US525583A - Receiving-box for pneumatic dispatch-tubes - Google Patents

Description

(No Model.)

L. G. BOSTEDO & E. A. PORDYCIL' RECEIVING BCX FOR PNEUMATIC DISPATCH TUBES.

No. 525,583. Patented Sept. 4, 1894 TH: mums r-crzns c0. MTO-LITNQ" WASNINGTON, o. c.

UNITED STATES PATENT ()FFIGE.

LOUIS G. BOSTEDO AND EDMOND A; FORDYCE, OF CHICAGO, ILLINOIS.

RECEIVING-BOX FOR PNEUMATIC DISPATCH-TUBES.

SPECIFICATION forming part of Letters Patent No. 525,583, dated September 4, 1894.

Application filed September 4, 1393- I Serial No. 484.761. (N0 model.)-

To all whom it may concern:

Be it known that we, LOUIS G. BOSTEDO and EDMOND A. FoRDYoE, of Chicago, Illinois, have invented certain new and useful Improvements in Receiving-Boxes for Pneumatic Dispatch-Tubes, of which the following is a specification.

This invention relates to a receiving box for a pneumatic dispatch tube of the class which is used to carry cash between the salesmens stations and the cashiers station in mercantile houses.

The box which is hereinafter described is applicable for use either at the cashiers station or at the salesmens stations, and some of the features thereof are adapted for use in boxes in intermediate positions in the line and the box may have a movable switch. We have shown it, however, as adapted to the cashiers station. These devices, which are sometimes called receiving boxes, have been made in various ways, and they usually comprise a branch tube connected with the receiving tube of the system and terminating with an open end to which a hinged door is applied, 'and which door is automatically opened by the impact of .the carrier thereon. The closing of the end of the branch tube by the door, we have found permits the forming of an air cushion above said door which is often of such strength or density as to sustain the carrier and prevent its proper discharge. Our improvements provide a terminal in which a relief or vent is furnished to prevent this air cushion. Afurther difficulty which has been encountered in the operation of these pneumatic dispatch tube systems is due to the fact that when the door is opened by the impact of the carrier thereon, the air rushes in through the door opening, there being a strong current induced by the passage of air through the main tube under suction. The vent above described permits of the escape of this air without passing through the branch tube in which the carrier is descending, and therefore the induced current does not operate to hold the carrier in the branch nor prevent its discharge. We have also further improved theconstruction of the;box by applying therein a regulating valve which can angular in form. The receiving or suction tube has been projected through such boxes with a branch or switch therein to deflect the carrier to the discharge aperture. It is diflicult to make these wooden boxes air tight, and they are unsightly even when carefully and expensively constructed. WVe makethe box from a single, integral casting which is interposed in the main tube and provide in this casting a section to which the separated ends of the main tube is connected, at delivery branch having a door pivoted thereto at its end, and a vent passage between the lower 'end of the branch above the door and the main tube section.

l In the accompanying drawings, Figurel is a sectional elevation through the box showing the ends of the main pipe connected thereto and showing the valve and its adj usting mechanism in elevation; and Fig. 2 is a sectional plan-below the line 22 of Fig. 1.

I In-the drawings,A A represent the separated ends of the main tube which are connected to the box. The latter is substantially triangular in outline and is cast integral hav-,

ing the straight section B and the curved branch or discharge pipe G which unite in a stem D which is connected to the section A of the main pipe. The lower end of the branch 0 is connected with the section B by "the semi-cylindrical pipe E. The lower end of the branch 0 is open and the hinged door F, which is hinged to the bottom wall of the semi-cylindrical pipe E, closes the discharge 'opening'of the branch, said door having an actuating spring to render it self-closing.

A valve G carried upon a short stud H, mounted upon a threaded bolt I threaded in the post J, slides onthe fiat bottom wall of the semi-cylindrical pipe E and is adapted to be projected into the bore of the sectionB so as to regulate the amount of airpassing ftherethrough; or, in other words, to regulatev the force of the current. This regulation will I do passing through a long pipe being greater than in passing through a short pipe, the valve furnishes means for equalizing the force of the blast in the two pipes.

