US1385129A - Cycle construction - Google Patents

Description

R. S. HEISE. CYCLE CON'STRUT|0N. APPLICATION FILED DEC-I8, 1919.

1,385, 1 29. V Patented y 19, 1921.

2 SHEETS-SHEET 1.

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E -x I R. S. HEISE.

CYCLE CONSTRUCTION.

APPLICATION FILED 056.18, mm.

1,385,129, Patented July 19, 1921.

2 SHEETS-SHEET 2..

UNITED STATES PATENT OFFICE.

BOSGOE Si HEISE, OF MIDDLETOWN, OHIO, ASSIGNOR TO THE MIAMI CYCLE -& (10., OF MIDDLE'I'OWN, OHIO, A CORPORATION OF OHIO.

CYCLE CONSTRUCTION.

Specification of Letters latent.

Patented July 19, 1921.

Application filed December 18, 1919. Serial No. 345,897.

To all whom it may concern:

Be it known that I, Rosoon S. Hnisn, a citizen of the United States, residing at Middletown, in the county of Butler and State of Ohio, have invented a new and useful Improvement in Cycle Construction, of which the following is a specification.

My invention relates more particularly to improvements in the manufacture of seatposts and seat-post fastenings for cycles; and my primary objects are to simplify and reduce the cost of manufacture and produce a more rigid and stable construction. Another object, and this in connection with the production of the seat-post fastening, is to provide a construction of fastening whereby the seat-post may be adjusted up or down, at will, easily upon releasing the fastening and be held rigidly in vertically adjusted position, and against turning, when the fastening is adjustedto securing position.

Referring to the accompanying draw- 1ngs-- Figure 1 shows by a view in elevation, a seat-post cluster with a seat-post secured therein, all in accordance with my invention. Fig. 2 is a section taken substantially at the irregular line 22 and viewed in the direction of the arrows. Fig. 3 is a view in elevation, with certain parts broken away, of the seat-post and the reinforcing tube surrounding it. Fig. 4 is a view in end elevation of the structure shown in Fig. 1. Fig. 5 is a view in elevation, with certain parts broken away and others sectioned, of the two parts from which the seat-post is formed; and Fig. 6, a perspective view of the reinforcing tube shown in Fig. 3.-

In the constructing of the seat-post in accordance with the preferred embodiment of my invention, I provide a seat-post T 7 and a relatively short length of steel tubing 8 forming the seat-post stem. The seat-post T 7 is preferably formed of a steel forging, the short angle-section 9 thereof being preferably drilled as indicated at 10. The diameter of the portion, 9 of the T and the tube 8, is substantially the same andthese parts are united together in end-wise abutting relation as shown in Fig. 1, in any suitable manner, preferably by the electric welding process. By this method a seat-post may be quickly manufactured and presents a high degree of rigidity.

In the particular construction shown, the

lower portion of the stem 8 is formed with a flat part, indicated at 11, for cooperation with the seat-post fastening means hereinafter referred to, this flat part being preferably. produced by flattening the metal of the part 8 from a point near its upper end, pref erably to its opposite extremity, as shown, by subjecting it to the action of a punch press to cause this part of the tube to be depressed substantially as shown in Fig. 2, without varying the diameter of the portion of the tube not thus acted upon. In this connection it may be stated that by depressing the tube 8 as stated provision is made not only for a flat surface, cooperating with other parts as hereinafter stated, to fasten the seat-post in position, but the seat-post is actuallystronger than it would be if not so flattened.

Referring now more particularly to the feature of fastening the seat-post, a cluster fitting is represented at 12, this fitting being hollow and provided with three lugs 13, 14 and 15. The lug 13 extends forwardly and generally in a horizontal direction for attachment to the rear end of the upper frame bar of the cycle, and the lugs 14 and 15 extend downwardly and rearwardly for connection with the upper ends of the rear tubes of the frame. The cluster fitting referred to is of common and well-known construction, it being split along its rear side, as indicated, and adapted to be drawn to gether for gripping the seat-post in position, by means of a pinch bolt represented at 16. The cluster fitting is provided with a tubular reinforcement represented at 17 which is brazed, or otherwise united, to the cluster fitting in the position shown in the drawings, this reinforcement being split along the line 18 throughout its length, the reinforcement 17 adjacent the pinch bolt 16 being cut away, as indicated at 19, to permit the pinch bolt to extend into such position relative to the flattened portion 11 of the seatpost stem that it will engage this flattened portion and prevent the seat-post from turning when the pinch bolt is tightened, the latter being preferably formed with a flattened portion 20 which opposes and engages the flattened portion 11. It will be understood that the seat-post stem fits the reinforced cluster construction sufficiently loosely when the pinch bolt nut 21, is loosened, as to permit the seatpost to be adjusted up and down, but will become firmly clamped thereto by friction when the nut 21 is tightened. The fiat portion 11 on the seat-post serves, in conjunction with the pinch bolt, to prevent the seatpost from turning, and this resistance to turning is greatly augmented by also providing a flat on the pinch bolt. The pinch bolt is preferably free to rotate slightly and thus upon tightening the nut 21 the bolt will rotate until the upper corner of the fiat forcibly bears against the flattened portion 11 of the seat-post, and thus any further downward movementof the seat-post, as, for example, by the weight imposed thereon by the rider, will cause the pinch bolt to act somewhat as an eccentric, automatically gripping the seat-post tighter and preventing further slippage of the same.

In forming the reinforced cluster 12 the sheet of metal forming the tube 17 is preferably bent into a condition wherein its opposed edges meet and in this condition secured to the cluster 12 as explained, the slot 18 being then cut in the tube 17 While I have illustrated and described certain particular embodiments of my invention and certain particular methods of manufacture, I do not wish to be understood as intending to limit my invention thereto, as the structure may be variously modified and altered and the manner of manufacture varied, without departing from the spirit of my invention.

What I claim as new and desire to secure by Letters Patent is:

1. A seat-post comprising an angle shaped solid bar and a tubular stem, the said bar having a portion of the metal removed from one of its ends to provide a recess therein the surrounding wall of which is of the same gage and diameter as that of the tubular stem, said recessed end of said bar and an end of said tubular member being united in endwise abutting relation, whereby to form an integral structure for the purpose set) forth.

2. In a cycle construction, the combination of a split cluster fitting, a seat-post extending into said fitting and having a flat portion, and a pinch bolt having a flat portion on a side thereof, in said fitting extending transversely of said post and posi tioned to engage at its fiat portion with said fiat portion of the seat-post.

3. In a cycle construction, the combination of a split cluster fitting, a seat-post extending into said fitting and having a flat portion, and a pinch bolt on said fitting oxtending transversely of said post and positioned to engage said flat portion.

4. In a cycle construction, the combination of a split cluster fitting, a reinforcing split tube provided as a part separate from the frame of the cycle and located in said fitting and united therewith and forming the openin for receiving a seat-post, and means for contracting said fitting and said reinforcing section.

5. In a seat-post, the combination with a stem formed from a tube having a portion thereof forced inwardly to provide a depression having flanking bearing edges, of a securing member formed with a fiat face adapted to abut against said edges.

6. In a seat-post, the combination with a stem formed from a tube having a portion thereof forced inwardly to provide a depression having flanking bearing edges, of a securing member formed with a fiat face adapted to abut against said edges and extending transversely thereof.

7 In a cycle construction, the combination of a split cluster fitting, a reinforcing split tube in said fitting and united therewith and forming the opening for receiving a seat-post, and means for contracting, said fitting and said reinforcing section, said reinforcing section having an opening in its side into which a side of said means extends, for the purpose set forth.

ROSCOE S. HEISE.

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