US842354A - Carrier for pneumatic-despatch-tube apparatus. - Google Patents

Description

PATBNTED JAN. 29, 1907.

0- F. STODDARD. CARRIER FOR PNEUMATIC DBSPATGH TUBE APPARATUS.

APPLIOATION FILED MAY'20. 1904.

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PATENTED JAN. 29, 1907.

C. F. STODDARD. CARRIER FOR PNEUMATIC DESPATGH TUBE APPARATUS.

APPLIOATION FILED MAY 20. 1904.

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CHARLES r. STODDARD, OFBOSTON, MASSACHUSETTS, ASSIGNOR TO AMER ICAN PNEUMATIC SERVICE COMPANY, or DOVER, DELAWARIQ'A con- PORATION OF DELAWARE.

CARRIER FOR PNE'UIVIATlC-DESPATCH-TUBE APPARAT S.

Specification of Letters Patent.

Application filed May 20,1904. Serial No. 208,812.

To (LZZ whom it may concern: I I

Beit known that 1, CHARLES F. STODDARD, of Boston, in the county of Suilolk and State of Massachusetts, have invented certain newv and useful Improvements in Carriers for Pneumatic Despatoh Tube Apparatus, of which the following is a specification.

My invention relates to certain new and useful improvements in carrier-locks for pneumatic-despatch apparatus, and especially to carriers for large-sized tubes for carrying inailmatter, merchandise, and the like.

The object of my invention is to produce a lock which is simple in construction and will not allow the cover to open after the carrier is inserted into the tube. I

My invention consists of certain novel features hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, which illustrate a construction embodying my invention, Figure 1 is an end elevation of the inner end of the carrier, showing the cover and the locking mechanism in their normal locked positions. Fig. 2 is a similar viewoi' the car rier and cover, but-showing the safety lever swung out. cover and carrier, but showing the parts in their unlocked position. Fig. 4 is a sectional view on theline X Y -Z,Fig. 3, through. one end of the carrier and showing theparts of the locking device unlocked, as shown in Fig. 3. Fig. 5 is a sectionalview on the line X Y Z, Fig. 1, Showing the parts of the look ing device in theirlocked position, as in Fig. 1.

Like letters of reference refer to like parts throughout the several views.

A represents the shell of a carrier, the top of which is reinforcedby the band A". To the shell A by means of the hinge A is pivoted the cover A The upper portion of the cain-bolt A is securely fastened to the lever A at A in such a way that the cam-bolt A may be swung around by the lever A safety-lever A is pivotally connected to the cover A at A in such away that it can swing freely about the pivot. The portions of the locking-lever A and the safety-lever A7 immediately around their pivots are shaped so as to fornianinterlocking device, so that it is possible to swing the lever A onlywhen the Fig. 3 is a similar view of the.

Fig. 1.. This safety-lever The lever A is in the position shown in Fig. 3 and only possible to swing the safety-lever A is in the position shown in when the lever A Fig. l.

The cam portion B of the. cam-bolt A is shown by dotted lines in Figs. 1, 2, and 3. It is so shaped that the. side B will not extend into the slot B 'in the shell A when said cambolt A is in theposition shown in'Figs. 4L and 3,in which position the cover A is not locked to the shell A. When the cam-bolt A is swung into the position shown in Figs. 1 and 5, the cam portion B extends into the slot B B of the shell A and the cover A respectively, and also extends through the slot B in the reinforcing-plate A, Fig. 5.

