US2031044A - Safety pike - Google Patents

Description

L. JENSEN ET AL SAFETY PIKE Feb. l8, 1936.

Filed Feb. 19, 1935 I Fig.2

5 m W m 'INVENTORS Patented Feb. 18, 1936 umrap STATES PATENT OFFICE 2 Claims.

Our invention relates to pikes and more particularly to the pikes of the type used in setting telephone and telegraph poles, its primary object being the provision of a device' for avoiding the 5 hazards associated particularly with the storage and transportation of the pikes.

Another object of our invention is the provision of a pike having a prod which may be positioned in either operative or inoperative position with the point of the pike entirely concealed and protected in the inoperative position.

Another of our objects is the provision of a pike having a detachable prod with the parts so designed that the prod may be secured inthe pike in either operative or inoperative position.

Another of our objects is the provision of a device for attachment to a pike pole and having a reversible prod with an automatic latch for holding the prod in either of two positions.

Another of our objects is the provision of a pike which will absorb the shocks of the impacts to transmit the force of these shocks toward the center of the pike pole to avoid the splitting of the pike pole.

Having in view these objects and others which will be pointed out in the following description, we will now refer to the drawing, in which.

Figure 1 is a view in elevation of the upper end portion of a pike pole with our device in place thereon and with the pike in operative position.

Figure 2 is a view in median vertical section of the parts shown in Figure 1.

Figure 3 is a view in median vertical section with the prod in inoperative position and with the point of the prod entirely concealed and protected.

The device includes a ferrule ID, a cylinder H and a septum l2 between the ferrule and the cylinder, these parts being of integral construction.

absorb the shocks of the impacts. The sep'tum is provided with a central aperture I3.

The ferrule I0 is frusto-conical in shape, it being provided with the same taper as the taper at the upper end of the pole It. The prod consists of a base I5 which is slidable into and out of the cylinder II and also a point IS, the base l5 and the point It being of integral construction. The base I5 of the prod rests squarely on the septum l2 which will absorb the shock of the impacts when the pike is rammed with its point I6 into a telegraph pole. By reference to Figures 2 and 3 it will be seen that the parts are so proportioned that the prod may be reversed into the 65 Figure 3 position with the point It projecting The septum I2 is relatively heavy since it must through the aperture l3 of the septum. In this position the point N of the prod is entirely surrounded by metal to thus avoid any injury to the workmen such as frequently occurs with the pikes at present in use.

To prevent the accidental displacement of the d prod we provide a. latch of simple construction. The prod has a transverse aperture II which is shouldered at an intermediate point as shown in Figures 2 and 3. A pin I8 is seated in this aperture past the shoulder and its inner end is upset to prevent its accidental withdrawal. The pin l8 terminates in a button l9," said pin being surrounded by a coil spring 20. The cylinder H is also provided with an aperture of suflicient size to loosely receive the button I 9. The parts are so proportioned that the button l9 becomes operative in either the Figure 2 or the ,Eigure 3 position. The parts may be released from either position by pressing on the button 1' l9 and withdrawing the prod.

In use the parts are arranged as shown in Figures 1 and 2 and the pike is used in the ordinary manner. When the point It is rammed into the telegraph or telephone pole the shock of the impact is transmitted to the septum l2 and no part of this shock reaches the pin I8. This shock is further communicated through the ferrule ID to the wooden pole it. Since this pole is tapered and sincethe ferrule provides a tapered seat, the shock of the impacts will be transmitted in a radial direction toward the center of the pole. The only effect that this can have on the pole is to compress the wood of the pole and to force the end of the pole further into the ferrule Ill. The pikesatpresent in use soon become 'split and splintered at the upper ends of the poles but this cannot occur in the use of our pike.

The great advantage of our pike resides in the fact that the point lfi'may be entirely protected by a metallic wall. The pikes at present in use are exceedingly dangerous to workmen es pecially during transportation and'storage'. During transportation they are carried in trucks-and because of their length they extend beyondthe rear end of the truck. If they are arranged with their points in the forward end of the truck they become a serious menace to the driver of the truck. If they are arranged with their points projecting from the rear of the truck they become a seriousmenace to the workmen who load them onto the truck and remove them from the truck. This is due largely to the fact that the points in order to be eflective must be very sharp. Not

only are the points sharp but the edges are also sharp. Serious accidents frequently occur but protected from injury due to their coming in contact with objects which would otherwise break the points or dull .the edges.

Having thus described our invention in such full, clear, and exact terms that its construction and operationwill be readily understood by others skilled in the. artto which it pertains, what we claim as new and desire to secure by Letters Patent of the United States is:

1. A pike including a hollow cylinder and a socket member and a septum therebetween, said cylinder and socket and septum being of integral construction, a prod having a base portion and a point portion, said prod being insertable in said cylinder in either of two positions with either the point portion or the base portion projecting therefrom, said septum being provided with a central aperture for receiving the point 01 said prod, and a releasable latch for holding said prod in either 01' its two positions.

2. A pike including a irusto-conical socket member for receiving the tapered end portion of a pike pole, a hollow cylinder projecting outwardly from said socket member, a septum between said socket member and said cylinder and through the aperture in said septum.

LARS JENSEN. RAY SHERMAN.

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