US995254A - Telescopic mast for wireless telegraphy, signals, and similar uses. - Google Patents

Description

A. 1?. JUILLAO. TELESOOPIG MAST FOR WIRELESS TELEGRAPHY, SIGNALS, AND SIMILAR USES.

APPLICATION FILED-MAR. 23, 1910.

Patented June 13 2 SHEETS-SHEET 1.

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1 A.'F. JUILLAO. TELESGOPIC MAST FOR WIRELESS TELEGRAPHY, SIGNALS, AND SIMILAR USES. APPLIOATION rum) MAR. 23, 1910.

995,254, Patented-June 13, 1911.

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ALBAN FRANQOIS JUILLAC, OF PARIS, FRANCE, ASSIGNOR TO VICTOR POPP, OF PARIS, FRANCE.

TELESCOPIC MAST FOR WIRELESS TELEGRAPHY, SIGNALS, AND SIMILAR USES.

Specification of Letters Patent.

Patented June 13, 1911.

Application filed. March 23, 1910. Serial No. 551,051.

To all whom it may concern:

Be it known that I, ALBAN FnANgoIs J UILLAC, of 25 Rue de Meaux, in the city of Paris, Republic of France, engineer, have invented a Telescopic Mast for \Vireless Telegraphy, Signals, and Similar Uses, of which the following is a full, clear, and ex act description.

This invention relates to a telescopic mast, particularly adapted to serve as antenna support in wireless telegraphy as well as for any other similar use, signal-mast, etc.

The accompanying drawings illustrate, by Way of example, a. method of putting the present invention into practice.

Figure 1 shows in vertical section the mast unfolded in its entirety. Fig. 2 is a section, on a greater scale, of the lower part of the mast folded. Figs. 3 and 4 illustrate in form elevation and horizontal section the pawl device for hoisting the mast. Figs. 5 and 6 illustrate in plan view and in elevation the system for clamping the tubes when they are hoisted. Fig. 7 is a modification.

The mast is constituted essentially by pieces of tubes at a a which can enter freely into one another in the same way as a telescope, the bottom tube a; being carried by a base 6, on which the whole apparatus rests. Each tube, such as a for instance, is provided at its lower end with one or more internally arranged rings 0 c and at its up per end with an external ring (P, for engaging the adjacent tubes to guide the said tubes in their telescoping action. Interrupted ferrules c 6 shown more particularly in Fig. 4 are secured in each of the tubes near the bottom thereof and the said ferrules are adapted for engagement by a pawl h to hold the said tubes in adjusted position. The inner face of each of the said ferrules is beveled as shown in Fig. 2 so that when the tubes are telescoped, the respective ferrules rest upon each other and are in stepped relation as clearly shown in the said figure.

In the outer-most tube a, the ferrules are omitted as are also the rings above men tioned, and within the said tubes are arranged uprights f f secured to a circular plate 1) mounted for rotation in the tube. The said plate is carried by a platform to, on the base Z), and the plate is turned by means of a lever y, extending radially from the plate and passing through the slot 2 in the wall of the outer tube. The plate is guided by studs a2 depending from the bottom thereof and moving in arc-shaped grooves in the platform w. The sleeve 9 is mounted for sliding movement on the two uprights and the pawls h, before mentioned, are pivoted at i on the sleeve. The upper end of each of the pawls is normally forced outward by a spring j, arranged between the pawls and the sleeve and the said pawls are adapted to engage the under faces of the ferrules 0 e e c c and e. \Vhen the sleeve is moved upwardly on the standard by any suitable means, the said pawls will lift the tubes with which they are engaged and all of the tubes thereabove. The sleeve may be moved by means of a' crank shaft Z mounted on the base Z) and having winding thereon a double cable 79 passing between the uprights and over pulleys m and m arranged at the top of the said uprights, one pulley being journaled in each upright. One end of each cable is secured to the sleeve and passes upwardly and inwardly over the pulley of the adjacent standard and downward to a connection with the crank shaft, the said cables being secured to the sleeve at an.

