US961020A

US961020A - Tennis-court marker.

Info

Publication number: US961020A
Application number: US54287110A
Authority: US
Inventors: Earl A Robinson
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-02-09
Filing date: 1910-02-09
Publication date: 1910-06-07
Anticipated expiration: 1927-06-07

Description

E. A. ROBINSON. TENNIS COURT MARKER. APPLICATION FILED r3341 Patented June lA/l/E/VTOR [Evil 7. foam 50,

WITNESSES ATTORNEYS FDR.

EARL A. ROBINSON, OF EMPORIA, KANSAS.

TENNIS-COURT MARKER.

To all whom it may concern:

Be it known that I, EARL A. ROBINSON, a citizen of the United States, residing at Emporia, in the county of Lyons and State of Kansas, have made certain new and useful Improvements in Tennis-Court Markers, of which the following is a specification.

My invention relates to improvements in devices for marking the lines of tennis courts and other purposes, and has for its object to produce a simple, cheap and eflicient implement which may be used for marking off on the ground the necessary lines,

boundaries, etc, of tennis and other courts,

and one which can be readily filled with the marking material and which can be used on even surfaces.

My invention consists of a hollow roller having a spiral conveyer therein, for caus ing the marking dust or material to travel toward one end of the roller which is perforated to permit exit of the marking dust or material.

My invention consists further of a hollow roller closed at both ends and provided with means for charging the roller with the marking dust or material.

It consists further of a hollow roller closed at both ends and having rows of perforations adjacent to one 'end to permit exit of the marking material.

It consists further in certain novel features of construction, arrangement of parts as will be hereinafter fully described and pointed out in the claims, reference being had to the accompanying drawing, in which Figure 1 is a plan view of the complete marking device, Fig. 2 is a vertical longitudinal section of the same, Fig. 3 is a transverse vertical section of the roller, Fig. 4c is an end view showing the pivoted gate for closing the filling orifice, Fig. 5 is a similar View showing the gate opened to expose the interior roller.

In carrying out my invention I use a cylindrical roller A having a solid dished head A at one end and at the other end a segmental dished head A Through the center of the cylinder extends an axle B which is rigid with the heads A and A the ends B B of the same projecting beyond the aforesaid heads A and A Pivotally mounted on the end of the axle B which. projects beyond the segmental head A is the gate C, which is also segmental in shape Specification of Letters Patent.

Application filed. February 9, 1910.

Patented June 7, 191d. Serial No. 542,871.

and of sufiicient area to cover the opening A in that end of the cylinder, the gate being dished and fitting snugly against the head A so that it will remain in place when closed or open. The gate has a suitable knob or handle 0 thereon for manipulating the same.

Within the cylinder and rigidly connected thereto is a continuous spiral rib or fin D extending from the head A toward the closed end A but terminating some distance therefrom. From the point where the spiral rib or fin D terminates to the end A of the cylinder I rovide the cylindrical wall of the roller wlth circumferential rows of perforations a as shown in Figs. 1 and 2.

E is a yoke of rod iron, having eyes e@ which are sprung over the ends BB of the axle B, said yoke being secured in the long handle F as shown in Fig. 1.

To use my invention the powdered lime or other substance which is to be used for marking, is placed .within the cylinder through the end A and the gate, 0 swung over closing the opening A the roller is now placed on the tennis or other court and pushed along by the handle F. The lime will be carried toward the end A by the spiral rib or fin acting as a conveyer until it reaches the circumferential rows of perforations a where it will be discharged on the ground in an even line. Enough marking material may be placed within the cylinder to completely line and mark out .a court at one filling, in fact, the larger the load of material carried, the more smoothly and evenly the cylinder will roll. The opening A in the end of the cylinder will be about one-third of the area of said end so that there will be plenty of space for filling the cylinder and rendering such operation convenient and rapid.

The spiral conveyer rib or fin D feeds all the marking material, to the perforated sec tion of the cylinder, thus obviating all waste.

I claim:

1. A marker for tennis courts and the like consisting of a hollow roller having a circumferentially perforated section adjacent to one end and a spiral conveyer within the cylinder for conveying the marking substance to said perforated section.

2. A marker for tennis courts and the like consisting of a hollow cylinder and headed ends, an opening in one end for charging the cylinder with marking material, a section adjacent to the opposite end of the cylinder having circumferential rows of perforations and a spiral conveyer within the cylinder for conveying the marking material from the filling end to the circumferentially perforated section.

3. A marker for tennis courts and the like consisting of a hollow cylindrical roller adapted to travel on the ground, heads at each end of the roller, one head having a filling opening, a closure therefor, a section of the roller adjacent the opposite head of the roller having circumferential rows of perforations, and a spiral conveyer within the cylinder for carrying the marking material from the filling end to the perforated section, and means for propelling the roller.

4. A marker for tennis courts and the like consisting of a hollow cylindrical roller and heads at each end, one end having an opening for charging the roller with marking material, a gate controlling said open ing, a section of the roller adjacent the 0pposite head having circumferential rows of perforations, and a spiral rib or fin secured to the inner circumference of the roller and extending from the charging end of the roller to the perforated section.

5. A marker for tennis courts and the like consisting of a hollow cylindrical roller, an axle extending therethrough, a handle mounted on the ends of the axle, heads at each end of the roller, one head having an o aenin throu 'h which the c linder may be l a: g l

charged with marking material, a sliding gate controlling said opening, a section of the cylinder adjacent the opposite end of the same having circumferential rows of perforations, and a spiral rib or fin project- .in' from the inner circumference of the cy inder and extending from the charging end of the cylinder to the perforated section.

6. A marker for tennis courts and the like consisting of a hollow cylindrical roller and dished heads, an axle extending through said dished heads and rigid therewith, a handle pivotally mounted on the ends of said axle, an opening through one of said dished heads, a dished gate pivotally mounted on said end and controlling the opening therein, a section of the cylinder adjacent its opposite end having circumferential rows of perforations and a s iral conveyer rib or fin projecting inwar ly from internal circumference of the cylinder and extending from the charging end of the same to the perforated section.

7 A marker for tennis courts and the like, adapted to contain a powdered substance, consisting of a hollow roller having a circumferentially perforated section adjacent to one end, and a spiral rib or fin secured to the inner circumference of the roller to convey the powdered substance to the perforated section.

8. A marker for tennis courts and the like, adapted to contain a powdered sub stance, consisting of a hollow roller having circumferentially disposed perforations adjacent to one end, and a spiral rib or fin secured to the inner circumference of the roller and extending to the aforesaid perforations to convey the powdered substance to said perforations.

9. A marker for tennis courts and the like, adapted to contain a powdered substance, consisting of a hollow roller having adjacent to one end means for charging the roller with the powdered material, and adjacent to the opposite end a circumferentially perforated section, and a spiral rib or fin secured to the inner circumference of the roller from the feeding end to the aforesaid perforated section.

EARL A. ROBINSON. lVitnesses ELMER C. CoLPITTs, G. 7. HURLE Y.