In Fig. 3, which shows the locking parts in their positions when the cover A is not locked to the Shell A, it will be seen that the lever A can be freely moved into the position shown A and the concave rounding portion C of Patented Jan. 29,1907.

the lever A are concentric with the pivot A,

upon which the lever A swings; This arrangeinent makes it impossible to swing the safety-lever A into the positionshown in Fig. 1. until the lever'A is swung into the position shown in Fig. 2, which brings theConcave'rounding portion 0 of the lever A concentric with the pivot A upon which the safety-lever A swings. The convex rounding portion C of the safety-lever A is concentric with the pivot A upon which the safety-lever A swings, and constructed to mesh with the concave rounding portion C of the lever A when said lever A is in the posi tion shownin Fig. 2, so that it is possible with the lever A in this position, Fig. 2,'to swing the safety-lever A into the osition shown in 7 is pivoted near the periphery of the cover A3, so that'when it is swung into the position shown in Fig. 3

it extends beyond the circumferential limits 1 of the carrier and makesit impossible to insert the carrier into the transmission-tube and also makes it impossible for the lever A to be swung from the position shown in Fig. l to that shown in Fig. 2 while the carrier is in'the transmission-tube.

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As before explained, when the cover A is unlocked from the shell A the parts are in the position shown in Fig. 3 and the cycle of operation of the lock is as follows: The coverv position of the lever A is reached. Then the safety-lever A is swung into the position shown in Fig. 1, leaving the carrier locked and ready for transmission. As before explained, when the lever A is swung from the position shown in Fig. 3 to that shown in Fig. 2 the cam-bolt A, being securely fastened thereto, swings with the lever A and the cam portion B swings into the slots B B B. The button D is riveted to the cover A in such a position that when the safety-lever A is swung into the position shown in Fig. 1 it springs over the same and is held in that position. In unlocking cover it is necessary to swing the safety-lever A from the position shown in Fig. 1 into that shown in Fig. 2 before the lever A can be moved from the position shown in Fig. 1 to that shown in Fig. 3,

because the convex rounding portion C of the safety-lever A is meshed with the concave rounding portion C of the lever A After the safety-lever A is swung from the position shown in Fig. 1 to that shown in Fig. 2 the lever A is swung from the position shown in Fig. 1 to that shown in Fig. 3, and thereby locks the safety-lever A into the position shown'in Fig. 3, because the convex rounding portion C of the lever A is meshed with the concave rounding portion C of the safety-lever A The shoulder S on the safety-lever A limits the motion of the safetylever A when it is swung from the position shown in Fig. 2 to that shown in Fig. 1. When the safety-lever A is swung from the position shown in Fig. 1 to that shown in Fig.

2, the portion S engages the shoulder S of the lever A thereby limiting the swing of the safety-lever A in this direction. The motion of the lever A in swinging it from the position shown in Fig. 2 to that shown in Fig. 3 is limited by the portion S engaging the convex rounding portion C of the safety-lever A I do not limit myself to the arrangement and construction shown, as the same may be varied without departing from the spirit of my invention.

Having thus described the nature of my V invention and set forth a construction embodying the same, what I claim as new, and

desire to secure by Letters Patent of the United States, is-

1. In a carrier for pneumatic-despatchtube apparatus, a shell, a cover hinged to said shell, a bolt for locking said cover to the shell, a pivoted member for operating said bolt and a second pivoted member for securing the first-mentioned pivoted member,

each of said pivoted members having a surface concentric with its own pivotal point and a surface concentric with the pivotal point of the other member and said pivoted members operating so that neither can be turned except when concentric surfaces reg ister with each other.

2. In, a carrier for pneumatic-despatchtube apparatus, a shell, a cover hinged to said shell, a bolt for locking said cover to the shell, a pivoted lever for operating said bolt, and a safety-lever pivoted on said cover; each of said levers having a surface concentric with its pivotal point and a surface con centric with the pivotal point of the other lever, and said levers operating so that neither can be turned except when concentric surfaces register with each other.

3. In a carrier for pneumatic-despatchtube apparatus, a shell, a cover hinged to said shell, a bolt for locking said cover to the shell, a pivoted member for operating said bolt and having a curved surface concentric with its pivotal point, and a second pivoted member having a curved surface concentric with the pivotal point of the pivoted member for operating the bolt; and said pivoted members operating so that the boltoperating member cannot be turned except when the two concentric surfaces register with each other.

4. In a carrier for pneumatic-despatchtube apparatus, a shell, a cover hinged to said shell, a bolt for locking said cover to the shell, and mechanism for securing said bolt comprising two pivoted members with one of

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