Each of the inner tubes is provided at its upper end with a longitudinal slot 0 to make the tube more elastic and the said tube is encircled by a split coller q at the said end having at each end a radial lug 1", and the lugs are engaged by a clamp, comprisinga rod 8 passing through the lugs as shown in Figs. 5 and 6. One end of the rod is reduced and engaged by a washer held in place by a pin, while the other end is provided with diverging arms at. Adjacent to the arms the rod is provided with a cam surface lc adapted for engagement with the cam face washer 76.

As shown the contacting surface of the cam and collar are spiral and the collar 70 is preferably integral with the lug r. \Vhen the rod is turned by means of the arm t, it will be evident that the lugs will be moved toward or from each other depending upon the direction of rotation of the rod.

The operation of the device is as follows :VVhen the mast is folded in the position shown in Fig. 2 and it is desired to extend the same, the sleeve 9 is brought into such position that the pawls h engage the ferrules of the upper-most tube.

The crank shaft is now turned moving the sleeve upward on the standard and elevating the said tube a. lVhen the said tube has been elevated to its highest point, the top of the tube a is clamped on the bottom of the tube a by means of the rod 3. The sleeve is then lowered and engaged with the next tube a lVhen the sleeve is again moved upwardly, the tube a is lifted and also the tube a. \Vhen the tube a has reached its highest point, the top of the tube a is clamped on the bottom of the tube a and the sleeve is lowered and engaged with the bottom of the tube a. This operation is repeated until the mast is extended. When it is desired to fold the mast, the rod .9 connected with the tube a is turned to release the clamping ring, thus permitting the tube a to drop into the tube (5. The clamp connected with the tube a is then released and the process is repeated until all of the tubes are telescoped. The rods 8 are operated by means of wires engaging the diverging arms 2? and the tubes telescoped by means of their own Weight. Then the mast is folded the pawls h are placed beneath the ferrules e of the lower tube. In order to engage the pawls with the upper-most tube, the plate '0 is rotated on the platform w to bring the pawls into the space between the ferrules. It will be observed from an inspection of Fig. at that the said ferrules are arranged opposite each other and with a considerable space between their adjacent ends so that the pawls when brought into the said space may move upward freely Without interference from the ferrules.

If desired, the ring shown in Fig. 7 may be substituted for that shown in Figs. 1 to 6. In the said ring the pawls are operated by means of rods 1, integral with the rack 2, which is engaged by a pinion 3 on the crank shaft 4. The rods are beveled at their upper ends and contact with pins 5 on the pawls to move the upper ends of the said pawls inwardly to disengage them from the ferrules. In order to indicate the height necessary for the rods 1 to extend to release the pawls, a scale is provided on the plate 6. An inspection of Fig. 7 will show that the upper ends of the rods 1 are beveled, and the said ends engage beneath the pins 5 of the pawls, that is, between the said pins and the tube to disengage the said pawls.

Claims:

1. In a folding mast, members sliding in one another, means for tightening and un tightening the upper end of each member, a vertically movable sliding block carrying pawls, and ferrules integral with the members and cooperating with the pawls.

2. In a folding mast, members sliding in one another, means for tightening and untightening the upper end of each member, a vertically movable sliding block carrying pawls, and ferrules integral with the members, cooperating with the pawls and cut away on one part of their periphery.

3. In a folding mast, members sliding in one another, means for tightening and untightening the upper end of each member, a. vertically movable sliding block carrying pawls, ferrules integral with the members,

cooperating with the pawls and cut away on one part of their periphery and a rotating platform carrying the guides of the sliding block.

The foregoing specification of my telescopic mast for wireless telegraphy, signals and similar uses signed by me this eleventh day of March 1910.

ALBAN FRANQOIS J UILLAG.

Witnesses DEAN B. MASON, R. EHIRIOT.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents. WashingtoxnlD. C.

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