In operation the carrier passes to the box in the direction indicated by the arrow and is deflected by the guide K into the branch tube, the

air current passing straight through the section B. The carrier being delivered with considerable force strikes the door F and opens it, passing out. Now, if there were no provision for permitting the air which passes into the.

tube 0 to pass to the suction tube, an air cushion would be formed above this door, but the semi-cylindrical pipe E furnishes an open passage or communication which prevents the formation of such air cushion. When the door is opened by the impact of the carrier thereon, the induced current of air rushing in through the opening would, in the absence of the passage furnished by the pipe E, tend to impede the delivery of the carrier, if not to wholly arrest it, but when the door opens the air which enters through the opening rushes through the pipe E into the suction pipe, taking of course the shorter course through said pipe rather than the longer route through pipe 0 and thence to the suction.

It will be observed that the door is hinged at a point between the inner side of the branch tube C and the section B. This is done for two reasons: first, to give a greater leverage on the door so that it may the more readily open by the impact of the carrier thereon; and, second, to permit the air which enters through the open door to pass more directly to the suction.

It will be observed by reference to the dotted lines in Fig. 1 of the drawings that there is a triangular space above the door when the same is open, so that the air may rush in and pass directly and by a short course into the tube A.

The box may be cast all in one piece, or it may be parted vertically or cast in matinghalves. The pipe 0 is preferably curved from end to end, first, because its delivery end is thus brought into a horizontal plane; and, second, because the curved form acts to retard the carrier to some extent and breaks the force of the discharge. The precise form of the parts is not essential. The pipes B and C are shown as being cylindrical and the pipe E as semi-cylindrical, its flat bottom adapting it to the flat door.

The relief or vent is applicable to receiv- 'having a curved branch having an open end Without limiting ourselves to precise details of construction, we claim- 1. A receiving box for pneumatic dispatch tubes adapted to be connected to the recoil- 8e ing and suction tubes, having a curved dis V l charge branch, and a vent or relief passage communicating with the branch and withklie suction tube, substantially as described.

2. A receiving box for pneumatic dispatclm} tubes adapted to be connected with the sepirated ends of the receiving and suction tub,

through which the carrier may be delivered, a pipe or passage connecting the branch its open end with the suction tube, and a hinged door for closing the end of the branch, 5}. substantially as described. I

3. A receiving box for pneumatic dispatch tubes adapted for connection with the sells-= 9? rated ends of the receiving and suction tubes and having a curved branch with an open end, a pipe or passage formed with'a flat bottom wall and communicating with the lower end of the branch and with the suction'tnbo, m an opening in said bottom wall anda hinged door applied to said opening, substantiallyal described.

4:. A receiving box for pneumatic dispatch tubes adapted for connection with the recoiv- 1.; ing and suction tubes and having a curved branch with an open end, aipe or passage 1 7 formed with a flat bottom wa l communicating with the lower end of the branch and with a the suction tube, an opening in said bottom n) wall, a hinged door applied to said opening, the hinged end of the door being arran intermediate the line of the inner wall of the branch and the suction tube, substantially as described. :13

5. A receiving box for pneumatic dispatch tubes cast integral and of substantially triangular form having a straight section adapted to be connected with the separated eudso! the dispatch tube, a curved discharge branch 4' with its opening arranged at right angles to the wall of the dispatch tube section, aguide arranged at the junction of said sections, a pipe or passage communicating with the branch at its lower end and with the auction I end of the 'main pipe section, and a hinged door in the lower wall of said pipe or passage, substantially as described.

6. A receiving box fora dispatch tube system constructed to provide a straight m :89

and adapted to be interposed in and form a the passage of airtherethrougb, substantially part of. the dispatch tube, a curved branch for as described.

delivering the carrier, a pipe or passage con- LOUIS G. BOSTEDO. necting the lower end of the branch with the EDMOND A. FORDYOE. suction of the dispatch tube, and a movable Witnesses:

valve arranged in said vent and projected FREDERICK O. GOODWIN,

into the dispatch tube whereby to regulate L. F. MOOREA.

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