US723580A - Combined cap and truck for flagstaffs. - Google Patents

Description

N0. 723,580. PATENTED MAR.24, 1903-. A. A. BRENGEL. QOMBINED GAP AND TRUCK FOR FLAGSTAFFS. APPLICATION FILED-11136.15, 1902.

no MODEL. 1

WITNESSES? a1 I 1 v j fl-dw e New Jersey, have invented certain new and to form the socket for the correspondingly- I cal elevation of the upper part of the flagstaif UNITED STATES PATENT FFICE.

COMBINED CAP AIND TR UCK FOR FLAGSTAFFS.

SPECIFICATION forming part of Letters Patent N 0. 723,580, dated March 24, 1903.

Application filed AugnstlB, 19 02.

T0 (oZZ whom it may concern:

Be it known that I, ANDREW A. BRENGEL, a

citizen of the United States, and a resident of Jersey City, county of Hudson, and-State of.

useful Improvements in a Combined Cap and Truck for Flagstaffs, Masts, 850., of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof, in which similar letters of reference indicate corresponding parts.

The subject of myinvention is a combined cap and truck for flagstaffs, masts, &c., and has for its more prominent objects simplicity, durability, and cheapness of construction and readiness and security of adjustment.

In addition to the objects mentioned it is also designed to efficiently protect the upper end portion of the wooden pole from the dele-v terious efiects of moisture.

With the above and other purposes in view the invention consists in a combined cap and truck the body of which is constituted by a casting, preferably of malleable iron,j presenting a top annular depending flange located at such distance from the end portion of the pole to shed moisture and water clear of the same and an integral tubular stem coarsely threaded on its exterior and interiorly provided with a fine thread, said stem centrally depending from the top to adapt it to engage a vertical recess therefor in the upper extreme portion. of the pole to securely attach the casting thereto. Also on the under side of the casting are diametrically-located hangers integrally depending and in such position relative to contiguous portions of the flange that bearings will be provided for the shafts of sheaves for the halyards. The interior fine-threaded opening of the stem isiadapted threaded end portion of the spindle carrying the ball.

There are other novel features connected with the invention, which will be explained in the succeeding detailed description.

In the accompanying drawings, forming part of thisspecification, Figure l'is a vertior pole with mynovel combined cap and truck secured thereon, said cap and truck being shown in sectional elevation. Fig. 2 is "its base.

sen-aiiio. 119,690. (Ncmo'deL) an inverted plan view of the cap and truck detached. Fig. 3 is a transverse section through the cap and truck, the section being taken in the plane indicated by the broken line 3 3, Fig. 2, and the upper end of the spindle-opening being closed by a threaded plug; and Fig. 4 is a view somewhat similar to Fig. 2 and showing a modification.

The upper end portion A of the Wooden staff or pole has its extremity horizontal, which in the case of existing spars can be secured by sawing off the customary tenon at Centrally in the staff-top an openingis bored of a diameter suitable for engagement .by a standard thread and having a suitabledepth.

The body portion of the combined cap or truck is constituted by a casting, preferably 'of malleable iron and presenting in a single piece the top 13, of considerably greater diameter than that of the stafi end, so that the integral marginal flange B, with which said top is provided, will depend some distance from the contiguous portions of the pole. It will be observed that the upper surface of the top slopes or inclines from its center toward its margin.

Centrally depending from the under side of the top B is a tubular stem B externally coarsely threaded, as'indicated at b, and containing an interior thread of fine gage, as designated by b. The threaded passage of the tubular stem continues through an opening in the top. On the under side of the top, near the outsides thereof, are diametrically-located hangers b integrally depending and in such relation with the contiguous portions of the flange B that bearings are formed for the short shafts c of the halyard-sheaves C. The vhangers b are each connected to theflange B by means of an integrally-formed brace 6 Each sheave and'its shaft can be secured in position by first introducing said sheave betweenits hanger and cooperating portion of the flange B, so that its axial opening will register with transverse perforations in both the hanger and flange portion, and a short shaft 0, headed at its inner end, inserted from the innerside of the hanger to pass successively through said hanger, the sheave and the flange portion, that part of the shaft which projects beyond the latter being riveted to permanently retain said sheave in position, but permitting the free rotation thereof. VViLh a View of maintaining each sheave O in proper relative position the flange portion B contiguous to each sheave, is somewhat thicker and presents an inner face par allel with the adjacent side of the sheave.

It will be seen by reference to Fig. I that the diameter of the stem B is such that it can be screwed into the top recess in the pole, and thereby secured tightly in position, with the lower horizontal face of the top B bearing firmly upon the extremity of the pole. When thus adjusted, the ball-spindle D can be screwed into the threaded socket presented by the top opening and threaded passage in the stem. The latter consequently constitutes a means for firmly securing both the combined cap and truck and the ballspindle in position. Moreover, the halyardsheaves and the moisture-shedding flange are properly maintained relative to the pole.

If the ball and its spindle are dispensed with, the spindle-socket can be effectually closed to protect the stem and pole from access of moisture by asmall threaded plug D, (indicated in Fig. 3,) the upper end of which has a transverse score or channel (I, by which it may be readily screwed into and unscrewed from position by the employment of a suitable screw-driver.

The inner bearings for the sheave-shafts may embody, if desirable, webs 13, formed integrally on the under side of the top B and merging with the marginal flange B at opposite points, as shown by Fig. 4: of the drawings. As thus conditioned the webs serve the dual function of affording bearings for the inner ends of the sheave-shafts and as reinforces or strengthening-ribs for the casting.

From the foregoing description it will be appreciated that a combined cap and truck -embodying my invention is not only simple, durable, and comparatively inexpensive, but it is capable of being easily and securely adjusted in position.

I do not desire to limit myself to the particular details of construction disclosed herein, but reserve the right to such modifications as are fairly withinthe scope of myinvent-ion.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is--' 1. In a combined cap and truck for flagstafis, &c., a casting integrally presenting a top having upper sloping face, central threaded tubular stem depending from said top, interiorly threaded and having its passage communicating through anopening in the top, a marginal depending flange, and inner contiguously-located hanger; and a sheave-supporting shaft in said hanger and flange.

2. In a combined cap and truck for flagstaffs, &c., a casting integrally presenting a top, a central externally -threaded tubular stem depending from the same and containing a threaded passage communicating through an opening in the top, a marginal flange and contiguously-located hanger; a sheave-supporting shaft in said hanger and flange, and a ball-spindle in threaded engagement with the socket presented by the top opening and stem-passage.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two Witnesses, this 21st day of July, 1902.

ANDREI/V A. BRENGEL.

I Witnesses:

EDGAR A, MoRnoRT, B. PATTERSON.

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