, of an inner core, a spiral blade interposed between said casing and core, said outer casing having a series of openings in close proximity to each other and each conforming in shape to the spiral blade, and means for closing said openings.

5. The combination with a landing, of a conveyer having a series of openings therein to accommodate articles being placed in or taken from the conveyer at diiferent heights from the landing, and a door for closing all of said 0 enings.

6. he combination with an outer casing, of an inner core, a spiral blade interposed between said casing and core, a landing, said outer casing having a series of openings at or near the spiral blade and conforming in shape thereto, said openings permitting articles being placed on or taken from the spiral blade at different heights from the landing, and a single door for closing all of said openings.

7. The combination with a conveyer having an inclined opening therein, of a sliding door for said opening, upper and lower limit stops for the door, means for opening the door, and means for retaining the door in open position.

8. The combination with floor landings, of an outer casing and an inner core, a spiral blade interposed therebetween, a door for a spiral opening in the outer casing above a landing, rods on which-said door is 'slidably mounted, stops on said rods to limit the upward and downward movements of said door,

means for lifting the door, and means comprising a hook for retaining said door in open position.

9. The combination with an outer casing and an inner core, of a spiral blade interposed therebetween, a landing for the conveyer, a sliding door for a spiral-shaped opening above the landing and in the outer casing, rods on which the door is mounted, upper limit stops and lower limit stops for the door, means for opening the door, and fastening mechanism for holding the door in open position.

In testimony whereof, I have signed my name to this specification in the presence. of two subscribing witnesses.

' MARTIN C. SCHWAB. Witnesses:

CARL P. SCHROEDER, KENNETH LOOKETT.

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