US1347938A - Concrete edging and marking tool - Google Patents

Description

H. F. CONELLY.

CONCRETE EDGING AND MARKING TOOL.

APPLICATION FILED SEPT-16,1919.

0 2 9 1 7 2 y m J d m M P invention consists in the novel construction,

PATENT OFFICE.

HARRY F. CONELLY, OF MACOMB, ILLINOIS.

CONCRETE EDGING AND MARKING TOOL.

Specification of Letters Patent.

Application filed September 16, 1919. Serial No. 324,092.

To all whom it may concern:

Be it known that I, HARRY F. CoNnLLY, a citizen of the United States, residing at Macomb, in the county of McDonough and State of Illinois, have invented certain new and useful Improvements in Concrete Edging and Marking Tools; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to cement finishing tools, and the primary object of the invention is to provide a combined grooving and edging tool and to provide an improvedv means for bringing and holding one of the tools in operative position.

Another object of the invention is to provide an improved cement finishing tool embodying a body having a groover formed on one side thereof, and an edger formedon the other side thereof and a'handle pivotally connected to said body and means for holding the body in position so as to bring either the groover or edger into active operative position.

A further object of the invention is to provide an improved cement finishing tool of the above character, which is durable and eflicient in use, one that is simple and easy to manufacture, and one that can be placed upon the market at a reasonable cost.

With these and other objects in view the arrangement and formation of parts, as will be hereinafter more specifically described, claimed and illustrated in the accompanying drawings forming a part thereof in which:

Figure 1 is a side elevation of the improved tool,

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

Fig. 3 is a fragmentary longitudinal section of the tool,

Fig. 4 is a horizontal section taken on the line 44 of Fig. 3.

Referring to the drawing in detail wherein similar reference characters designate corresponding parts, throughout the several views, the numeral 1 generally indicates the improved cement finishing tool which includes the substantially rectangular shaped body 2 formed of any preferred material, as steel or the like having formed on one edge thereof and projecting outwardly from one face of the plate a rib 3, which constitutes the edges for finishing cement work.

The outer face of the rib 3 as shown extends fiush with the edge of the body and the inner face of the rib is inclined inwardly as at 4 toward the body. The opposite face of the body 2 is provided with a longitudinally extending centrally disposed marking rib 5, which is located intermediate the side edges of the body and extends parallel therewith. The rib 5 constitutes the groover of the finishing tool and the side edges of the rib 5 are inclined towardthe body, as clearly shown in the drawings. One end of the rib 5 is also curved inwardly as at 6, so as to facilitate the insertion of the rib into the cement during the grooving thereof.

A handle 7 isprovided for the tool which includes attaching arms 8 and the hand grip 9, which is provided with a longitudinally extending bore 10. The bore receives the bolt 11, which extends through the hand grip and through the upper ends of the arms 8.

As clearly shownin the drawings the arms 8 are substantially triangular in configuration and have their lower spaced portion en aging the side edges of the body 2 and each of the arms carry inwardly extending relatively long pivot pins 12 which are adapted to be rotatablyreceived in apertures 13 formed in the central portion of the side edges of the body.

To hold the hand grip 9 and the armsS against movement in relation to the body when one face of the same is in operative position, one of the arms 8 is provided with inwardly extending relatively short lugs 14 located on opposite sides of the central pivot pin 12. The bore 10 of the hand grip 9 is enlarged adjacent the end thereof which carries the arm having the outstanding lugs 14 and the enlarged portion of the bore has seated therein the expansion spring 15 which is coiled around the bolt 11.

The coil spring 15 normally urges the arm 8 carrying the lugs 14 outwardly so as to throw the lugs out of engagement with the apertures 13.

The end of the bolt 10 has threaded thereon the thumb nut 17 which forms means for holding the arms in position against the tension of the coil spring 15.

In operation of the improved device, when it is desired to bring one face of the tool in Patented July 27, 1920.

operative position the thumb 17 is loosened, which will permit the arm 8 to be urged outwardly by the spring 15, and when the lugs 17 have ridden out of engagement with the apertures formed on opposite sides of the central aperture 12, the body is then grasped by the hand and rotated on the pins 12 until the opposite faces come into position. The thumb nut is again tightened, which brings back the arm 'to its normal position and forces the lugs into the recesses and thus effectively holds the body against accidental movement in relation to the handle or grip.

The hand grip 9 is held against movement in relation to the arms 8 by means of the conditions concurrent with the adoption of m device will necessaril 'var I desire to emphasize that various minor changes in details of construction, proportion and arrangement of parts may be resorted to, when required without sacrificing any of the advantages of my invention as set forth.

What I claim asnew is: 1. A cement finishing tool comprising a substantially rectangular shaped body, up-

ward extending arms, inwardly extending pivot pins, carried by the arms, the inner edges of said body having openings for rotatably receiving the pivot pins, one of said arms having inwardly extending lugs positioned on theopposite sides of the pivot pin and arranged to fit into recesses formed 111 the edge of the body, a hand grip interposed between the upper ends of the arms, a bolt extending through the handle and arms 3, a spring coiled around said bolt and arranged to engage one of said arms to normally urge the same outwardly, and'a thumb nut turned on said bolt and arranged to hold the arm inwardly against the tension of said spring, as and for the purpose specified.

2. A cement finishing tool comprising a body, parallel arms for supporting said body, means for pivotally mounting said body between one end of said arms, a hand grip mounted between the opposite ends of said arms, a securing member extended through said hand grip and said arms to connect the same, means carried by said securing member for drawing said arms into engagement with said hand grip, means for forcing outwardly one of said arms,and means carried by the last mentioned arm for locking said body in 'one position between said arms, said body carrying cement finishing members adapted to be brought into operative position by rotation of said body within said arms.

3. A cement finishing tool comprising a pair of arms, a body mounted in said arms and carrying cement finishing tools on its faces, a hand grip spacing apart said arms, means for connecting said hand grip and said arms, means carried by one of said arms for engagement with said body to retain the latter in one position within said arms,

means carried by the connecting means for sald hand grip and said arms to retain said arms 1n r gid posltlon, and means for forc- 7 ing apart said arms when released.

In testimony whereof I afiix my signature in' presence of two witnesses.

HARRY F. CONELLY.

Witnesses: Y

T. ERNEs'r Swrrznn, FRANK LOGAN.

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