US2687116A

US2687116A - Marker

Info

Publication number: US2687116A
Application number: US209466A
Authority: US
Inventors: Jesse F Sheets
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-02-05
Filing date: 1951-02-05
Publication date: 1954-08-24
Anticipated expiration: 1971-08-24

Description

Aug- 24, 1954 J. F. sHEE-rs 2,687,116

MARKER Filed Feb. 5, 1951 sof #3A ere3 476. 4. If4.3 46 4a A T TORNE Y Patented Aug. 24,1954

UNITED STATES PATENT ori-ICE MARKER Jesse F. Sheets, Pasadena, Calif.

Application February 5, 1951, Serial No. 209,466

2 Claims. 1

This invention vrelates to a marker specically adapted to use in marking tires of parked vehicles.

It is generally conventional practice in police departments throughout the country to check on overtime parking by periodically marking one tire of each car parked in a particular parking zone. After an interval of time in excess of the legal parking limit in that zone, the cars therein are again checked. Any car bearing the original marking is obviously overparked. In order to mark a maximum of cars in a minimum of time, a mounted policeman, carrying an elongated chalk or crayon holder, drives past the parked cars at moderate speed marking one tire of eachcaras he passes.

l have now developed marking means specifically adapted for this use and which has an important feature of a resilient connectionbetween the chalk holding portion of the marker and the handle portion. This feature is of importance because of the fairly strong impact frequently resulting from attempting to mark a tire while riding past a car on a motorcycle. By supporting the chalk resiliently with respect to the handle, chalk breakage, as a result of such impact, is minimized and the tendency for such an impact to knock the marker from the hand oi the user is likewise minimized.

In one embodiment the marking means of the invention comprises an elongated handle, a collet adapted to receive and hold a length of marking chalk, and means resiliently joining the collet to the handle. In preferred practice the collet is resiliently joined to an end of the handle to extend therefrom atan angle to the longitudinal axis of the handle. This angular orientation of the collet has the obvious advantage` of `facilitating side marking of a tire from a position above the tire.

The term chalk as used herein contemplates any type of marking material such as conventional chalk, wax marking sticks and the like. The type of marking medium employed in the apparatus of the invention forms no part of the invention apart from the fact that such medium must be used to impart utility to the apparatus. v

The invention will be clearly understood from the following detailed description taken in conjunction with the accompanying drawing in which:

Fig. 1 is an elevation view of one form of the invention;

Fig. 2 is a section taken on the line 2-2 of Fig. 1;

fol. `12o-9) 2 Fig; 3 is a section taken on the line 3--3 of Fig. 2;

Fig. 4 is a section of an alternative form of the apparatus taken on a plane generally at right angles to the plane of Fig. 3; and

Fig. 5 is a partial perspective view showing an alternative means for resiliently connecting the marker collet to the marker handle.

`Referring to Figs. 1 to 3, the embodiment of the invention there shown comprises an elongated handle IU conveniently having a rubberized hand grip II aiiixed at one end and a collet I4 joined to the handle I6 to project therefrom at an angle from the longitudinal axis of the handle. The preferred manner of joining the collet I4 to the handle I0 is shown in Figs. land 2 and comprises a pair of square sectioned coil springs I6, Il, each spring having extending end sections embedded respectively in the adjoining ends of the handle It and the c01- let I4. I

Conveniently the adjoining ends of the handle and collet are drilled to receive the ends of the two springs I6 and I'I. In Fig. 2 collet Irl is shown to have a pair of receiving holes 2d, ZI extending inwardly from an end face of the collet. Set

screws

24, 25 are set in the collet Ill adjacent the spring receiving end to clainp the inserted ends of springs I6, Il in the receiving holes 20, 2l respectively. The set screws are each positioned on an elongated chord oi the circular section of the collet rather than on a diameter thereof to achieve the necessary purchase to hold the springs in the collet and to avoid weakening of the collet, as might result from both set screws being mounted on the same diameter or on a shorter chord. The opposite ends of springs I6 and I1 are similarly held in the end of handle I0, one of the corresponding set screws 21 being apparent in Fig. 1.

