US1523195A

US1523195A - Railroad spike

Info

Publication number: US1523195A
Application number: US702370A
Authority: US
Inventors: Frank S Harrington
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-03-27
Filing date: 1924-03-27
Publication date: 1925-01-13
Anticipated expiration: 1942-01-13

Description

Jan. 1925- 1,523,195

S F. s. HARRINGTON RAT LROAD SPIKE Filed March 27, 1924,

WITNESSES IN V EN TOR b v S EWINK S. HfiRR/NG a/v W A TTORNE YS FRANK s. HARRINGTON, or'sLoATsBURG, NEW .YoRK.

RAILROAD SPIKE.

Application filed March 27, 1924. Serial No. 702,370.

To all whom it may concern Be it known that I, FRANK S. HARRING- TON, a citizen of the United States, and a resident of Sloatsburg, in the county of Rockland and State of New York, have invented a newfand Improved Railroad Spike, of which the following is a full, clear, and

' exact description.

This invention relates to a new and improved form of railroad spike, and has for an object the provision of a simple and efficient spikewhich is provided with means whereby when driyen into a railroad tie it will enter in the manner of a screw and, in 15 a corresponding manner, will be more diflicultto be removed, either by the action of the trains on the rails or by reason of any deliberate force applied thereto.

Another object concerns the, provision of means on a spike for preventing its removal from a tie, such means being very readily incorporated in the spike in a simple'and economical manner whereby these spikes can be produced at a low cost. L

The invention is illustrated in the drawings, of whichv v Figure 1 is an elevation of the spike; Fig. 2 is a similar elevation taken at right angles to Fig. 1;

' Fig. 3 is a plan view of a modified form of spike; and L Fig. 4 is a partial elevation of the modified form. I

The forms of the invention shown in the drawings are preferred forms, although it is understood that modifications in the construction and arrangement of the parts and in the character of the materials used may the manner of a screw. These grooves are preferably formed with upwardly facing shoulders which, as he spike is embedded in the wood of the tie, will be so related with respect to the wood as .to resist any retractive movement of the spike. The grooves are cut in the spike and each slopes downwardly and around the spike a given distance.

that the topmost groove curves downwardly and around the spike a given distance and that the next groove, B, curves downwardly around the spike a similar distance and in the general direction that a continuous spiral curve would follow A similar course is taken by the successive grooves C and D. It will be noted that the bottom groove E and another associated groove, such as F (see Fig. 2) have shoulders 5 which slope downwardly and around the groove. These shoulders, however, face downwardly and then slope is much greater than the slope of the prevlously mentioned shoulders l. A

The reason Why the shoulders 5, formed by cutting grooves near the lower end of the spike, face downwardly, and the reason why their slope is much greater is so that as the spike is driven in these shoulders will act, in encountering the material of the tie, to turn the spike as it advances into the tie, and by turning the spike will enter the tie without disrupting its material too much.

By thus reducing the disruption or dis- It will, therefore, be observed, in the general conception of the invention, that I have provided a simple and. eflicient spike which has formed on it two kinds of grooves. The grooves extending from the top of the spike to a point near the bottom are provided with upwardly facing shoulders and their main purpose is to prevent the retractionof the spike, whereas the grooves formed at the bottom of the spike are provided witli'downwardly facing shoulders and a much greater pitch and their main function is tocause the spike to turn as'itenters the tie. It is also obvious that these grooves may be cut in the spike by machinery or by hand or may be 1 formed in the-process of casting or otherwise forming the spikes.

In Figs. 3 and 4 the spikehas been modi- 5 fied by cutting one side of the, head 3 off, as is usual in railroad spikes, so that excess material not necessary is eliminated.

What I claim is A railroad spike, which comprises a body 10 portion having a tie entering point and a plurality of spirally disposed grooves throughout its length, each of said grooves provided with an upwardly facing shoulder vvhereby the retraction of the spike from the he is resisted by said shoulder, said spike havlng a plurallty of grooves adjacent the tie entering point provided Withdownward- I FRANK HARRINGTON.