The collet itself may take several forms, a preferred form being shown in Fig. 3 as constituting a section taken on the line 3-3 of Fig. 2 and an alternative form being shown in Fig. 4 through a section perpendicular to the section of Fig. 3. Referring to Fig. 3, collet I4 there shown comprises a cylindrical body 3B having an enlarged elongated bore 3I extending from one end with the tubular portion of the body as formed by the bore being split by a plurality of evenly spaced grooves, one of the grooves 32 being visible in Fig. 3. Each of the grooves is relieved at its inner end by a hole through the body wall, the hole 33 associated `tial perspective View oi Fig. 5.

assigney end thereof with the tip of the tubular portion of the body being beveled and designated in the drawing as 30B. A nut 3E is internally threaded to screw onto the threads 3ft in the body and is beveled internally at its outer end to engage against the beveled tip 39B of the body. With the nut 36 backed away from the body, a length 38 of marking chalk shown in phantom in the gure may be inserted into the collet. The chalk is clamped therein by tightening up the nut 36 to exert a pressure through the adjoining beveled surfaces of the nut and collet, binding the chalk in the collet.

The alternative form of collet as shown in Fig. 4 likewise includes a body il@ having an enlarged cylindrical bore l2 throughout a major portion of its length. The body walls of the surrounding bore are, as in the foregoing ernbodiment, provided with diametrically opposite slots 43, td terminating at their inner ends at relievingr holes lSA, MA, respectively. Slotting of the body in this manner provides a flexibility necessary to clamp the chalk in the collet. 1n this embodiment the opposite end of the body 69 is provided with a tapered pipe thread d6, and an associated collet nut i8 is threaded internally to engage the thread L16. Clamping action on the chalk (chalk 59 shown in phantom) is determined by the degree to which the nut lil is screwed onto the body 43.

Conveniently the collets, either of the type shown in Fig. 3 or of the type shown in Fig. l,

are made of tubular stock with the spring re Ceiving end being plugged for purposes of rigidity and for receiving the spring ends. The manner in which the particular collet is constructed is a matter of choice and forms no part of the present invention.

An alternative form of joining a collet of the types shown in either Figs. 3 or 4 to the type of handle shown in Fig. l is shown in the par- In this figure a handle 93 is joined vto a collet 52 by means of a single relatively broad leaf spring 54, the adjoining ends of the handle and collet respectively being slotted to receive the opposite ends of the leaf spring f. Set screws 55, Se in the handle G and collet 92, respectively, serve to hold the embedded ends to the leaf spring therein. f

Various methods of resiliently joining the collet to the handle have been experimented with.

To date the tvvo` means shown in the accompanying drawing are by far the most satisfactory with the square sectioned spring being considerably superior to the leaf spring as shown in Fig. 5. A circular sectioned coil spring is entirely unsatisfactory as not being sufciently rugged in comparison to the square sectioned spring, as illustrated, to withstand the repeated jarring accompanying use of the marker' for the purpose for which it was designed.

I claim:

1. Marking means comprising an elongated handle, a collet adapted t0 hold a length of marking chalk, a pair of square sectioned coil springs, means anchoring one end of each spring in an end of said handle and means anchoring the other end of each spring in an end of the collet, each spring traversing in excess of one loop about an axis normal to the longitudinal axes of the handle and collet so that the collet lies at an angle and points away from the longitudinal axis of the handle..

2. Marking means comprising an elongated handle, a collet adapted to hold a length of marking chalk, a square sectioned coil spring, means anchoring one end oi the spring in an end of the handle and means anchoring the other 'end of the spring in an end of the collet, the spring traversing in excess of one loop about an axis normal to the longitudinal axes of the handle and collet so that the collet lies at an angle to and points away from the longitudinal axis of the handle.

References Cited in the le of this patent UNITED' STATES PATENTS